diff --git a/asm/union_room.s b/asm/union_room.s
index ec5d82918..2b1092c34 100755
--- a/asm/union_room.s
+++ b/asm/union_room.s
@@ -5,345 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_8017734
-sub_8017734: @ 8017734
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	adds r3, r0, 0
-	mov r8, r1
-	lsls r2, 24
-	lsrs r6, r2, 24
-	ldrb r1, [r1, 0x18]
-	movs r0, 0x1
-	ands r0, r1
-	cmp r0, 0
-	beq _080177A8
-	movs r5, 0
-	cmp r5, r6
-	bge _080177A8
-	movs r0, 0x4
-	negs r0, r0
-	mov r9, r0
-	movs r1, 0x2
-	negs r1, r1
-	mov r12, r1
-	adds r2, r3, 0
-	adds r2, 0x18
-	adds r1, r3, 0
-_08017766:
-	ldrb r0, [r2, 0x2]
-	movs r3, 0x3
-	ands r3, r0
-	cmp r3, 0
-	bne _0801779E
-	mov r0, r8
-	ldm r0!, {r4,r6,r7}
-	stm r1!, {r4,r6,r7}
-	ldm r0!, {r4,r6,r7}
-	stm r1!, {r4,r6,r7}
-	strh r3, [r2]
-	ldrb r1, [r2, 0x2]
-	mov r0, r9
-	ands r0, r1
-	movs r1, 0x1
-	orrs r0, r1
-	strb r0, [r2, 0x2]
-	movs r0, 0x40
-	strb r0, [r2, 0x3]
-	mov r0, r8
-	ldrb r1, [r0, 0x18]
-	mov r0, r12
-	ands r0, r1
-	mov r1, r8
-	strb r0, [r1, 0x18]
-	lsls r0, r5, 24
-	lsrs r0, 24
-	b _080177AA
-_0801779E:
-	adds r2, 0x20
-	adds r1, 0x20
-	adds r5, 0x1
-	cmp r5, r6
-	blt _08017766
-_080177A8:
-	movs r0, 0xFF
-_080177AA:
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8017734
-
-	thumb_func_start sub_80177B8
-sub_80177B8: @ 80177B8
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	sub sp, 0x10
-	adds r4, r1, 0
-	adds r6, r3, 0
-	ldr r3, [sp, 0x2C]
-	ldr r1, [sp, 0x30]
-	lsls r0, 24
-	lsrs r0, 24
-	mov r8, r0
-	lsls r4, 24
-	lsrs r4, 24
-	lsls r2, 24
-	lsrs r7, r2, 24
-	lsls r3, 24
-	lsrs r3, 24
-	mov r9, r3
-	lsls r1, 24
-	lsrs r1, 24
-	ldr r5, =gStringVar4
-	adds r1, 0x1
-	adds r0, r5, 0
-	movs r2, 0x2
-	movs r3, 0x2
-	bl ConvertIntToDecimalStringN
-	ldr r1, =gText_Colon
-	adds r0, r5, 0
-	bl StringAppend
-	str r7, [sp]
-	movs r0, 0
-	str r0, [sp, 0x4]
-	mov r0, r8
-	movs r1, 0x1
-	adds r2, r5, 0
-	adds r3, r4, 0
-	bl sub_80173E0
-	adds r4, 0x12
-	lsls r4, 24
-	lsrs r4, 24
-	ldrb r0, [r6, 0xA]
-	lsls r0, 25
-	lsrs r2, r0, 25
-	ldrb r1, [r6, 0x1A]
-	movs r0, 0x3
-	ands r0, r1
-	cmp r0, 0x1
-	bne _08017884
-	movs r0, 0x40
-	ands r2, r0
-	cmp r2, 0
-	bne _08017884
-	adds r0, r5, 0
-	adds r1, r6, 0
-	bl sub_8018404
-	str r7, [sp]
-	mov r0, r9
-	str r0, [sp, 0x4]
-	mov r0, r8
-	movs r1, 0x1
-	adds r2, r5, 0
-	adds r3, r4, 0
-	bl sub_80173E0
-	ldrb r1, [r6, 0x2]
-	ldrb r0, [r6, 0x3]
-	lsls r0, 8
-	orrs r1, r0
-	add r0, sp, 0x8
-	movs r2, 0x2
-	movs r3, 0x5
-	bl ConvertIntToDecimalStringN
-	ldr r1, =gText_UnkCtrlCodeF907
-	adds r0, r5, 0
-	bl StringCopy
-	adds r0, r5, 0
-	add r1, sp, 0x8
-	bl StringAppend
-	movs r0, 0x1
-	adds r1, r5, 0
-	movs r2, 0x88
-	bl GetStringRightAlignXOffset
-	adds r3, r0, 0
-	lsls r3, 24
-	lsrs r3, 24
-	str r7, [sp]
-	mov r0, r9
-	str r0, [sp, 0x4]
-	mov r0, r8
-	movs r1, 0x1
-	adds r2, r5, 0
-	bl sub_80173E0
-_08017884:
-	add sp, 0x10
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80177B8
-
