"No good. Too bad, dude. I'm- uh," he hesitates. It would probably be rude to introduce himself by codename after he asked Liir for his own real name, but he goes by Beast Boy for a reason. He settles on a compromise. "I'm Gar, but call me Beast Boy. I wasn't big on family history back when they were around. I knew home was America, but it wasn't like I'd ever been here, you know? And I have no idea if they lived their whole lives here, or moved in, or what."

Talking about his parents is bringing up feelings in him that he'd sooner not deal with, but snubbing this guy isn't really an option. Anyway, he didn't miss that Liir spoke of his own mother in the past tense, too.