Ava just smiles innocently. She likes to figure out these types, their potential as a threat. To her, to the ship.

"Ah, well we're surrounded by quite a lot of it," Ava points out the obvious, curious if there's any limitations on his abilities. Naturally, or enforced by the Captain's control.

"Does that make you a mutant? You look normal enough." But she knows enough about genetics to know mutations are rarely so obvious as tentacles or an extra head.