Biolizard

Biolizard is the prototype to the Ultimate Life Form. He was created by [Gerald Robotnik](https://anilist.co/character/14753) to be an immortal creature, but instead Biolizard was locked away by G.U.N. He eventually was released, and it was revealed that Gerald had used him in a plan to destroy Earth. [Sonic the Hedgehog](https://anilist.co/character/2882) and [Shadow the Hedgehog](https://anilist.co/character/6379) eventually stopped Biolizard using the power of the Chaos Emeralds.