diff --git a/include/bike.h b/include/bike.h
index 893b0b19e..afe773d42 100644
--- a/include/bike.h
+++ b/include/bike.h
@@ -17,11 +17,11 @@ struct BikeHistoryInputInfo
 // Player speeds
 enum
 {
-    SPEED_STANDING,
-    SPEED_NORMAL,
-    SPEED_FAST,
-    SPEED_FASTER,
-    SPEED_FASTEST,
+    BIKE_SPEED_STANDING,
+    BIKE_SPEED_NORMAL,
+    BIKE_SPEED_FAST,
+    BIKE_SPEED_FASTER,
+    BIKE_SPEED_FASTEST,
 };
 
 // mach bike transitions enum
diff --git a/include/constants/event_object_movement.h b/include/constants/event_object_movement.h
index 4ffb869e4..e7238b56e 100755
--- a/include/constants/event_object_movement.h
+++ b/include/constants/event_object_movement.h
@@ -128,10 +128,10 @@
 #define MOVEMENT_ACTION_RIDE_WATER_CURRENT_UP           0x2A
 #define MOVEMENT_ACTION_RIDE_WATER_CURRENT_LEFT         0x2B
 #define MOVEMENT_ACTION_RIDE_WATER_CURRENT_RIGHT        0x2C
-#define MOVEMENT_ACTION_WALK_FASTEST_DOWN               0x2D
-#define MOVEMENT_ACTION_WALK_FASTEST_UP                 0x2E
-#define MOVEMENT_ACTION_WALK_FASTEST_LEFT               0x2F
-#define MOVEMENT_ACTION_WALK_FASTEST_RIGHT              0x30
+#define MOVEMENT_ACTION_WALK_FASTER_DOWN                0x2D
+#define MOVEMENT_ACTION_WALK_FASTER_UP                  0x2E
+#define MOVEMENT_ACTION_WALK_FASTER_LEFT                0x2F
+#define MOVEMENT_ACTION_WALK_FASTER_RIGHT               0x30
 #define MOVEMENT_ACTION_SLIDE_DOWN                      0x31
 #define MOVEMENT_ACTION_SLIDE_UP                        0x32
 #define MOVEMENT_ACTION_SLIDE_LEFT                      0x33
diff --git a/include/event_object_movement.h b/include/event_object_movement.h
index a935502e6..11dac813d 100644
--- a/include/event_object_movement.h
+++ b/include/event_object_movement.h
@@ -136,7 +136,7 @@ u8 GetFaceDirectionMovementAction(u32);
 u8 GetWalkNormalMovementAction(u32);
 u8 GetWalkFastMovementAction(u32);
 u8 GetRideWaterCurrentMovementAction(u32);
-u8 GetWalkFastestMovementAction(u32);
+u8 GetWalkFasterMovementAction(u32);
 u8 GetPlayerRunMovementAction(u32);
 u8 GetJumpInPlaceMovementAction(u32);
 u8 GetAcroWheelieFaceDirectionMovementAction(u32);
diff --git a/include/field_player_avatar.h b/include/field_player_avatar.h
index e9174d589..823564f22 100644
--- a/include/field_player_avatar.h
+++ b/include/field_player_avatar.h
@@ -11,10 +11,10 @@ void PlayerGetDestCoords(s16 *, s16 *);
 u8 GetPlayerFacingDirection(void);
 u8 GetPlayerMovementDirection(void);
 u8 PlayerGetCopyableMovement(void);
-void PlayerGoSpeed1(u8);
-void PlayerGoSpeed2(u8);
+void PlayerWalkNormal(u8);
+void PlayerWalkFast(u8);
 void PlayerRideWaterCurrent(u8);
-void PlayerGoSpeed4(u8);
+void PlayerWalkFaster(u8);
 void PlayerOnBikeCollide(u8);
 void PlayerFaceDirection(u8 a);
 void PlayerTurnInPlace(u8 a);
diff --git a/src/bike.c b/src/bike.c
index 39433522e..fd794a3c7 100644
--- a/src/bike.c
+++ b/src/bike.c
@@ -71,12 +71,12 @@ static void (*const sMachBikeTransitions[])(u8) =
     MachBikeTransition_TrySlowDown,
 };
 
-// bikeFrameCounter is input which is represented by sMachBikeSpeeds in order: 0 is normal speed (1 speed), 1 is fast speed (2 speed), 2 is fastest speed (4 speed)
+// bikeFrameCounter is input which is represented by sMachBikeSpeeds in order
 static void (*const sMachBikeSpeedCallbacks[])(u8) =
 {
-    PlayerGoSpeed1, // normal speed (1 speed)
-    PlayerGoSpeed2, // fast speed (2 speed)
-    PlayerGoSpeed4, // fastest speed (4 speed)
+    PlayerWalkNormal,
+    PlayerWalkFast,
+    PlayerWalkFaster,
 };
 
 static void (*const sAcroBikeTransitions[])(u8) =
@@ -108,7 +108,7 @@ static u8 (*const sAcroBikeInputHandlers[])(u8 *, u16, u16) =
 };
 
