diff --git a/src/data/abilities/ability.ts b/src/data/abilities/ability.ts
index 120d1d413c4..bc9084ea7f2 100644
--- a/src/data/abilities/ability.ts
+++ b/src/data/abilities/ability.ts
@@ -3903,7 +3903,12 @@ export class PostSummonTransformAbAttr extends PostSummonAbAttr {
     const targets = pokemon.getOpponents();
     const target = this.getTarget(targets);
 
-    if (target.summonData.illusion) {
+    //Prevents Imposter from triggering on a transformed target or if the user is already transformed
+    if (pokemon?.isTransformed() || target?.isTransformed()) {
+      return false;
+    }
+
+    if (target?.summonData?.illusion) {
       return false;
     }
 
diff --git a/src/data/moves/move.ts b/src/data/moves/move.ts
index f94c59bb463..7d3fc253da7 100644
--- a/src/data/moves/move.ts
+++ b/src/data/moves/move.ts
@@ -7616,7 +7616,6 @@ export class TransformAttr extends MoveEffectAttr {
 
     globalScene.phaseManager.unshiftNew("PokemonTransformPhase", user.getBattlerIndex(), target.getBattlerIndex());
 
-    globalScene.phaseManager.queueMessage(i18next.t("moveTriggers:transformedIntoTarget", { pokemonName: getPokemonNameWithAffix(user), targetName: getPokemonNameWithAffix(target) }));
 
     return true;
   }
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index e9cc4f70d70..deeffd736e8 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -1062,6 +1062,10 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     return species;
   }
 
+  isTransformed(): boolean {
+    return this.summonData.speciesForm !== null;
+  }
+
   /**
    * @param {boolean} useIllusion - Whether we want the fusionSpeciesForm of the illusion or not.
    */
diff --git a/src/phases/move-phase.ts b/src/phases/move-phase.ts
index 2e94b085948..0deb1c6f470 100644
--- a/src/phases/move-phase.ts
+++ b/src/phases/move-phase.ts
@@ -339,6 +339,17 @@ export class MovePhase extends BattlePhase {
       this.showMoveText();
     }
 
+    if (
+      //Prevent using Transform if either the user or target is already transformed
+      this.move.getMove().id === MoveId.TRANSFORM &&
+      (targets[0].isTransformed() || this.pokemon.isTransformed())
+    ) {
+      this.showMoveText();
+      this.showFailedText();
+      this.end();
+      return;
+    }
+
     // Clear out any two turn moves once they've been used.
     // TODO: Refactor move queues and remove this assignment;
     // Move queues should be handled by the calling `CommandPhase` or a manager for it