It's a stare that's equally returned, presumably, given that his eyes are obscured. He's quite serious. She'd asked him and he'd given her an answer. It's not his fault she expects it to be expounded upon.

The slight lowering of his shoulders seems to suggest a sigh, but he raises his hands to his helmet then, lifting it from his head to reveal a head of black metal. His optics were bright, burning like lights in a stylized skull.

"An advanced construct. A robot, if you are familiar with the term."