Ultimate Behemoth Owner Maker Use First Appearance The Ultimate Behemoth is a type of RV similar to that of a double-decker bus, but the steering wheel is on the top floor. It features a big screen TV, its own satellite, an elevator, 4 deep fryers (one for each part of the chicken), along with various other features. It was being sold at Bob's RV Round-Up. Homer and the children were impressed, but Marge worried the expensive price on the RV.