Chas is a horrendously over-weight caterpillar who bullies Karl, tries to pick on Karen, but who wouldn't dare to touch Phil.

If you're looking for a secret-agent, prize-fighter and skate-boarder rolled into one, Chas unfortunately isn't it.  The rare occasion of Chas getting up off the sofa, is generally to sign on, before returning to the sofa to do battle with his PlayStation.

First impressions of Chas would be: unwashed, irritable and incredibly stupid.  Unfortunately this won't change when you get to know him.