diff --git a/src/battle-phases.ts b/src/battle-phases.ts
index fdde003e3..e3b89507c 100644
--- a/src/battle-phases.ts
+++ b/src/battle-phases.ts
@@ -284,7 +284,7 @@ export class SelectStarterPhase extends BattlePhase {
       const loadPokemonAssets: Promise<void>[] = [];
       for (let starter of starters) {
         const starterProps = this.scene.gameData.getSpeciesDexAttrProps(starter.species, starter.dexAttr);
-        const starterFormIndex = Math.min(starterProps.formIndex, starter.species.forms.length - 1);
+        const starterFormIndex = Math.min(starterProps.formIndex, Math.max(starter.species.forms.length - 1, 0));
         const starterGender = starter.species.malePercent !== null
           ? !starterProps.female ? Gender.MALE : Gender.FEMALE
           : Gender.GENDERLESS;
diff --git a/src/data/pokemon-species.ts b/src/data/pokemon-species.ts
index cec9e062a..e566e67dd 100644
--- a/src/data/pokemon-species.ts
+++ b/src/data/pokemon-species.ts
@@ -352,7 +352,7 @@ export default class PokemonSpecies extends PokemonSpeciesForm {
 
   getName(formIndex?: integer): string {
     if (formIndex !== undefined && this.forms.length) {
-      const form = this.forms[Math.min(formIndex, this.forms.length - 1)];
+      const form = this.forms[formIndex];
       switch (form.formKey) {
         case SpeciesFormKey.MEGA:
         case SpeciesFormKey.ETERNAMAX:
diff --git a/src/system/pokemon-data.ts b/src/system/pokemon-data.ts
index 3d8cc97a8..46cd439b0 100644
--- a/src/system/pokemon-data.ts
+++ b/src/system/pokemon-data.ts
@@ -7,7 +7,7 @@ import { PokeballType } from "../data/pokeball";
 import { getPokemonSpecies } from "../data/pokemon-species";
 import { Species } from "../data/enums/species";
 import { Status } from "../data/status-effect";
-import Pokemon, { EnemyPokemon, PlayerPokemon, PokemonMove, PokemonSummonData } from "../pokemon";
+import Pokemon, { EnemyPokemon, PokemonMove, PokemonSummonData } from "../pokemon";
 
 export default class PokemonData {
   public id: integer;
@@ -48,7 +48,7 @@ export default class PokemonData {
     this.id = source.id;
     this.player = sourcePokemon ? sourcePokemon.isPlayer() : source.player;
     this.species = sourcePokemon ? sourcePokemon.species.speciesId : source.species;
-    this.formIndex = source.formIndex;
+    this.formIndex = Math.max(Math.min(source.formIndex, getPokemonSpecies(this.species).forms.length - 1), 0);
     this.abilityIndex = source.abilityIndex;
     this.shiny = source.shiny;
     this.pokeball = source.pokeball;