Duke Devlin is a side character in the second season of Yu-Gi-Oh: The Abridged Series. He was introduced in Episode 22 - Shine On, You Crazy Devlin, as the creator of Dungeon Dice Monsters, as well as the owner of a game shop opposite Solomon Muto's. He is always accompanied by a background theme music in the form of Justin Timberlake's "SexyBack"(Duke apparently can't hear this, or it's followed him around so much that he's used to it) that plays whenever he speaks or makes an entrance. Throughout the series, he is the most praised by the fangirls, and even has a small group that cheers him on in Shine On, You Crazy Devlin. Despite being the most attractive of the cast, he seems to have no qualms about obtaining sex however he wants, commenting about his desire to rape the unconscious Mai Valentine during the Battle City arc and protesting that he can't possibly be the only one thinking about doing it, and saying he has a disease where he needs naked girls applied to him.

Devlin created Dungeon Dice Monsters and idolized Pegasus for possibly publishing his game. He becomes irritated when people point out that it's little more then a rip-off of Duel Monsters despite the fact his only defense when asked about the diffrences between the games is the his has dice.