Peridot is a green gem, with her gemstone on her forehead. In the TV show, Steven universe, she is a member of the Crystal Gems and has metal powers, but cannot shapeshift and possibly not fuse.
Press 1: Shoots a series of metal bars
Press 2: Creates a slanted metal wall in front of the player
Press 3: Levitates the player on a trashcan lid for 5 seconds (you can fly around!)
Press 4: Hurtles a metal block