Mew is a feline (just as its name implies, as Mew literally means mew and meow, both sounds emitted from a cat) creature, but contains the genetics of all Pokemon...since Mewtwo is technically Mew, assuming this from the cloning process, we can deduce he's like the aforementioned Pokemon. o.o; So I say his physical appearance was supposed to be like a cat, rather than an alien. I can understand why he'd be considered an alien; his characteristics remind me much of a humanoid/mutant. I might be wrong, of course. XP