 // used with bikeFrameCounter from mach bike
-static const u16 sMachBikeSpeeds[] = {SPEED_NORMAL, SPEED_FAST, SPEED_FASTEST};
+static const u16 sMachBikeSpeeds[] = {BIKE_SPEED_NORMAL, BIKE_SPEED_FAST, BIKE_SPEED_FASTEST};
 
 // this is a list of timers to compare against later, terminated with 0. the only timer being compared against is 4 frames in this list.
 static const u8 sAcroBikeJumpTimerList[] = {4, 0};
@@ -147,7 +147,7 @@ static u8 GetMachBikeTransition(u8 *dirTraveling)
     if (*dirTraveling == 0)
     {
         *dirTraveling = direction; // update the direction, since below we either faced a direction or we started moving.
-        if (gPlayerAvatar.bikeSpeed == SPEED_STANDING)
+        if (gPlayerAvatar.bikeSpeed == BIKE_SPEED_STANDING)
         {
             gPlayerAvatar.runningState = NOT_MOVING;
             return MACH_TRANS_FACE_DIRECTION;
@@ -159,7 +159,7 @@ static u8 GetMachBikeTransition(u8 *dirTraveling)
     // we need to check if the last traveled direction changed from the new direction as well as ensuring that we dont update the state while the player is moving: see the else check.
     if (*dirTraveling != direction && gPlayerAvatar.runningState != MOVING)
     {
-        if (gPlayerAvatar.bikeSpeed != SPEED_STANDING)
+        if (gPlayerAvatar.bikeSpeed != BIKE_SPEED_STANDING)
         {
             *dirTraveling = direction; // implement the new direction
             gPlayerAvatar.runningState = MOVING;
@@ -246,7 +246,7 @@ static void MachBikeTransition_TrySlowDown(u8 direction)
 {
     u8 collision;
 
-    if (gPlayerAvatar.bikeSpeed != SPEED_STANDING)
+    if (gPlayerAvatar.bikeSpeed != BIKE_SPEED_STANDING)
         gPlayerAvatar.bikeFrameCounter = --gPlayerAvatar.bikeSpeed;
 
     collision = GetBikeCollision(direction);
@@ -306,7 +306,7 @@ static u8 AcroBikeHandleInputNormal(u8 *newDirection, u16 newKeys, u16 heldKeys)
             return ACRO_TRANS_FACE_DIRECTION;
         }
     }
-    if (*newDirection == direction && (heldKeys & B_BUTTON) && gPlayerAvatar.bikeSpeed == SPEED_STANDING)
+    if (*newDirection == direction && (heldKeys & B_BUTTON) && gPlayerAvatar.bikeSpeed == BIKE_SPEED_STANDING)
     {
         gPlayerAvatar.bikeSpeed++;
         gPlayerAvatar.acroBikeState = ACRO_STATE_WHEELIE_MOVING;
@@ -342,7 +342,7 @@ static u8 AcroBikeHandleInputTurning(u8 *newDirection, u16 newKeys, u16 heldKeys
     if (*newDirection == AcroBike_GetJumpDirection())
     {
         Bike_SetBikeStill(); // Bike_SetBikeStill sets speed to standing, but the next line immediately overrides it. could have just reset acroBikeState to 0 here instead of wasting a jump.
-        gPlayerAvatar.bikeSpeed = SPEED_NORMAL;
+        gPlayerAvatar.bikeSpeed = BIKE_SPEED_NORMAL;
         if (*newDirection == GetOppositeDirection(direction))
         {
             // do a turn jump.
@@ -775,7 +775,7 @@ static void AcroBike_TryHistoryUpdate(u16 newKeys, u16 heldKeys) // newKeys is u
     else
     {
         Bike_UpdateDirTimerHistory(direction);
-        gPlayerAvatar.bikeSpeed = SPEED_STANDING;
+        gPlayerAvatar.bikeSpeed = BIKE_SPEED_STANDING;
     }
 
     direction = heldKeys & (A_BUTTON | B_BUTTON | SELECT_BUTTON | START_BUTTON); // directions is reused for some reason.
@@ -787,7 +787,7 @@ static void AcroBike_TryHistoryUpdate(u16 newKeys, u16 heldKeys) // newKeys is u
     else
     {
         Bike_UpdateABStartSelectHistory(direction);
-        gPlayerAvatar.bikeSpeed = SPEED_STANDING;
+        gPlayerAvatar.bikeSpeed = BIKE_SPEED_STANDING;
     }
 }
 
@@ -994,7 +994,7 @@ void BikeClearState(int newDirHistory, int newAbStartHistory)
     gPlayerAvatar.acroBikeState = ACRO_STATE_NORMAL;
     gPlayerAvatar.newDirBackup = DIR_NONE;
     gPlayerAvatar.bikeFrameCounter = 0;
-    gPlayerAvatar.bikeSpeed = SPEED_STANDING;
+    gPlayerAvatar.bikeSpeed = BIKE_SPEED_STANDING;
     gPlayerAvatar.directionHistory = newDirHistory;
     gPlayerAvatar.abStartSelectHistory = newAbStartHistory;
 
