Spider-Cat and Cat-Pool

Peter Purrker, a furry housecat, is a normal cat. Up until one night, as he waiting for his owner to return, he gets catnapped. He is tossed in genetic experimentation with Wade Whiskers, a streetcat. Their friendship blooms as they try to survive the hostile environment of Weapon X

basis for characters owned by marvel (most)
Cover from KiKai at deviantart, because I can in no way draw something like that (yet)