Fleb

Fleb was a member of the alien nudist scammers and one of the main antagonists in.

Biography
While little is known about his past, he and his two companions have apparently been scamming people for a long time. When the Planet Express crew arrives at their planet, they seize their chance to scam them. They have scam them out of their money and gain control of their firm. It is then they discover the key to the time sphere on Fry's buttocks, and use it to travel back in time to steal valuables from Earth.

With the money gained from the valuables, they buy the planet. And thus they build a fleet of remote control solid gold Death Stars. But the Earthlings strike back, and soon all is lost, and their final triumph card, the doomsday device, is also out of their hands, and destroys them all except Nudar, who survived the blast but is later killed himself.

Trivia

 * Fleb's name is never mentioned in the film, though he is refered to as such in the available script draft and concept art.
 * Fleb is one of the very few non-animal characters voiced by Frank Welker.