@@ -1014,7 +1014,7 @@ void Bike_UpdateBikeCounterSpeed(u8 counter)
 static void Bike_SetBikeStill(void)
 {
     gPlayerAvatar.bikeFrameCounter = 0;
-    gPlayerAvatar.bikeSpeed = SPEED_STANDING;
+    gPlayerAvatar.bikeSpeed = BIKE_SPEED_STANDING;
 }
 
 s16 GetPlayerSpeed(void)
@@ -1027,11 +1027,11 @@ s16 GetPlayerSpeed(void)
     if (gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_MACH_BIKE)
         return machSpeeds[gPlayerAvatar.bikeFrameCounter];
     else if (gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_ACRO_BIKE)
-        return SPEED_FASTER;
+        return BIKE_SPEED_FASTER;
     else if (gPlayerAvatar.flags & (PLAYER_AVATAR_FLAG_SURFING | PLAYER_AVATAR_FLAG_DASH))
-        return SPEED_FAST;
+        return BIKE_SPEED_FAST;
     else
-        return SPEED_NORMAL;
+        return BIKE_SPEED_NORMAL;
 }
 
 void Bike_HandleBumpySlopeJump(void)
diff --git a/src/data/object_events/movement_action_func_tables.h b/src/data/object_events/movement_action_func_tables.h
index 4df07be0d..aa55c31ef 100755
--- a/src/data/object_events/movement_action_func_tables.h
+++ b/src/data/object_events/movement_action_func_tables.h
@@ -85,14 +85,14 @@ u8 MovementAction_RideWaterCurrentLeft_Step0(struct ObjectEvent *, struct Sprite
 u8 MovementAction_RideWaterCurrentLeft_Step1(struct ObjectEvent *, struct Sprite *);
 u8 MovementAction_RideWaterCurrentRight_Step0(struct ObjectEvent *, struct Sprite *);
 u8 MovementAction_RideWaterCurrentRight_Step1(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestDown_Step0(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestDown_Step1(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestUp_Step0(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestUp_Step1(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestLeft_Step0(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestLeft_Step1(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestRight_Step0(struct ObjectEvent *, struct Sprite *);
-u8 MovementAction_WalkFastestRight_Step1(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterDown_Step0(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterDown_Step1(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterUp_Step0(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterUp_Step1(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterLeft_Step0(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterLeft_Step1(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterRight_Step0(struct ObjectEvent *, struct Sprite *);
+u8 MovementAction_WalkFasterRight_Step1(struct ObjectEvent *, struct Sprite *);
 u8 MovementAction_SlideDown_Step0(struct ObjectEvent *, struct Sprite *);
 u8 MovementAction_SlideDown_Step1(struct ObjectEvent *, struct Sprite *);
 u8 MovementAction_SlideUp_Step0(struct ObjectEvent *, struct Sprite *);
@@ -307,10 +307,10 @@ u8 (*const gMovementActionFuncs_RideWaterCurrentDown[])(struct ObjectEvent *, st
 u8 (*const gMovementActionFuncs_RideWaterCurrentUp[])(struct ObjectEvent *, struct Sprite *);
 u8 (*const gMovementActionFuncs_RideWaterCurrentLeft[])(struct ObjectEvent *, struct Sprite *);
 u8 (*const gMovementActionFuncs_RideWaterCurrentRight[])(struct ObjectEvent *, struct Sprite *);
-u8 (*const gMovementActionFuncs_WalkFastestDown[])(struct ObjectEvent *, struct Sprite *);
-u8 (*const gMovementActionFuncs_WalkFastestUp[])(struct ObjectEvent *, struct Sprite *);
-u8 (*const gMovementActionFuncs_WalkFastestLeft[])(struct ObjectEvent *, struct Sprite *);
-u8 (*const gMovementActionFuncs_WalkFastestRight[])(struct ObjectEvent *, struct Sprite *);
+u8 (*const gMovementActionFuncs_WalkFasterDown[])(struct ObjectEvent *, struct Sprite *);
+u8 (*const gMovementActionFuncs_WalkFasterUp[])(struct ObjectEvent *, struct Sprite *);
+u8 (*const gMovementActionFuncs_WalkFasterLeft[])(struct ObjectEvent *, struct Sprite *);
+u8 (*const gMovementActionFuncs_WalkFasterRight[])(struct ObjectEvent *, struct Sprite *);
 u8 (*const gMovementActionFuncs_SlideDown[])(struct ObjectEvent *, struct Sprite *);
 u8 (*const gMovementActionFuncs_SlideUp[])(struct ObjectEvent *, struct Sprite *);
 u8 (*const gMovementActionFuncs_SlideLeft[])(struct ObjectEvent *, struct Sprite *);
@@ -467,10 +467,10 @@ u8 (*const *const gMovementActionFuncs[])(struct ObjectEvent *, struct Sprite *)
     [MOVEMENT_ACTION_RIDE_WATER_CURRENT_UP] = gMovementActionFuncs_RideWaterCurrentUp,
     [MOVEMENT_ACTION_RIDE_WATER_CURRENT_LEFT] = gMovementActionFuncs_RideWaterCurrentLeft,
     [MOVEMENT_ACTION_RIDE_WATER_CURRENT_RIGHT] = gMovementActionFuncs_RideWaterCurrentRight,
-    [MOVEMENT_ACTION_WALK_FASTEST_DOWN] = gMovementActionFuncs_WalkFastestDown,
-    [MOVEMENT_ACTION_WALK_FASTEST_UP] = gMovementActionFuncs_WalkFastestUp,
-    [MOVEMENT_ACTION_WALK_FASTEST_LEFT] = gMovementActionFuncs_WalkFastestLeft,
-    [MOVEMENT_ACTION_WALK_FASTEST_RIGHT] = gMovementActionFuncs_WalkFastestRight,
+    [MOVEMENT_ACTION_WALK_FASTER_DOWN] = gMovementActionFuncs_WalkFasterDown,
+    [MOVEMENT_ACTION_WALK_FASTER_UP] = gMovementActionFuncs_WalkFasterUp,
+    [MOVEMENT_ACTION_WALK_FASTER_LEFT] = gMovementActionFuncs_WalkFasterLeft,
+    [MOVEMENT_ACTION_WALK_FASTER_RIGHT] = gMovementActionFuncs_WalkFasterRight,
     [MOVEMENT_ACTION_SLIDE_DOWN] = gMovementActionFuncs_SlideDown,
     [MOVEMENT_ACTION_SLIDE_UP] = gMovementActionFuncs_SlideUp,
     [MOVEMENT_ACTION_SLIDE_LEFT] = gMovementActionFuncs_SlideLeft,
@@ -603,11 +603,11 @@ u8 (*const gMovementActionFuncs_FaceRight[])(struct ObjectEvent *, struct Sprite
 };
 
