diff --git a/src/data/pokemon-species.ts b/src/data/pokemon-species.ts
index 041632b183d..43b719878bb 100644
--- a/src/data/pokemon-species.ts
+++ b/src/data/pokemon-species.ts
@@ -1003,19 +1003,22 @@ export class PokemonForm extends PokemonSpeciesForm {
   public formName: string;
   public formKey: string;
   public formSpriteKey: string | null;
+  public isUnobtainable: boolean;
 
   // This is a collection of form keys that have in-run form changes, but should still be separately selectable from the start screen
   private starterSelectableKeys: string[] = [ "10", "50", "10-pc", "50-pc", "red", "orange", "yellow", "green", "blue", "indigo", "violet" ];
 
   constructor(formName: string, formKey: string, type1: Type, type2: Type | null, height: number, weight: number, ability1: Abilities, ability2: Abilities, abilityHidden: Abilities,
     baseTotal: number, baseHp: number, baseAtk: number, baseDef: number, baseSpatk: number, baseSpdef: number, baseSpd: number,
-    catchRate: number, baseFriendship: number, baseExp: number, genderDiffs: boolean = false, formSpriteKey: string | null = null, isStarterSelectable: boolean = false
+    catchRate: number, baseFriendship: number, baseExp: number, genderDiffs: boolean = false, formSpriteKey: string | null = null, isStarterSelectable: boolean = false,
+    isUnobtainable: boolean = false
   ) {
     super(type1, type2, height, weight, ability1, ability2, abilityHidden, baseTotal, baseHp, baseAtk, baseDef, baseSpatk, baseSpdef, baseSpd,
       catchRate, baseFriendship, baseExp, genderDiffs, (isStarterSelectable || !formKey));
     this.formName = formName;
     this.formKey = formKey;
     this.formSpriteKey = formSpriteKey;
+    this.isUnobtainable = isUnobtainable;
   }
 
