The white sheep of the Other Railway clan. Derek is kind, polite and an overall gullible prat, which you'd assume would make him one of the more sympathetic engines among the locals. Too bad he has the worst cooling system ever devised by human minds. Derek has broken down more times than any engine on ride British rails. Ironically often found pulling the Breakdown Train. Has a big nose. Seriously, look at it. It's like a beach ball with nostrils.