 static u8 (*const sDirectionAnimFuncsBySpeed[])(u8) = {
-    GetMoveDirectionAnimNum,
-    GetMoveDirectionFastAnimNum,
-    GetMoveDirectionFastAnimNum,
-    GetMoveDirectionFasterAnimNum,
-    GetMoveDirectionFastestAnimNum,
+    [MOVE_SPEED_NORMAL] = GetMoveDirectionAnimNum,
+    [MOVE_SPEED_FAST_1] = GetMoveDirectionFastAnimNum,
+    [MOVE_SPEED_FAST_2] = GetMoveDirectionFastAnimNum,
+    [MOVE_SPEED_FASTER] = GetMoveDirectionFasterAnimNum,
+    [MOVE_SPEED_FASTEST] = GetMoveDirectionFastestAnimNum,
 };
 
 u8 (*const gMovementActionFuncs_WalkSlowDiagonalUpLeft[])(struct ObjectEvent *, struct Sprite *) = {
@@ -907,27 +907,27 @@ u8 (*const gMovementActionFuncs_RideWaterCurrentRight[])(struct ObjectEvent *, s
     MovementAction_PauseSpriteAnim,
 };
 
-u8 (*const gMovementActionFuncs_WalkFastestDown[])(struct ObjectEvent *, struct Sprite *) = {
-    MovementAction_WalkFastestDown_Step0,
-    MovementAction_WalkFastestDown_Step1,
+u8 (*const gMovementActionFuncs_WalkFasterDown[])(struct ObjectEvent *, struct Sprite *) = {
+    MovementAction_WalkFasterDown_Step0,
+    MovementAction_WalkFasterDown_Step1,
     MovementAction_PauseSpriteAnim,
 };
 
-u8 (*const gMovementActionFuncs_WalkFastestUp[])(struct ObjectEvent *, struct Sprite *) = {
-    MovementAction_WalkFastestUp_Step0,
-    MovementAction_WalkFastestUp_Step1,
+u8 (*const gMovementActionFuncs_WalkFasterUp[])(struct ObjectEvent *, struct Sprite *) = {
+    MovementAction_WalkFasterUp_Step0,
+    MovementAction_WalkFasterUp_Step1,
     MovementAction_PauseSpriteAnim,
 };
 
-u8 (*const gMovementActionFuncs_WalkFastestLeft[])(struct ObjectEvent *, struct Sprite *) = {
-    MovementAction_WalkFastestLeft_Step0,
-    MovementAction_WalkFastestLeft_Step1,
+u8 (*const gMovementActionFuncs_WalkFasterLeft[])(struct ObjectEvent *, struct Sprite *) = {
+    MovementAction_WalkFasterLeft_Step0,
+    MovementAction_WalkFasterLeft_Step1,
     MovementAction_PauseSpriteAnim,
 };
 
-u8 (*const gMovementActionFuncs_WalkFastestRight[])(struct ObjectEvent *, struct Sprite *) = {
-    MovementAction_WalkFastestRight_Step0,
-    MovementAction_WalkFastestRight_Step1,
+u8 (*const gMovementActionFuncs_WalkFasterRight[])(struct ObjectEvent *, struct Sprite *) = {
+    MovementAction_WalkFasterRight_Step0,
+    MovementAction_WalkFasterRight_Step1,
     MovementAction_PauseSpriteAnim,
 };
 
diff --git a/src/event_object_movement.c b/src/event_object_movement.c
index 074fa2386..1bb4991ab 100644
--- a/src/event_object_movement.c
+++ b/src/event_object_movement.c
@@ -32,6 +32,14 @@
 