-	thumb_func_start sub_80178A0
-sub_80178A0: @ 80178A0
-	push {r4-r7,lr}
-	mov r7, r9
-	mov r6, r8
-	push {r6,r7}
-	sub sp, 0x10
-	adds r5, r3, 0
-	ldr r3, [sp, 0x2C]
-	lsls r0, 24
-	lsrs r0, 24
-	mov r9, r0
-	lsls r1, 24
-	lsrs r6, r1, 24
-	lsls r2, 24
-	lsrs r2, 24
-	mov r8, r2
-	lsls r3, 24
-	lsrs r7, r3, 24
-	ldrb r1, [r5, 0x1A]
-	movs r0, 0x3
-	ands r0, r1
-	cmp r0, 0x1
-	bne _0801792A
-	ldr r4, =gStringVar4
-	adds r0, r4, 0
-	adds r1, r5, 0
-	bl sub_8018404
-	mov r0, r8
-	str r0, [sp]
-	str r7, [sp, 0x4]
-	mov r0, r9
-	movs r1, 0x1
-	adds r2, r4, 0
-	adds r3, r6, 0
-	bl sub_80173E0
-	ldrb r1, [r5, 0x2]
-	ldrb r0, [r5, 0x3]
-	lsls r0, 8
-	orrs r1, r0
-	add r0, sp, 0x8
-	movs r2, 0x2
-	movs r3, 0x5
-	bl ConvertIntToDecimalStringN
-	ldr r1, =gText_UnkCtrlCodeF907
-	adds r0, r4, 0
-	bl StringCopy
-	adds r0, r4, 0
-	add r1, sp, 0x8
-	bl StringAppend
-	movs r0, 0x1
-	adds r1, r4, 0
-	movs r2, 0x68
-	bl GetStringRightAlignXOffset
-	adds r3, r0, 0
-	lsls r3, 24
-	lsrs r3, 24
-	mov r0, r8
-	str r0, [sp]
-	str r7, [sp, 0x4]
-	mov r0, r9
-	movs r1, 0x1
-	adds r2, r4, 0
-	bl sub_80173E0
-_0801792A:
-	add sp, 0x10
-	pop {r3,r4}
-	mov r8, r3
-	mov r9, r4
-	pop {r4-r7}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end sub_80178A0
-
-	thumb_func_start sub_8017940
-sub_8017940: @ 8017940
-	push {r4,lr}
-	sub sp, 0x4
-	mov r4, sp
-	adds r4, 0x2
-	mov r0, sp
-	adds r1, r4, 0
-	bl GetXYCoordsOneStepInFrontOfPlayer
-	mov r0, sp
-	movs r1, 0
-	ldrsh r0, [r0, r1]
-	cmp r0, 0x9
-	bne _08017978
-	movs r1, 0
-	ldrsh r0, [r4, r1]
-	cmp r0, 0x8
-	bne _08017978
-	ldr r0, =gPlayerAvatar
-	ldrb r0, [r0, 0x3]
-	cmp r0, 0x2
-	beq _0801796E
-	cmp r0, 0
-	bne _08017978
-_0801796E:
-	movs r0, 0x1
-	b _0801797A
-	.pool
-_08017978:
-	movs r0, 0
-_0801797A:
-	add sp, 0x4
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8017940
-
-	thumb_func_start sub_8017984
-sub_8017984: @ 8017984
-	push {lr}
-	cmp r0, 0x4
-	beq _0801799C
-	cmp r0, 0x4
-	ble _080179A4
-	cmp r0, 0x5
-	beq _08017998
-	cmp r0, 0x8
-	beq _080179A0
-	b _080179A4
-_08017998:
-	movs r0, 0x1
-	b _080179A6
-_0801799C:
-	movs r0, 0x2
-	b _080179A6
-_080179A0:
-	movs r0, 0x3
-	b _080179A6
-_080179A4:
-	movs r0, 0
-_080179A6:
-	pop {r1}
-	bx r1
-	thumb_func_end sub_8017984
-
-	thumb_func_start sub_80179AC
-sub_80179AC: @ 80179AC
-	push {r4,lr}
-	sub sp, 0x20
-	adds r4, r0, 0
-	mov r0, sp
-	adds r1, r4, 0
-	bl sub_8018404
-	adds r4, 0x2
-	adds r0, r4, 0
-	bl ReadAsU16
-	lsls r0, 16
-	lsrs r0, 16
-	mov r1, sp
-	bl sub_800E540
-	add sp, 0x20
-	pop {r4}
-	pop {r1}
-	bx r1
-	thumb_func_end sub_80179AC
-
 	thumb_func_start sub_80179D4
 sub_80179D4: @ 80179D4
 	push {r4-r6,lr}
diff --git a/src/union_room.c b/src/union_room.c
index 620a13e58..4c9cb3886 100644
--- a/src/union_room.c
+++ b/src/union_room.c
@@ -35,6 +35,7 @@
 #include "field_screen_effect.h"
 #include "script_pokemon_util_80F87D8.h"
 #include "international_string_util.h"
+#include "field_player_avatar.h"
 #include "mevent.h"
 
