The Brood are the Universe's first natural predators, spawned on a dark galaxy prior the emergence of Galactus from his incubator. Their planet of origin is unknown, but such is their relentless evil, legend holds that the Brood originated not through natural evolution, but in otherworldly sorcery. In this galaxy they found certain large space-dwelling creatures that they decided to use as living starships to infest neighboring star systems and initiated a intergalactic campaign to build a fearsome empire. These space-dwelling creatures included the whale-like Acanti, and the shark-like Starsharks.