 // this file was known as evobjmv.c in Game Freak's original source
 
+enum {
+    MOVE_SPEED_NORMAL, // walking
+    MOVE_SPEED_FAST_1, // running / surfing / sliding (ice tile)
+    MOVE_SPEED_FAST_2, // water current / acro bike
+    MOVE_SPEED_FASTER, // mach bike's max speed
+    MOVE_SPEED_FASTEST,
+};
+
 // Sprite data used throughout
 #define sObjEventId   data[0]
 #define sTypeFuncId   data[1] // Index into corresponding gMovementTypeFuncs_* table
@@ -941,12 +949,12 @@ const u8 gRideWaterCurrentMovementActions[] = {
     MOVEMENT_ACTION_RIDE_WATER_CURRENT_LEFT,
     MOVEMENT_ACTION_RIDE_WATER_CURRENT_RIGHT,
 };
-const u8 gWalkFastestMovementActions[] = {
-    MOVEMENT_ACTION_WALK_FASTEST_DOWN,
-    MOVEMENT_ACTION_WALK_FASTEST_DOWN,
-    MOVEMENT_ACTION_WALK_FASTEST_UP,
-    MOVEMENT_ACTION_WALK_FASTEST_LEFT,
-    MOVEMENT_ACTION_WALK_FASTEST_RIGHT,
+const u8 gWalkFasterMovementActions[] = {
+    MOVEMENT_ACTION_WALK_FASTER_DOWN,
+    MOVEMENT_ACTION_WALK_FASTER_DOWN,
+    MOVEMENT_ACTION_WALK_FASTER_UP,
+    MOVEMENT_ACTION_WALK_FASTER_LEFT,
+    MOVEMENT_ACTION_WALK_FASTER_RIGHT,
 };
 const u8 gSlideMovementActions[] = {
     MOVEMENT_ACTION_SLIDE_DOWN,
@@ -4314,7 +4322,7 @@ bool8 CopyablePlayerMovement_GoSpeed2(struct ObjectEvent *objectEvent, struct Sp
     direction = playerDirection;
     direction = state_to_direction(gInitialMovementTypeFacingDirections[objectEvent->movementType], objectEvent->directionSequenceIndex, direction);
     ObjectEventMoveDestCoords(objectEvent, direction, &x, &y);
-    ObjectEventSetSingleMovement(objectEvent, sprite, GetWalkFastestMovementAction(direction));
+    ObjectEventSetSingleMovement(objectEvent, sprite, GetWalkFasterMovementAction(direction));
     if (GetCollisionAtCoords(objectEvent, x, y, direction) || (tileCallback != NULL && !tileCallback(MapGridGetMetatileBehaviorAt(x, y))))
     {
         ObjectEventSetSingleMovement(objectEvent, sprite, GetFaceDirectionMovementAction(direction));
@@ -5025,7 +5033,7 @@ dirn_to_anim(GetWalkSlowMovementAction, gWalkSlowMovementActions);
 dirn_to_anim(GetWalkNormalMovementAction, gWalkNormalMovementActions);
 dirn_to_anim(GetWalkFastMovementAction, gWalkFastMovementActions);
 dirn_to_anim(GetRideWaterCurrentMovementAction, gRideWaterCurrentMovementActions);
-dirn_to_anim(GetWalkFastestMovementAction, gWalkFastestMovementActions);
+dirn_to_anim(GetWalkFasterMovementAction, gWalkFasterMovementActions);
 dirn_to_anim(GetSlideMovementAction, gSlideMovementActions);
 dirn_to_anim(GetPlayerRunMovementAction, gPlayerRunMovementActions);
 dirn_to_anim(GetJump2MovementAction, gJump2MovementActions);
@@ -5356,7 +5364,7 @@ bool8 MovementAction_WalkSlowRight_Step1(struct ObjectEvent *objectEvent, struct
 
 bool8 MovementAction_WalkNormalDiagonalUpLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTHWEST, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTHWEST, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalDiagonalUpLeft_Step1(objectEvent, sprite);
 }
 
@@ -5372,7 +5380,7 @@ bool8 MovementAction_WalkNormalDiagonalUpLeft_Step1(struct ObjectEvent *objectEv
 
 bool8 MovementAction_WalkNormalDiagonalUpRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTHEAST, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTHEAST, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalDiagonalUpRight_Step1(objectEvent, sprite);
 }
 
@@ -5388,7 +5396,7 @@ bool8 MovementAction_WalkNormalDiagonalUpRight_Step1(struct ObjectEvent *objectE
 
 bool8 MovementAction_WalkNormalDiagonalDownLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTHWEST, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTHWEST, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalDiagonalDownLeft_Step1(objectEvent, sprite);
 }
 
@@ -5404,7 +5412,7 @@ bool8 MovementAction_WalkNormalDiagonalDownLeft_Step1(struct ObjectEvent *object
 
 bool8 MovementAction_WalkNormalDiagonalDownRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTHEAST, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTHEAST, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalDiagonalDownRight_Step1(objectEvent, sprite);
 }
 
