diff --git a/include/constants/species.h b/include/constants/species.h
index ff91c8090..f7a6d9cca 100644
--- a/include/constants/species.h
+++ b/include/constants/species.h
@@ -812,8 +812,6 @@
 #define SPECIES_MELTAN 808
 #define SPECIES_MELMETAL 809
 
-#define IS_ULTRA_BEAST(speciesId)((speciesId >= SPECIES_NIHILEGO && speciesId <= SPECIES_GUZZLORD) || (speciesId >= SPECIES_POIPOLE && speciesId <= SPECIES_BLACEPHALON))
-
 #define FORMS_START SPECIES_MELMETAL
 
 // Megas
@@ -2221,4 +2219,9 @@
 
 #define HOENN_DEX_COUNT 212
 
+// species flags
+#define F_ULTRA_BEAST   (1 << 0)
+#define F_ALOLAN_FORM   (1 << 1)
+#define F_GALARIAN_FORM (1 << 2)
+
 #endif  // GUARD_CONSTANTS_SPECIES_H
diff --git a/include/pokemon.h b/include/pokemon.h
index f00008d95..e9eb1d4b3 100644
--- a/include/pokemon.h
+++ b/include/pokemon.h
@@ -206,6 +206,7 @@ struct BaseStats
  /* 0x19 */ u8 safariZoneFleeRate;
  /* 0x1A */ u8 bodyColor : 7;
             u8 noFlip : 1;
+ /* 0x1B */ u8 flags;
 };
 
 struct BattleMove
diff --git a/src/data/pokemon/base_stats.h b/src/data/pokemon/base_stats.h
index 9b2e97137..efe69a62b 100644
--- a/src/data/pokemon/base_stats.h
+++ b/src/data/pokemon/base_stats.h
@@ -22632,6 +22632,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_WHITE,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_BUZZWOLE] =
@@ -22661,6 +22662,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_RED,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_PHEROMOSA] =
@@ -22689,6 +22691,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_WHITE,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_XURKITREE] =
@@ -22717,6 +22720,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BLACK,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_CELESTEELA] =
@@ -22747,6 +22751,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_GREEN,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_KARTANA] =
@@ -22775,6 +22780,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_WHITE,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_GUZZLORD] =
@@ -22803,6 +22809,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BLACK,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_NECROZMA] =
@@ -22917,6 +22924,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_PURPLE,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_NAGANADEL] =
@@ -22945,6 +22953,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_PURPLE,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_STAKATAKA] =
@@ -22973,6 +22982,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_GRAY,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_BLACEPHALON] =
@@ -23001,6 +23011,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_WHITE,
         .noFlip = FALSE,
+        .flags = F_ULTRA_BEAST,
     },
 
     [SPECIES_ZERAORA] =
@@ -24468,6 +24479,7 @@ const struct BaseStats gBaseStats[] =
         .abilityHidden = ABILITY_THICK_FAT,
         .bodyColor = BODY_COLOR_BLACK,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_RATICATE_ALOLAN] =
@@ -24498,6 +24510,7 @@ const struct BaseStats gBaseStats[] =
         .abilityHidden = ABILITY_THICK_FAT,
         .bodyColor = BODY_COLOR_BLACK,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_RAICHU_ALOLAN] =
@@ -24526,6 +24539,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BROWN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_SANDSHREW_ALOLAN] =
@@ -24558,6 +24572,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BLUE,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_SANDSLASH_ALOLAN] =
@@ -24587,6 +24602,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BLUE,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_VULPIX_ALOLAN] =
@@ -24619,6 +24635,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BLUE,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_NINETALES_ALOLAN] =
@@ -24649,6 +24666,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BLUE,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_DIGLETT_ALOLAN] =
@@ -24679,6 +24697,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BROWN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_DUGTRIO_ALOLAN] =
@@ -24709,6 +24728,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BROWN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_MEOWTH_ALOLAN] =
@@ -24739,6 +24759,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_GRAY,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_PERSIAN_ALOLAN] =
@@ -24769,6 +24790,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_GRAY,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_GEODUDE_ALOLAN] =
@@ -24799,6 +24821,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BROWN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_GRAVELER_ALOLAN] =
@@ -24829,6 +24852,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BROWN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_GOLEM_ALOLAN] =
@@ -24856,6 +24880,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_BROWN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_GRIMER_ALOLAN] =
@@ -24888,6 +24913,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_GREEN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_MUK_ALOLAN] =
@@ -24918,6 +24944,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_GREEN,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_EXEGGUTOR_ALOLAN] =
@@ -24947,6 +24974,7 @@ const struct BaseStats gBaseStats[] =
         #endif
         .bodyColor = BODY_COLOR_YELLOW,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_MAROWAK_ALOLAN] =
@@ -24976,6 +25004,7 @@ const struct BaseStats gBaseStats[] =
         .abilityHidden = ABILITY_ROCK_HEAD,
         .bodyColor = BODY_COLOR_PURPLE,
         .noFlip = FALSE,
+        .flags = F_ALOLAN_FORM,
     },
 
     [SPECIES_PIKACHU_COSPLAY] =