An alien that was experimented on and eventually escaped. His legs and tail were replaced with prototype prosthetic ones.
He is self conscious about his new height as his race is generally shorter. The jacket is probably important to him?
More information might be added if it ever gets to that point lol.

The iris of his eye takes up a large portion of the eye, the sclera isn't usually super visible. (Like a dog's but just a bit smaller iris)
Original design by pitterpatter