Morby has Morshu's face and Kirby's body and inherited Morshu's obsession with bombs. In fact, due to some kind of speech impediment, his entire vocabulary consists of the word "bombs." For some reason, he also really likes fire and tries to surround himself with it, whether by going to fiery places or setting things on fire himself.
Morby's habit of singing about bombs has gotten him in trouble whenever he has tried flying on an airplane, and after 9/11, he was placed on many countries' no-fly lists. Wanting revenge, Morby has since worked with terrorist groups like Squad Allah and P.I.N.G.A.S.