Their leaders do not tolerate dissent and arrested Gastro, Gordon, Godfrey, Gideon, Gary, and Gus for becoming vegetarians and training as plumbers. The six birds escaped prison and hid on Atlantos. The bactrosaur Janice persuaded all of them (except for Gastro) to become carnivores again and hatched a plot to take over Atlantos for the carnivorous terror birds, but all of the evil birds were defeated by Teggs, Arx, Gipsy, Iggy, and Gastro.