diff --git a/src/data/mystery-encounters/encounters/uncommon-breed-encounter.ts b/src/data/mystery-encounters/encounters/uncommon-breed-encounter.ts
index 3a0dd68b02e..d3679825ac8 100644
--- a/src/data/mystery-encounters/encounters/uncommon-breed-encounter.ts
+++ b/src/data/mystery-encounters/encounters/uncommon-breed-encounter.ts
@@ -123,9 +123,7 @@ export const UncommonBreedEncounter: MysteryEncounter =
         yoyo: true,
         y: "-=20",
         loop: 1,
-        onComplete: () => {
-          encounter.introVisuals?.playShinySparkles();
-        }
+        onComplete: () => encounter.introVisuals?.playShinySparkles()
       });
 
       scene.time.delayedCall(500, () => scene.playSound("battle_anims/PRSFX- Spotlight2"));
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index f3e8ae35671..656ccdfee34 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -665,6 +665,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
   }
 
   initShinySparkle(): void {
+    // TODO
     const keySuffix = this.variant ? `_${this.variant + 1}` : "";
     const key = `shiny${keySuffix}`;
     const shinySparkle = this.scene.addFieldSprite(0, 0, key);
diff --git a/src/phases/egg-hatch-phase.ts b/src/phases/egg-hatch-phase.ts
index 90aceeb46bc..734744ef23a 100644
--- a/src/phases/egg-hatch-phase.ts
+++ b/src/phases/egg-hatch-phase.ts
@@ -341,6 +341,7 @@ export class EggHatchPhase extends Phase {
       this.pokemon.cry();
       if (isShiny) {
         this.scene.time.delayedCall(Utils.fixedInt(500), () => {
+          // TODO
           this.pokemonShinySparkle.play(`sparkle${this.pokemon.variant ? `_${this.pokemon.variant + 1}` : ""}`);
           this.scene.playSound("se/sparkle");
         });
diff --git a/src/test/mystery-encounter/encounters/the-pokemon-salesman-encounter.test.ts b/src/test/mystery-encounter/encounters/the-pokemon-salesman-encounter.test.ts
index a50c0cf4c9e..d78c71ff6c7 100644
--- a/src/test/mystery-encounter/encounters/the-pokemon-salesman-encounter.test.ts
+++ b/src/test/mystery-encounter/encounters/the-pokemon-salesman-encounter.test.ts
@@ -122,7 +122,7 @@ describe("The Pokemon Salesman - Mystery Encounter", () => {
       });
     });
 
-    it("Should update the player's money properly", async () => {
+    it("should update the player's money properly", async () => {
       const initialMoney = 20000;
       scene.money = initialMoney;
       const updateMoneySpy = vi.spyOn(EncounterPhaseUtils, "updatePlayerMoney");
@@ -136,7 +136,7 @@ describe("The Pokemon Salesman - Mystery Encounter", () => {
       expect(scene.money).toBe(initialMoney - price);
     });
 
-    it("Should add the Pokemon to the party", async () => {
+    it("should add the Pokemon to the party", async () => {
       scene.money = 20000;
       await game.runToMysteryEncounter(MysteryEncounterType.THE_POKEMON_SALESMAN, defaultParty);
 
@@ -152,6 +152,18 @@ describe("The Pokemon Salesman - Mystery Encounter", () => {
       expect(newlyPurchasedPokemon!.moveset.length > 0).toBeTruthy();
     });
 
+    it("should give the purchased Pokemon its HA or make it shiny", async () => {
+      scene.money = 20000;
+      await game.runToMysteryEncounter(MysteryEncounterType.THE_POKEMON_SALESMAN, defaultParty);
+      await runMysteryEncounterToEnd(game, 1);
+
+      const newlyPurchasedPokemon = scene.getPlayerParty()[scene.getPlayerParty().length - 1];
+      const isshiny = newlyPurchasedPokemon.shiny;
+      const hasHA = newlyPurchasedPokemon.abilityIndex === 2;
+      expect(isshiny || hasHA).toBeTruthy();
+      expect(isshiny && hasHA).toBeFalsy();
+    });
+
     it("should be disabled if player does not have enough money", async () => {
       scene.money = 0;
       await game.runToMysteryEncounter(MysteryEncounterType.THE_POKEMON_SALESMAN, defaultParty);
diff --git a/src/test/mystery-encounter/encounters/the-strong-stuff-encounter.test.ts b/src/test/mystery-encounter/encounters/the-strong-stuff-encounter.test.ts
index be0e6e68b5e..83c54c19342 100644
--- a/src/test/mystery-encounter/encounters/the-strong-stuff-encounter.test.ts
+++ b/src/test/mystery-encounter/encounters/the-strong-stuff-encounter.test.ts
@@ -109,6 +109,7 @@ describe("The Strong Stuff - Mystery Encounter", () => {
             species: getPokemonSpecies(Species.SHUCKLE),
             isBoss: true,
             bossSegments: 5,
+            shiny: false,
             customPokemonData: new CustomPokemonData({ spriteScale: 1.25 }),
             nature: Nature.BOLD,
             moveSet: [ Moves.INFESTATION, Moves.SALT_CURE, Moves.GASTRO_ACID, Moves.HEAL_ORDER ],
diff --git a/src/test/mystery-encounter/encounters/trash-to-treasure-encounter.test.ts b/src/test/mystery-encounter/encounters/trash-to-treasure-encounter.test.ts
index 8286c6a694b..f8d96487092 100644
--- a/src/test/mystery-encounter/encounters/trash-to-treasure-encounter.test.ts
+++ b/src/test/mystery-encounter/encounters/trash-to-treasure-encounter.test.ts
@@ -92,6 +92,7 @@ describe("Trash to Treasure - Mystery Encounter", () => {
           {
             species: getPokemonSpecies(Species.GARBODOR),
             isBoss: true,
+            shiny: false,
             formIndex: 1,
             bossSegmentModifier: 1,
             moveSet: [ Moves.PAYBACK, Moves.GUNK_SHOT, Moves.STOMPING_TANTRUM, Moves.DRAIN_PUNCH ],