 struct UnkStruct_Shared
@@ -222,7 +223,7 @@ void sub_80149C4(void);
 u8 sub_80132D4(struct UnkStruct_Main0 *arg0);
 void sub_80178A0(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
 u32 sub_80176E4(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1);
-u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_Shared *arg1, u8 arg2);
+u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2);
 u8 sub_8013E44(void);
 u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id);
 void sub_8013BD8(struct UnkStruct_Group *arg0, s32 id);
@@ -267,7 +268,7 @@ s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTe
 s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6);
 s32 sub_8017CB0(struct UnkStruct_Main0 * arg);
 bool32 sub_8018024(void);
-u32 sub_8017984(u32 arg0);
+u32 sub_8017984(s32 arg0);
 void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2);
 void sub_8017D9C(u8 *dst, u32 arg1, u32 playerGender);
 u32 sub_80179AC(struct UnkStruct_x20 *arg0);
@@ -380,6 +381,8 @@ extern const struct UnkStruct_Shared gUnknown_082F045C;
 
 extern const u8 *const gUnknown_082F04D8[22];
 
+extern const u8 gText_Colon[];
+
 // code
 void nullsub_89(void)
 {
@@ -973,7 +976,7 @@ u8 sub_80132D4(struct UnkStruct_Main0 *arg0)
     }
 
     for (id = 0; id < 4; id++)
-        sub_8017734(data->field_0->arr, &data->field_4->arr[id].unk0, 5);
+        sub_8017734(data->field_0->arr, &data->field_4->arr[id], 5);
 
     if (ret != 2)
     {
@@ -1498,7 +1501,7 @@ u8 sub_8013E44(void)
 
     for (id = 0; id < 4; id++)
     {
-        if (sub_8017734(data->field_0->arr, &data->field_4->arr[id].unk0, 16) != 0xFF)
+        if (sub_8017734(data->field_0->arr, &data->field_4->arr[id], 16) != 0xFF)
             ret = 1;
     }
 
