I'd be a Raptor-Rex, never heard of it? It's a Raptor that rides a T-Rex with a whip and, has a cowboy hat on. I think they had one in the first jurassic park movie.
People always stop at T-Rex, but are we forgetting the Spinosaurus? Honestly, with that beak and sail, one of the more formidable when going up against the T-Rex in combat.
I would be raptor just to walk around terrorising people or if I wanted to go stealth I can actually get into a building through a door without having to smash through the wall.