diff --git a/play.pokemonshowdown.com/src/battle-animations.ts b/play.pokemonshowdown.com/src/battle-animations.ts
index 18f44921a..a42cf99fd 100644
--- a/play.pokemonshowdown.com/src/battle-animations.ts
+++ b/play.pokemonshowdown.com/src/battle-animations.ts
@@ -829,8 +829,11 @@ export class BattleScene implements BattleSceneStub {
 				if (textBuf) textBuf += ' / ';
 				textBuf += pokemon.speciesForme;
 				let url = spriteData.url;
+				var placeholderSprite = spriteData.isFrontSprite // Pet Mods placeholder sprites
+				? "https://play.pokemonshowdown.com/sprites/gen5/substitute.png"
+				: "https://play.pokemonshowdown.com/sprites/gen5-back/substitute.png";
 				// if (this.paused) url.replace('/xyani', '/xy').replace('.gif', '.png');
-				buf += '<img src="' + url + '" width="' + spriteData.w + '" height="' + spriteData.h + '" style="position:absolute;top:' + Math.floor(y - spriteData.h / 2) + 'px;left:' + Math.floor(x - spriteData.w / 2) + 'px" />';
+				buf += '<img src="' + url + '" width="' + spriteData.w + '" height="' + spriteData.h + '" style="position:absolute;top:' + Math.floor(y - spriteData.h / 2) + 'px;left:' + Math.floor(x - spriteData.w / 2) + 'px" onerror="this.src=\'' + placeholderSprite + '\'"/>';
 				buf2 += '<div style="position:absolute;top:' + (y + 45) + 'px;left:' + (x - 40) + 'px;width:80px;font-size:10px;text-align:center;color:#FFF;">';
 				const gender = pokemon.gender;
 				if (gender === 'M' || gender === 'F') {
diff --git a/play.pokemonshowdown.com/src/battle-dex.ts b/play.pokemonshowdown.com/src/battle-dex.ts
index edba35147..1ada85ee4 100644
--- a/play.pokemonshowdown.com/src/battle-dex.ts
+++ b/play.pokemonshowdown.com/src/battle-dex.ts
@@ -533,14 +533,14 @@ const Dex = new class implements ModdedDex {
 		let resourcePrefix = Dex.resourcePrefix;
 		let spriteDir = 'sprites/';
 		let fakeSprite = false;
-		let modName = modSpecies.spriteid;
-		let id = toID(modName);
-		options.mod = this.getSpriteMod(options.mod, id, isFront ? 'front' : 'back', modSpecies.exists !== false);
+		let modSprite = modSpecies.spriteid;
+		let modSpriteId = toID(modSprite);
+		options.mod = this.getSpriteMod(options.mod, modSpriteId, isFront ? 'front' : 'back', modSpecies.exists);
 		if (options.mod) {
 			resourcePrefix = Dex.modResourcePrefix;
 			spriteDir = `${options.mod}/sprites/`;
 			fakeSprite = true;
-			if (this.getSpriteMod(options.mod, id, (isFront ? 'front' : 'back') + '-shiny', modSpecies.exists !== false) === '') options.shiny = false;
+			if (this.getSpriteMod(options.mod, modSpriteId, (isFront ? 'front' : 'back') + '-shiny', modSpecies.exists) === '') options.shiny = false;
 		}
 
 		const species = Dex.species.get(pokemon);
@@ -667,7 +667,7 @@ const Dex = new class implements ModdedDex {
 		}
 		
 		let fakeAnim = false;
-		if (fakeSprite && window.ModSprites[id][options.mod].includes('ani' + facing)){
+		if (fakeSprite && window.ModSprites[modSpriteId][options.mod].includes('ani' + facing)){
 			fakeAnim = true;
 			animationData[facing] = {};
 			animationData[facing].w = 192;
@@ -722,7 +722,15 @@ const Dex = new class implements ModdedDex {
 			spriteData.h *= 1.5;
 			spriteData.y += -11;
 		}
-
+		// Placeholder sprites for Pet Mods Fakemons with no sprite data
+		// window.modsprites[modSpriteId]: checks if it has custom sprite data.
+		// window.BattlePokemonSprites[modSpriteId]: checks if it is a real Pokemon.
+		if (!window.ModSprites[modSpriteId] && !window.BattlePokemonSprites[modSpriteId] && pokemon !== 'substitute') {
+			spriteData = Dex.getSpriteData('substitute', spriteData.isFrontSprite, {
+				gen: options.gen,
+				mod: options.mod,
+			});
+		}
 		return spriteData;
 	}
 
@@ -1397,4 +1405,4 @@ if (typeof require === 'function') {
 	// in Node
 	(global as any).Dex = Dex;
 	(global as any).toID = toID;
-}
+}
\ No newline at end of file