@@ -3465,7 +3468,7 @@ u8 sub_8016B00(void)
     }
     for (i = 0; i < 4; i++)
     {
-        if (sub_8017734(&structPtr->field_0->arr[0], &structPtr->field_4->arr[i].unk0, 8) != 0xFF)
+        if (sub_8017734(&structPtr->field_0->arr[0], &structPtr->field_4->arr[i], 8) != 0xFF)
             r7 = 1;
     }
 
@@ -4115,3 +4118,105 @@ u32 sub_80176E4(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1)
 
     return result;
 }
+
+u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
+{
+    s32 i;
+
+    if (arg1->unk18)
+    {
+        for (i = 0; i < arg2; i++)
+        {
+            if (arg0[i].field_1A_0 == 0)
+            {
+                arg0[i].unk = arg1->unk0;
+                arg0[i].field_18 = 0;
+                arg0[i].field_1A_0 = 1;
+                arg0[i].field_1B = 64;
+                arg1->unk18 = FALSE;
+                return i;
+            }
+        }
+    }
+
+    return 0xFF;
+}
+
+void sub_80177B8(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id)
+{
+    u8 r2;
+    u8 sp0[6];
+
+    ConvertIntToDecimalStringN(gStringVar4, id + 1, STR_CONV_MODE_LEADING_ZEROS, 2);
+    StringAppend(gStringVar4, gText_Colon);
+    sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, 0);
+    arg1 += 18;
+    r2 = arg3->unk.field_0.unk_0a_0;
+    if (arg3->field_1A_0 == 1 && !(r2 & 0x40))
+    {
+        sub_8018404(gStringVar4, arg3);
+        sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, arg4);
+        ConvertIntToDecimalStringN(sp0, arg3->unk.field_0.unk_00.playerTrainerId[0] | (arg3->unk.field_0.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
+        StringCopy(gStringVar4, gText_UnkCtrlCodeF907);
+        StringAppend(gStringVar4, sp0);
+        sub_80173E0(arg0, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x88), arg2, arg4);
+    }
+}
+
+void sub_80178A0(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id)
+{
+    u8 sp0[6];
+
+    if (arg3->field_1A_0 == 1)
+    {
+        sub_8018404(gStringVar4, arg3);
+        sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, arg4);
+        ConvertIntToDecimalStringN(sp0, arg3->unk.field_0.unk_00.playerTrainerId[0] | (arg3->unk.field_0.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
+        StringCopy(gStringVar4, gText_UnkCtrlCodeF907);
+        StringAppend(gStringVar4, sp0);
+        sub_80173E0(arg0, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x68), arg2, arg4);
+    }
+}
+
+bool32 sub_8017940(void)
+{
+    s16 x, y;
+    GetXYCoordsOneStepInFrontOfPlayer(&x, &y);
+    if (x != 9)
+    {
+        return FALSE;
+    }
+    if (y != 8)
+    {
+        return FALSE;
+    }
+    if (gPlayerAvatar.tileTransitionState == 2 || gPlayerAvatar.tileTransitionState == 0)
+    {
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+u32 sub_8017984(s32 arg0)
+{
+    switch (arg0)
+    {
+    case 5:
+        return 1;
+    case 4:
+        return 2;
+    case 8:
+        return 3;
+    case 3:
+    default:
+        return 0;
+    }
+}
+
+u32 sub_80179AC(struct UnkStruct_x20 *arg0)
+{
+    u8 sp0[30];
+    sub_8018404(sp0, arg0);
+    return sub_800E540(ReadAsU16(arg0->unk.field_0.unk_00.playerTrainerId), sp0);
+}