Long before Dr. Eggman showed up, Abyss was a fearsome and renowned pirate. She eventually joined the Eggman Empire as the Egg Boss of the Southern Oceans Egg Army and benefited greatly from her new resources, allowing her to continue her plundering with an entire armada.
She was summoned by Dr. Eggman to help reclaim Eggmanland from the Naugus Twins and the Witchcarters. She was paired up with Battle Lord Kukku XV in order to shut down Eggmanland's backup generator. However, they were ambushed by Dark Gaia Creatures, and Abyss attempted to hack into the system before the Battle Lord blew up the generator. After partaking in the battle for Eggmanland, Abyss went back to her base, ordering her crew to preapre for a raid. (SU: #83, #84, #85, #86)