Sean-Ben Pimento is a celebrity chef who appears in the Season 7 episode entitled Chili Cook-Off. He is asked to be a guest judge at the Park Managers Annual Chili Cook Off.
The competition is judged by celebrity chef, Sean-Ben Pimento. Pimento seems to like Benson's chili, but as Rigby points out, he also likes Gene's, Benson asks Mordecai and Rigby to get some of Gene's chili, and they do, loving the spicy and sweet taste with hints of lavender, Benson tries the chili himself and realizes one of Gene's ingredients is the Jade Phantom Pepper.
Pimento names the 2 finalists as Gene and Andrew Aaronson, but it is discovered Aaronson's chili ingredients cost $51.20, breaking the $50.00 limit for the competition and getting Aaronson disqualified, Pimento names Benson as the replacement finalist, but when Benson tries to expose Gene, he is humiliated since he has no evidence.
His character could be loosely based on of Heston Blumenthal seeing as they look similar and are both celebrity chefs.