diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 81c65d85e06..f755346217e 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -17,6 +17,7 @@ import {
   isNullOrUndefined,
   BooleanHolder,
   type Constructor,
+  makeArray,
 } from "#app/utils/common";
 import { deepMergeSpriteData } from "#app/utils/data";
 import type { Modifier, ModifierPredicate, TurnHeldItemTransferModifier } from "./modifier/modifier";
diff --git a/src/data/pokemon-forms.ts b/src/data/pokemon-forms.ts
index ea129454034..4e8dc33deda 100644
--- a/src/data/pokemon-forms.ts
+++ b/src/data/pokemon-forms.ts
@@ -1,7 +1,7 @@
 import type Pokemon from "../field/pokemon";
 import { allMoves } from "./data-lists";
 import { MoveCategory } from "#enums/MoveCategory";
-import type { Constructor, nil } from "#app/utils/common";
+import { makeArray, type Constructor, type nil } from "#app/utils/common";
 import { AbilityId } from "#enums/ability-id";
 import { MoveId } from "#enums/move-id";
 import { SpeciesId } from "#enums/species-id";
diff --git a/src/data/trainers/trainer-config.ts b/src/data/trainers/trainer-config.ts
index 8c065666202..e0b9a7fa719 100644
--- a/src/data/trainers/trainer-config.ts
+++ b/src/data/trainers/trainer-config.ts
@@ -1,7 +1,7 @@
 import { globalScene } from "#app/global-scene";
 import { modifierTypes } from "../data-lists";
 import { PokemonMove } from "../moves/pokemon-move";
-import { toReadableString, isNullOrUndefined, randSeedItem, randSeedInt, randSeedIntRange } from "#app/utils/common";
+import { toReadableString, isNullOrUndefined, randSeedItem, randSeedInt, makeArray, randSeedIntRange } from "#app/utils/common";
 import { pokemonEvolutions, pokemonPrevolutions } from "#app/data/balance/pokemon-evolutions";
 import { getPokemonSpecies } from "#app/data/pokemon-species";
 import { tmSpecies } from "#app/data/balance/tms";
@@ -554,10 +554,7 @@ export class TrainerConfig {
     this.speciesPools = evilAdminTrainerPools[poolName];
 
     signatureSpecies.forEach((speciesPool, s) => {
-      if (!Array.isArray(speciesPool)) {
-        speciesPool = [speciesPool];
-      }
-      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(speciesPool));
+      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(makeArray(speciesPool)));
     });
 
     const nameForCall = this.name.toLowerCase().replace(/\s/g, "_");
@@ -620,10 +617,7 @@ export class TrainerConfig {
       this.setPartyTemplates(trainerPartyTemplates.RIVAL_5);
     }
     signatureSpecies.forEach((speciesPool, s) => {
-      if (!Array.isArray(speciesPool)) {
-        speciesPool = [speciesPool];
-      }
-      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(speciesPool));
+      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(makeArray(speciesPool)));
     });
     if (!isNullOrUndefined(specialtyType)) {
       this.setSpeciesFilter(p => p.isOfType(specialtyType));
@@ -668,12 +662,8 @@ export class TrainerConfig {
 
     // Set up party members with their corresponding species.
     signatureSpecies.forEach((speciesPool, s) => {
-      // Ensure speciesPool is an array.
-      if (!Array.isArray(speciesPool)) {
-        speciesPool = [speciesPool];
-      }
       // Set a function to get a random party member from the species pool.
-      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(speciesPool));
+      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(makeArray(speciesPool)));
     });
 
     // If specialty type is provided, set species filter and specialty type.
@@ -729,12 +719,8 @@ export class TrainerConfig {
 
     // Set up party members with their corresponding species.
     signatureSpecies.forEach((speciesPool, s) => {
-      // Ensure speciesPool is an array.
-      if (!Array.isArray(speciesPool)) {
-        speciesPool = [speciesPool];
-      }
       // Set a function to get a random party member from the species pool.
-      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(speciesPool));
+      this.setPartyMemberFunc(-(s + 1), getRandomPartyMemberFunc(makeArray(speciesPool)));
     });
 
