Dave's a friend of mine. Human, light hair, wears a pair of shades all the time, dresses in all red and has a cape?

[It's a vague description but it's the only way he knows how to describe a human to another human. What even are terms like 'blond' or 'sunglasses'?]

Me? I'm Karkat. Karkat Vantas. [A pause as he looks over the other.] And same goes for you, who the hell are you?