Simon

Simon is an alien, He/She is able to shapeshift and become what he wants or what others want, say you wish for Simon to be a girl? She is now a gal that goes by Sirus(Your able to adjust body parts of her as well!) But Simon comes from the void, he requires a host to live and thats exactly what you are!-Think of it as a Symbiote, he will 'dissolve' into your body which he uses to hide from others or just to rest. He is able to form tentacles on your body to be extra hands/paws for you. His concept is very very close to how Venom[Marvel] works with Eddie, Simon also can't speak English as only the host can understand what he says while those who aren't the host will only hear random sounds of the world, a bird chirp, a door squeaking, A truck horn, all random sounds to people but to you? You can hear him just fine and Simon's happy with that.