|This character exists primarily or exclusively within the Post-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
A number of Piranhas and other Badniks were left behind on Isolated Island following a thwarted operation of Eggman's, and were modified by Dr. Ellidy to help him maintain and protect his property on the island.
Spark of Life
After the local Lake of Rings produced a Red Star Ring, Ellidy had his Piranhas monitor it. When the evil computer virus Phage infiltrated Ellidy's systems, she took control of all the Badniks to aid in her attack. Several Piranhas were charged with guarding the island's Lake of Rings, and tried to prevent Tails and Big the Cat from obtaining the Chaos Emerald that had landed in it. They then joined the Badniks and the Dark Gaia Creatures attacking the pair, but were later freed by Phage's defeat.
- The Piranha is based on the piranha-based Badnik of the same name that appeared in Knuckles' Chaotix.