A game where you play as a robot, preferably with lots of customization

I've been interested in a game where you play as a robot of some kind. And, of course, one with lots of customization. Preferably the character looks like a robot and not just "a human with maybe a mechanical bit or two attached". A good example of the latter would be 2b from Nier: Automata. That game is great but not exactly what I am looking for.