Reuben is a pig-like character who has appeared in 5 episodes total though only 3 of those as an actual antagonist. In the Party Cruise, he tricked Mung Daal, Chowder and Shnitzel into boarding a ship which he stole. He was the cooking instructor in Certifrycation Class. He tricked the gang into being his servants by planting his rat friend in his sandwich in The Rat Sandwich. He also made a brief appearance in Grubble Gum buying screams. He apparently dislikes Mung Daal. The feeling is mutual. He is a major antagonist of the show. Reuben is voiced by Paul Reubens.