Lee is the son of Leon. He has his father's appearance but he has yellow eyes.
Lee is one of the more witty members of the Titans. He enjoys to tease his fellow teammates (especially Aqualad), and takes pleasure in annoying his teammates. He can be a little short tempered though (especially at his brother). His greatest pet peeve is when people mess with his tail. Diesel gets annoyed when he flings his tail or is disrespectful such as kicking his feet up on a supercomputer. He is a bit arrogant and cocky though. He does care about his friends and is very protective of his younger friends.
He fights using a blaster.
Trivia:
Lee is named after his father.
Lee mentions his mother was a thorny devil bar girl.