@@ -5420,7 +5428,7 @@ bool8 MovementAction_WalkNormalDiagonalDownRight_Step1(struct ObjectEvent *objec
 
 bool8 MovementAction_WalkNormalDown_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalDown_Step1(objectEvent, sprite);
 }
 
@@ -5436,7 +5444,7 @@ bool8 MovementAction_WalkNormalDown_Step1(struct ObjectEvent *objectEvent, struc
 
 bool8 MovementAction_WalkNormalUp_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTH, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTH, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalUp_Step1(objectEvent, sprite);
 }
 
@@ -5452,7 +5460,7 @@ bool8 MovementAction_WalkNormalUp_Step1(struct ObjectEvent *objectEvent, struct
 
 bool8 MovementAction_WalkNormalLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_WEST, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_WEST, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalLeft_Step1(objectEvent, sprite);
 }
 
@@ -5468,7 +5476,7 @@ bool8 MovementAction_WalkNormalLeft_Step1(struct ObjectEvent *objectEvent, struc
 
 bool8 MovementAction_WalkNormalRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_EAST, 0);
+    InitMovementNormal(objectEvent, sprite, DIR_EAST, MOVE_SPEED_NORMAL);
     return MovementAction_WalkNormalRight_Step1(objectEvent, sprite);
 }
 
@@ -5701,7 +5709,7 @@ bool8 MovementAction_Delay16_Step0(struct ObjectEvent *objectEvent, struct Sprit
 
 bool8 MovementAction_WalkFastDown_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, 1);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, MOVE_SPEED_FAST_1);
     return MovementAction_WalkFastDown_Step1(objectEvent, sprite);
 }
 
@@ -5717,7 +5725,7 @@ bool8 MovementAction_WalkFastDown_Step1(struct ObjectEvent *objectEvent, struct
 
 bool8 MovementAction_WalkFastUp_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTH, 1);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTH, MOVE_SPEED_FAST_1);
     return MovementAction_WalkFastUp_Step1(objectEvent, sprite);
 }
 
@@ -5733,7 +5741,7 @@ bool8 MovementAction_WalkFastUp_Step1(struct ObjectEvent *objectEvent, struct Sp
 
 bool8 MovementAction_WalkFastLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_WEST, 1);
+    InitMovementNormal(objectEvent, sprite, DIR_WEST, MOVE_SPEED_FAST_1);
     return MovementAction_WalkFastLeft_Step1(objectEvent, sprite);
 }
 
@@ -5749,7 +5757,7 @@ bool8 MovementAction_WalkFastLeft_Step1(struct ObjectEvent *objectEvent, struct
 
 bool8 MovementAction_WalkFastRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_EAST, 1);
+    InitMovementNormal(objectEvent, sprite, DIR_EAST, MOVE_SPEED_FAST_1);
     return MovementAction_WalkFastRight_Step1(objectEvent, sprite);
 }
 
@@ -5891,7 +5899,7 @@ bool8 MovementAction_WalkInPlaceFastestRight_Step0(struct ObjectEvent *objectEve
 
 bool8 MovementAction_RideWaterCurrentDown_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, 2);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, MOVE_SPEED_FAST_2);
     return MovementAction_RideWaterCurrentDown_Step1(objectEvent, sprite);
 }
 
@@ -5907,7 +5915,7 @@ bool8 MovementAction_RideWaterCurrentDown_Step1(struct ObjectEvent *objectEvent,
 
 bool8 MovementAction_RideWaterCurrentUp_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTH, 2);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTH, MOVE_SPEED_FAST_2);
     return MovementAction_RideWaterCurrentUp_Step1(objectEvent, sprite);
 }
 
@@ -5923,7 +5931,7 @@ bool8 MovementAction_RideWaterCurrentUp_Step1(struct ObjectEvent *objectEvent, s
 
 bool8 MovementAction_RideWaterCurrentLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_WEST, 2);
+    InitMovementNormal(objectEvent, sprite, DIR_WEST, MOVE_SPEED_FAST_2);
     return MovementAction_RideWaterCurrentLeft_Step1(objectEvent, sprite);
 }
 
@@ -5939,7 +5947,7 @@ bool8 MovementAction_RideWaterCurrentLeft_Step1(struct ObjectEvent *objectEvent,
 
 bool8 MovementAction_RideWaterCurrentRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_EAST, 2);
+    InitMovementNormal(objectEvent, sprite, DIR_EAST, MOVE_SPEED_FAST_2);
     return MovementAction_RideWaterCurrentRight_Step1(objectEvent, sprite);
 }
 
@@ -5953,13 +5961,13 @@ bool8 MovementAction_RideWaterCurrentRight_Step1(struct ObjectEvent *objectEvent
     return FALSE;
 }
 
-bool8 MovementAction_WalkFastestDown_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterDown_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, 3);
-    return MovementAction_WalkFastestDown_Step1(objectEvent, sprite);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, MOVE_SPEED_FASTER);
+    return MovementAction_WalkFasterDown_Step1(objectEvent, sprite);
 }
 
-bool8 MovementAction_WalkFastestDown_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterDown_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
     if (UpdateMovementNormal(objectEvent, sprite))
     {
@@ -5969,13 +5977,13 @@ bool8 MovementAction_WalkFastestDown_Step1(struct ObjectEvent *objectEvent, stru
     return FALSE;
 }
 
