If you want verity to change his face without him duplicating, instead of making another ball/wall or whatever blueprint it is, select verity and add another layer, then draw that face and make it so in logic it goes: When: This is created, Make layer [Hidden] For layer (the layer with the face). And do: When:this collides with: (tag of plushie): Make layer [Visible] For layer (layer of the face).
Hope this helped!