   getFormSpriteKey(_formIndex?: number) {
@@ -1812,7 +1815,7 @@ export function initSpecies() {
       new PokemonForm("Dragon", "dragon", Type.DRAGON, null, 3.2, 320, Abilities.MULTITYPE, Abilities.NONE, Abilities.NONE, 720, 120, 120, 120, 120, 120, 120, 3, 0, 360),
       new PokemonForm("Dark", "dark", Type.DARK, null, 3.2, 320, Abilities.MULTITYPE, Abilities.NONE, Abilities.NONE, 720, 120, 120, 120, 120, 120, 120, 3, 0, 360),
       new PokemonForm("Fairy", "fairy", Type.FAIRY, null, 3.2, 320, Abilities.MULTITYPE, Abilities.NONE, Abilities.NONE, 720, 120, 120, 120, 120, 120, 120, 3, 0, 360),
-      new PokemonForm("???", "unknown", Type.UNKNOWN, null, 3.2, 320, Abilities.MULTITYPE, Abilities.NONE, Abilities.NONE, 720, 120, 120, 120, 120, 120, 120, 3, 0, 360),
+      new PokemonForm("???", "unknown", Type.UNKNOWN, null, 3.2, 320, Abilities.MULTITYPE, Abilities.NONE, Abilities.NONE, 720, 120, 120, 120, 120, 120, 120, 3, 0, 360, false, null, false, true),
     ),
     new PokemonSpecies(Species.VICTINI, 5, false, false, true, "Victory Pokémon", Type.PSYCHIC, Type.FIRE, 0.4, 4, Abilities.VICTORY_STAR, Abilities.NONE, Abilities.NONE, 600, 100, 100, 100, 100, 100, 100, 3, 100, 300, GrowthRate.SLOW, null, false),
     new PokemonSpecies(Species.SNIVY, 5, false, false, false, "Grass Snake Pokémon", Type.GRASS, null, 0.6, 8.1, Abilities.OVERGROW, Abilities.NONE, Abilities.CONTRARY, 308, 45, 45, 55, 45, 55, 63, 45, 70, 62, GrowthRate.MEDIUM_SLOW, 87.5, false),
@@ -2366,7 +2369,7 @@ export function initSpecies() {
     ),
     new PokemonSpecies(Species.MARSHADOW, 7, false, false, true, "Gloomdweller Pokémon", Type.FIGHTING, Type.GHOST, 0.7, 22.2, Abilities.TECHNICIAN, Abilities.NONE, Abilities.NONE, 600, 90, 125, 80, 90, 90, 125, 3, 0, 300, GrowthRate.SLOW, null, false, true,
       new PokemonForm("Normal", "", Type.FIGHTING, Type.GHOST, 0.7, 22.2, Abilities.TECHNICIAN, Abilities.NONE, Abilities.NONE, 600, 90, 125, 80, 90, 90, 125, 3, 0, 300, false, null, true),
-      new PokemonForm("Zenith", "zenith", Type.FIGHTING, Type.GHOST, 0.7, 22.2, Abilities.TECHNICIAN, Abilities.NONE, Abilities.NONE, 600, 90, 125, 80, 90, 90, 125, 3, 0, 300)
+      new PokemonForm("Zenith", "zenith", Type.FIGHTING, Type.GHOST, 0.7, 22.2, Abilities.TECHNICIAN, Abilities.NONE, Abilities.NONE, 600, 90, 125, 80, 90, 90, 125, 3, 0, 300, false, null, false, true)
     ),
     new PokemonSpecies(Species.POIPOLE, 7, true, false, false, "Poison Pin Pokémon", Type.POISON, null, 0.6, 1.8, Abilities.BEAST_BOOST, Abilities.NONE, Abilities.NONE, 420, 67, 73, 67, 73, 67, 73, 45, 0, 210, GrowthRate.SLOW, null, false),
     new PokemonSpecies(Species.NAGANADEL, 7, true, false, false, "Poison Pin Pokémon", Type.POISON, Type.DRAGON, 3.6, 150, Abilities.BEAST_BOOST, Abilities.NONE, Abilities.NONE, 540, 73, 73, 73, 127, 73, 121, 45, 0, 270, GrowthRate.SLOW, null, false),
@@ -2465,11 +2468,11 @@ export function initSpecies() {
     new PokemonSpecies(Species.GRAPPLOCT, 8, false, false, false, "Jujitsu Pokémon", Type.FIGHTING, null, 1.6, 39, Abilities.LIMBER, Abilities.NONE, Abilities.TECHNICIAN, 480, 80, 118, 90, 70, 80, 42, 45, 50, 168, GrowthRate.MEDIUM_SLOW, 50, false),
     new PokemonSpecies(Species.SINISTEA, 8, false, false, false, "Black Tea Pokémon", Type.GHOST, null, 0.1, 0.2, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 308, 40, 45, 45, 74, 54, 50, 120, 50, 62, GrowthRate.MEDIUM_FAST, null, false, false,
       new PokemonForm("Phony Form", "phony", Type.GHOST, null, 0.1, 0.2, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 308, 40, 45, 45, 74, 54, 50, 120, 50, 62, false, "", true),
-      new PokemonForm("Antique Form", "antique", Type.GHOST, null, 0.1, 0.2, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 308, 40, 45, 45, 74, 54, 50, 120, 50, 62, false, "", true),
+      new PokemonForm("Antique Form", "antique", Type.GHOST, null, 0.1, 0.2, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 308, 40, 45, 45, 74, 54, 50, 120, 50, 62, false, "", true, true),
     ),
     new PokemonSpecies(Species.POLTEAGEIST, 8, false, false, false, "Black Tea Pokémon", Type.GHOST, null, 0.2, 0.4, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 508, 60, 65, 65, 134, 114, 70, 60, 50, 178, GrowthRate.MEDIUM_FAST, null, false, false,
       new PokemonForm("Phony Form", "phony", Type.GHOST, null, 0.2, 0.4, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 508, 60, 65, 65, 134, 114, 70, 60, 50, 178, false, "", true),
-      new PokemonForm("Antique Form", "antique", Type.GHOST, null, 0.2, 0.4, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 508, 60, 65, 65, 134, 114, 70, 60, 50, 178, false, "", true),
+      new PokemonForm("Antique Form", "antique", Type.GHOST, null, 0.2, 0.4, Abilities.WEAK_ARMOR, Abilities.NONE, Abilities.CURSED_BODY, 508, 60, 65, 65, 134, 114, 70, 60, 50, 178, false, "", true, true),
     ),
     new PokemonSpecies(Species.HATENNA, 8, false, false, false, "Calm Pokémon", Type.PSYCHIC, null, 0.4, 3.4, Abilities.HEALER, Abilities.ANTICIPATION, Abilities.MAGIC_BOUNCE, 265, 42, 30, 45, 56, 53, 39, 235, 50, 53, GrowthRate.SLOW, 0, false),
     new PokemonSpecies(Species.HATTREM, 8, false, false, false, "Serene Pokémon", Type.PSYCHIC, null, 0.6, 4.8, Abilities.HEALER, Abilities.ANTICIPATION, Abilities.MAGIC_BOUNCE, 370, 57, 40, 65, 86, 73, 49, 120, 50, 130, GrowthRate.SLOW, 0, false),
diff --git a/src/ui/pokedex-page-ui-handler.ts b/src/ui/pokedex-page-ui-handler.ts
index 683045d7814..e3386033030 100644
--- a/src/ui/pokedex-page-ui-handler.ts
+++ b/src/ui/pokedex-page-ui-handler.ts
@@ -1583,7 +1583,7 @@ export default class PokedexPageUiHandler extends MessageUiHandler {
                 if (this.species.forms[newFormIndex].isStarterSelectable || globalScene.dexForDevs) { // TODO: are those bangs correct?
                   break;
                 }
-              } while (newFormIndex !== props.formIndex);
+              } while (newFormIndex !== props.formIndex || this.species.forms[newFormIndex].isUnobtainable);
               starterAttributes.form = newFormIndex; // store the selected form
               this.savedStarterAttributes.form = starterAttributes.form;
               this.formIndex = newFormIndex;
diff --git a/src/ui/pokedex-ui-handler.ts b/src/ui/pokedex-ui-handler.ts
index 2b5a7756429..ab2a3e7afb0 100644
--- a/src/ui/pokedex-ui-handler.ts
+++ b/src/ui/pokedex-ui-handler.ts
@@ -1698,7 +1698,7 @@ export default class PokedexUiHandler extends MessageUiHandler {
 
   openFormTray(species: PokemonSpecies): boolean {
 
-    this.trayForms = species.forms;
+    this.trayForms = species.forms.filter(f => !f.isUnobtainable);
 
     this.trayNumIcons = this.trayForms.length;
     this.trayRows = Math.floor(this.trayNumIcons / 9) + (this.trayNumIcons % 9 === 0 ? 0 : 1);