-bool8 MovementAction_WalkFastestUp_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterUp_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTH, 3);
-    return MovementAction_WalkFastestUp_Step1(objectEvent, sprite);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTH, MOVE_SPEED_FASTER);
+    return MovementAction_WalkFasterUp_Step1(objectEvent, sprite);
 }
 
-bool8 MovementAction_WalkFastestUp_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterUp_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
     if (UpdateMovementNormal(objectEvent, sprite))
     {
@@ -5985,13 +5993,13 @@ bool8 MovementAction_WalkFastestUp_Step1(struct ObjectEvent *objectEvent, struct
     return FALSE;
 }
 
-bool8 MovementAction_WalkFastestLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_WEST, 3);
-    return MovementAction_WalkFastestLeft_Step1(objectEvent, sprite);
+    InitMovementNormal(objectEvent, sprite, DIR_WEST, MOVE_SPEED_FASTER);
+    return MovementAction_WalkFasterLeft_Step1(objectEvent, sprite);
 }
 
-bool8 MovementAction_WalkFastestLeft_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterLeft_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
     if (UpdateMovementNormal(objectEvent, sprite))
     {
@@ -6001,13 +6009,13 @@ bool8 MovementAction_WalkFastestLeft_Step1(struct ObjectEvent *objectEvent, stru
     return FALSE;
 }
 
-bool8 MovementAction_WalkFastestRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_EAST, 3);
-    return MovementAction_WalkFastestRight_Step1(objectEvent, sprite);
+    InitMovementNormal(objectEvent, sprite, DIR_EAST, MOVE_SPEED_FASTER);
+    return MovementAction_WalkFasterRight_Step1(objectEvent, sprite);
 }
 
-bool8 MovementAction_WalkFastestRight_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
+bool8 MovementAction_WalkFasterRight_Step1(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
     if (UpdateMovementNormal(objectEvent, sprite))
     {
@@ -6019,7 +6027,7 @@ bool8 MovementAction_WalkFastestRight_Step1(struct ObjectEvent *objectEvent, str
 
 bool8 MovementAction_SlideDown_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, 4);
+    InitMovementNormal(objectEvent, sprite, DIR_SOUTH, MOVE_SPEED_FASTEST);
     return MovementAction_SlideDown_Step1(objectEvent, sprite);
 }
 
@@ -6035,7 +6043,7 @@ bool8 MovementAction_SlideDown_Step1(struct ObjectEvent *objectEvent, struct Spr
 
 bool8 MovementAction_SlideUp_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_NORTH, 4);
+    InitMovementNormal(objectEvent, sprite, DIR_NORTH, MOVE_SPEED_FASTEST);
     return MovementAction_SlideUp_Step1(objectEvent, sprite);
 }
 
@@ -6051,7 +6059,7 @@ bool8 MovementAction_SlideUp_Step1(struct ObjectEvent *objectEvent, struct Sprit
 
 bool8 MovementAction_SlideLeft_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_WEST, 4);
+    InitMovementNormal(objectEvent, sprite, DIR_WEST, MOVE_SPEED_FASTEST);
     return MovementAction_SlideLeft_Step1(objectEvent, sprite);
 }
 
@@ -6067,7 +6075,7 @@ bool8 MovementAction_SlideLeft_Step1(struct ObjectEvent *objectEvent, struct Spr
 
 bool8 MovementAction_SlideRight_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_EAST, 4);
+    InitMovementNormal(objectEvent, sprite, DIR_EAST, MOVE_SPEED_FASTEST);
     return MovementAction_SlideRight_Step1(objectEvent, sprite);
 }
 
@@ -6728,7 +6736,7 @@ bool8 MovementAction_WalkDownAffine_Step1(struct ObjectEvent *objectEvent, struc
 
 bool8 MovementAction_WalkLeftAffine_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_WEST, 1);
+    InitMovementNormal(objectEvent, sprite, DIR_WEST, MOVE_SPEED_FAST_1);
     sprite->affineAnimPaused = FALSE;
     ChangeSpriteAffineAnimIfDifferent(sprite, 2);
     return MovementAction_WalkLeftAffine_Step1(objectEvent, sprite);
@@ -6747,7 +6755,7 @@ bool8 MovementAction_WalkLeftAffine_Step1(struct ObjectEvent *objectEvent, struc
 
 bool8 MovementAction_WalkRightAffine_Step0(struct ObjectEvent *objectEvent, struct Sprite *sprite)
 {
-    InitMovementNormal(objectEvent, sprite, DIR_EAST, 1);
+    InitMovementNormal(objectEvent, sprite, DIR_EAST, MOVE_SPEED_FAST_1);
     sprite->affineAnimPaused = FALSE;
     ChangeSpriteAffineAnimIfDifferent(sprite, 3);
     return MovementAction_WalkRightAffine_Step1(objectEvent, sprite);
diff --git a/src/field_player_avatar.c b/src/field_player_avatar.c
index 6ce304c2c..00800636d 100644
--- a/src/field_player_avatar.c
+++ b/src/field_player_avatar.c
@@ -470,27 +470,27 @@ static u8 DoForcedMovementInCurrentDirection(void (*a)(u8))
 
