Look, Jess can mention a new guy who's a robot, but that does not prepare Clint for actually being approached by Legion. He was thinking, y'know, something more along the lines of "looks humanish, speaks normally (if a bit stilted)", not... well, Legion.

"Uh," he says. "Thanks. What the hell are you?"

He doesn't mean it badly, he's just not sure what to think.