Sheen lost his Parents by a Car Accident and his Grandpa taked cared of him then. After the Kraang Attack he was on his own cause his Grandpa got caught by the Kraang. He escaped but got in Contact with the Mutagen and he turned into a Turtle. He thought his Life is ruined but then he got founded by a Mutant Group and everyone was nice to him. Now he is a physician assistant and can help his Team the best he can. ALso he can heal himself in a Fight and others, but by serious Wounds he needs still help to fix them. He has no Muscles yet, but he gets trained by his Team. Sheen finally found a new Family who cares for him and he cares for them.