 static bool8 ForcedMovement_Slip(void)
 {
-    return DoForcedMovementInCurrentDirection(PlayerGoSpeed2);
+    return DoForcedMovementInCurrentDirection(PlayerWalkFast);
 }
 
 static bool8 ForcedMovement_WalkSouth(void)
 {
-    return DoForcedMovement(DIR_SOUTH, PlayerGoSpeed1);
+    return DoForcedMovement(DIR_SOUTH, PlayerWalkNormal);
 }
 
 static bool8 ForcedMovement_WalkNorth(void)
 {
-    return DoForcedMovement(DIR_NORTH, PlayerGoSpeed1);
+    return DoForcedMovement(DIR_NORTH, PlayerWalkNormal);
 }
 
 static bool8 ForcedMovement_WalkWest(void)
 {
-    return DoForcedMovement(DIR_WEST, PlayerGoSpeed1);
+    return DoForcedMovement(DIR_WEST, PlayerWalkNormal);
 }
 
 static bool8 ForcedMovement_WalkEast(void)
 {
-    return DoForcedMovement(DIR_EAST, PlayerGoSpeed1);
+    return DoForcedMovement(DIR_EAST, PlayerWalkNormal);
 }
 
 static bool8 ForcedMovement_PushedSouthByCurrent(void)
@@ -524,22 +524,22 @@ static u8 ForcedMovement_Slide(u8 direction, void (*b)(u8))
 
 static bool8 ForcedMovement_SlideSouth(void)
 {
-    return ForcedMovement_Slide(DIR_SOUTH, PlayerGoSpeed2);
+    return ForcedMovement_Slide(DIR_SOUTH, PlayerWalkFast);
 }
 
 static bool8 ForcedMovement_SlideNorth(void)
 {
-    return ForcedMovement_Slide(DIR_NORTH, PlayerGoSpeed2);
+    return ForcedMovement_Slide(DIR_NORTH, PlayerWalkFast);
 }
 
 static bool8 ForcedMovement_SlideWest(void)
 {
-    return ForcedMovement_Slide(DIR_WEST, PlayerGoSpeed2);
+    return ForcedMovement_Slide(DIR_WEST, PlayerWalkFast);
 }
 
 static bool8 ForcedMovement_SlideEast(void)
 {
-    return ForcedMovement_Slide(DIR_EAST, PlayerGoSpeed2);
+    return ForcedMovement_Slide(DIR_EAST, PlayerWalkFast);
 }
 
 static bool8 ForcedMovement_MatJump(void)
@@ -562,7 +562,7 @@ static bool8 ForcedMovement_MuddySlope(void)
     {
         Bike_UpdateBikeCounterSpeed(0);
         playerObjEvent->facingDirectionLocked = TRUE;
-        return DoForcedMovement(DIR_SOUTH, PlayerGoSpeed2);
+        return DoForcedMovement(DIR_SOUTH, PlayerWalkFast);
     }
     else
     {
@@ -631,8 +631,8 @@ static void PlayerNotOnBikeMoving(u8 direction, u16 heldKeys)
 
     if (gPlayerAvatar.flags & PLAYER_AVATAR_FLAG_SURFING)
     {
-    // speed 2 is fast, same speed as running
-        PlayerGoSpeed2(direction);
+        // same speed as running
+        PlayerWalkFast(direction);
         return;
     }
 
@@ -645,7 +645,7 @@ static void PlayerNotOnBikeMoving(u8 direction, u16 heldKeys)
     }
     else
     {
-        PlayerGoSpeed1(direction);
+        PlayerWalkNormal(direction);
     }
 }
 
@@ -953,16 +953,14 @@ void PlayerSetAnimId(u8 movementActionId, u8 copyableMovement)
     }
 }
 
-// normal speed (1 speed)
-void PlayerGoSpeed1(u8 a)
+void PlayerWalkNormal(u8 direction)
 {
-    PlayerSetAnimId(GetWalkNormalMovementAction(a), 2);
+    PlayerSetAnimId(GetWalkNormalMovementAction(direction), 2);
 }
 
-// fast speed (2 speed)
-void PlayerGoSpeed2(u8 a)
+void PlayerWalkFast(u8 direction)
 {
-    PlayerSetAnimId(GetWalkFastMovementAction(a), 2);
+    PlayerSetAnimId(GetWalkFastMovementAction(direction), 2);
 }
 
 void PlayerRideWaterCurrent(u8 a)
@@ -970,10 +968,9 @@ void PlayerRideWaterCurrent(u8 a)
     PlayerSetAnimId(GetRideWaterCurrentMovementAction(a), 2);
 }
 
-// fastest speed (4 speed)
-void PlayerGoSpeed4(u8 a)
+void PlayerWalkFaster(u8 direction)
 {
-    PlayerSetAnimId(GetWalkFastestMovementAction(a), 2);
+    PlayerSetAnimId(GetWalkFasterMovementAction(direction), 2);
 }
 
 static void PlayerRun(u8 a)