Sean is Leela's ex-boyfriend. While he and Leela were dating, he used to play his saxophone naked on her couch (Until Leela found someone else's couch fibers on his butt, which she explains in "The Devil's Hands Are Idle Playthings"). Leela maintains that the break-up was mutual, although it is apparent that he dumped her and this fact is explicated when she meets his wife Darlene when Leela and Fry are tricked into visiting a resort which turns out to be a Zoo habitat on the planet Simian 7 just after Sean and Darlene. Sean is a musician who "jazz noodles" on a saxaphone with a 20-year-old reed which Fry damages when trying to start a fight with him. He once recorded a demo and shot a video, but then he lost his phone. Despite being remembered fondly by Leela for his musicial ability, he's revealed not to be a nice guy at all and clearly doesn't remember his relationship with Leela as fondly, describing her as crazy and upsetting her.
He and Darlene met at the 99-cent store.
- "Why Must I Be a Crustacean in Love?" (mentioned only)
- "Love and Rocket" (mentioned only)
- "The Devil's Hands Are Idle Playthings" (mentioned only)
- "Fry and Leela's Big Fling" (first appearance)