I took a test on a movie website and it told me the best boyfriend for me would be T-800, also known as The Terminator. Cause he is cold, looks like a man and thinks like a computer.
I consider it as some kind of warning, don't be a cold bitch to your neighbour.
But one good thing is, he can be whoever you have a crush on!
Arnie fixes his artificial skin a lot (yeah, a bodybuilder who opens his own arm is an interesting thing to see, ouch...), but actual shapeshifting does not appear until the fifth part, and even then he is not the being that fully changes its appearance. It's T-1000 that can fully disappear (and I would say it becomes a bit too simplified this way).
Well, of course taking your skin off is easier when you are a machine, so yes, even T-800 could change physically more than a human being in similar situation.
The good thing is that a human being can change mentally more easily than an android at the same place. At least I hope so.