     // Set species filter and specialty type if provided, otherwise filter by base total.
diff --git a/src/field/pokemon-sprite-sparkle-handler.ts b/src/field/pokemon-sprite-sparkle-handler.ts
index cceb0bd7717..c5f57a71a81 100644
--- a/src/field/pokemon-sprite-sparkle-handler.ts
+++ b/src/field/pokemon-sprite-sparkle-handler.ts
@@ -1,6 +1,6 @@
 import { globalScene } from "#app/global-scene";
 import Pokemon from "./pokemon";
-import { fixedInt, randInt } from "#app/utils/common";
+import { fixedInt, makeArray, randInt } from "#app/utils/common";
 
 export default class PokemonSpriteSparkleHandler {
   private sprites: Set<Phaser.GameObjects.Sprite>;
@@ -57,9 +57,7 @@ export default class PokemonSpriteSparkleHandler {
   }
 
   add(sprites: Phaser.GameObjects.Sprite | Phaser.GameObjects.Sprite[]): void {
-    if (!Array.isArray(sprites)) {
-      sprites = [sprites];
-    }
+    sprites = makeArray(sprites);
     for (const s of sprites) {
       if (this.sprites.has(s)) {
         continue;
@@ -69,9 +67,7 @@ export default class PokemonSpriteSparkleHandler {
   }
 
   remove(sprites: Phaser.GameObjects.Sprite | Phaser.GameObjects.Sprite[]): void {
-    if (!Array.isArray(sprites)) {
-      sprites = [sprites];
-    }
+    sprites = makeArray(sprites);
     for (const s of sprites) {
       this.sprites.delete(s);
     }
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 964d66d352e..20e6f11e859 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -41,6 +41,7 @@ import {
   type nil,
   type Constructor,
   randSeedIntRange,
+  makeArray,
 } from "#app/utils/common";
 import type { TypeDamageMultiplier } from "#app/data/type";
 import { getTypeDamageMultiplier, getTypeRgb } from "#app/data/type";
@@ -1774,9 +1775,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     let overrideArray: MoveId | Array<MoveId> = this.isPlayer()
       ? Overrides.MOVESET_OVERRIDE
       : Overrides.OPP_MOVESET_OVERRIDE;
-    if (!Array.isArray(overrideArray)) {
-      overrideArray = [overrideArray];
-    }
+    overrideArray = makeArray(overrideArray);
     if (overrideArray.length > 0) {
       if (!this.isPlayer()) {
         this.moveset = [];
diff --git a/src/plugins/cache-busted-loader-plugin.ts b/src/plugins/cache-busted-loader-plugin.ts
index e5b1abb5903..ba021ce0d11 100644
--- a/src/plugins/cache-busted-loader-plugin.ts
+++ b/src/plugins/cache-busted-loader-plugin.ts
@@ -1,10 +1,8 @@
+import { makeArray } from "#app/utils/common";
+
 let manifest: object;
 
 export default class CacheBustedLoaderPlugin extends Phaser.Loader.LoaderPlugin {
-  constructor(scene: Phaser.Scene) {
-    super(scene);
-  }
-
   get manifest() {
     return manifest;
   }
@@ -14,9 +12,7 @@ export default class CacheBustedLoaderPlugin extends Phaser.Loader.LoaderPlugin
   }
 
   addFile(file): void {
-    if (!Array.isArray(file)) {
-      file = [file];
-    }
+    file = makeArray(file);
 
     file.forEach(item => {
       if (manifest) {
diff --git a/src/scene-base.ts b/src/scene-base.ts
index 430a9bc8aac..51302e7202d 100644
--- a/src/scene-base.ts
+++ b/src/scene-base.ts
@@ -1,3 +1,5 @@
+import { makeArray } from "#app/utils/common";
+
 export const legacyCompatibleImages: string[] = [];
 
 export class SceneBase extends Phaser.Scene {
@@ -88,9 +90,7 @@ export class SceneBase extends Phaser.Scene {
     } else {
       folder += "/";
     }
-    if (!Array.isArray(filenames)) {
-      filenames = [filenames];
-    }
+    filenames = makeArray(filenames);
     for (const f of filenames as string[]) {
       this.load.audio(folder + key, this.getCachedUrl(`audio/${folder}${f}`));
     }
diff --git a/src/ui/pokemon-icon-anim-handler.ts b/src/ui/pokemon-icon-anim-handler.ts
index 253ccbe3623..c1a85c927b1 100644
--- a/src/ui/pokemon-icon-anim-handler.ts
+++ b/src/ui/pokemon-icon-anim-handler.ts
@@ -1,5 +1,5 @@
 import { globalScene } from "#app/global-scene";
-import { fixedInt } from "#app/utils/common";
+import { fixedInt, makeArray } from "#app/utils/common";
 
 export enum PokemonIconAnimMode {
   NONE,
@@ -49,9 +49,7 @@ export default class PokemonIconAnimHandler {
   }
 
