Pip (Chrono Cross)
From Multiversal Omnipedia
Pip is an evolution monster created by Dr. Luccia in the alternate timeline. Resembling a small plush doll, it evolves into angelic or demoniac forms depending on the elements it uses and the experiences of its allies and enemies. The angel can further evolve into an archangel, the devil can evolve into an archdevil, and either can evolve into an archetype, depending on its experiences after this.