Karl Greene is a young adult and has absolutely no confidence. Unless he's cooking then stay out of his way he's in charge. Karl is supposed to be a very meek and nerdy character his character is very tall and lanky. If you have a voice that you think will fit. He's a real gentle giant. I really don't have a voice in mind for this one, aside from what i said before so it's open to interpretation. Yes, I do plan to have him sing.