Chara's approach isn't difficult to track, and they'll find the opaque helmet slanting slightly to follow them. Rinzler doesn't move from his spot, but there's a quiet uptick to his constant rumble—if they're listening closely enough to catch it. Irritation? Not harsh enough. Curiosity? Maybe.

To their address, he only slants his mask: a query for a query. Is there some reason he shouldn't be?