   addOrUpdate(icons: PokemonIcon | PokemonIcon[], mode: PokemonIconAnimMode): void {
-    if (!Array.isArray(icons)) {
-      icons = [icons];
-    }
+    icons = makeArray(icons);
     for (const i of icons) {
       if (this.icons.has(i) && this.icons.get(i) === mode) {
         continue;
@@ -66,9 +64,7 @@ export default class PokemonIconAnimHandler {
   }
 
   remove(icons: PokemonIcon | PokemonIcon[]): void {
-    if (!Array.isArray(icons)) {
-      icons = [icons];
-    }
+    icons = makeArray(icons);
     for (const i of icons) {
       if (this.toggled) {
         const icon = this.icons.get(i);
diff --git a/src/utils/common.ts b/src/utils/common.ts
index 56fa3b5c698..6a461aa4917 100644
--- a/src/utils/common.ts
+++ b/src/utils/common.ts
@@ -611,3 +611,10 @@ export function getShinyDescriptor(variant: Variant): string {
       return i18next.t("common:commonShiny");
   }
 }
+
+export function makeArray<T>(input: T | T[]): T[] {
+  if (!Array.isArray(input)) {
+    return [input];
+  }
+  return input;
+}
diff --git a/test/testUtils/helpers/moveHelper.ts b/test/testUtils/helpers/moveHelper.ts
index 1b799e12da7..91f10103905 100644
--- a/test/testUtils/helpers/moveHelper.ts
+++ b/test/testUtils/helpers/moveHelper.ts
@@ -12,6 +12,7 @@ import { UiMode } from "#enums/ui-mode";
 import { getMovePosition } from "#test/testUtils/gameManagerUtils";
 import { GameManagerHelper } from "#test/testUtils/helpers/gameManagerHelper";
 import { vi } from "vitest";
+import { makeArray } from "#app/utils/common";
 
 /**
  * Helper to handle a Pokemon's move
@@ -157,9 +158,7 @@ export class MoveHelper extends GameManagerHelper {
    * @param moveset - The {@linkcode MoveId} (single or array) to change the Pokemon's moveset to.
    */
   public changeMoveset(pokemon: Pokemon, moveset: MoveId | MoveId[]): void {
-    if (!Array.isArray(moveset)) {
-      moveset = [moveset];
-    }
+    moveset = makeArray(moveset);
     pokemon.moveset = [];
     moveset.forEach(move => {
       pokemon.moveset.push(new PokemonMove(move));
diff --git a/test/testUtils/helpers/overridesHelper.ts b/test/testUtils/helpers/overridesHelper.ts
index c01acbe0f2e..cfc19949019 100644
--- a/test/testUtils/helpers/overridesHelper.ts
+++ b/test/testUtils/helpers/overridesHelper.ts
@@ -14,7 +14,7 @@ import { StatusEffect } from "#enums/status-effect";
 import type { WeatherType } from "#enums/weather-type";
 import { expect, vi } from "vitest";
 import { GameManagerHelper } from "./gameManagerHelper";
-import { shiftCharCodes } from "#app/utils/common";
+import { makeArray, shiftCharCodes } from "#app/utils/common";
 import type { RandomTrainerOverride } from "#app/overrides";
 import type { BattleType } from "#enums/battle-type";
 
@@ -202,9 +202,7 @@ export class OverridesHelper extends GameManagerHelper {
    */
   public moveset(moveset: MoveId | MoveId[]): this {
     vi.spyOn(Overrides, "MOVESET_OVERRIDE", "get").mockReturnValue(moveset);
-    if (!Array.isArray(moveset)) {
-      moveset = [moveset];
-    }
+    moveset = makeArray(moveset);
     const movesetStr = moveset.map(moveId => MoveId[moveId]).join(", ");
     this.log(`Player Pokemon moveset set to ${movesetStr} (=[${moveset.join(", ")}])!`);
     return this;
@@ -382,9 +380,7 @@ export class OverridesHelper extends GameManagerHelper {
    */
   public enemyMoveset(moveset: MoveId | MoveId[]): this {
     vi.spyOn(Overrides, "OPP_MOVESET_OVERRIDE", "get").mockReturnValue(moveset);
-    if (!Array.isArray(moveset)) {
-      moveset = [moveset];
-    }
+    moveset = makeArray(moveset);
     const movesetStr = moveset.map(moveId => MoveId[moveId]).join(", ");
     this.log(`Enemy Pokemon moveset set to ${movesetStr} (=[${moveset.join(", ")}])!`);
     return this;