Biolizard

Biolizard is the prototype to the Ultimate Life Form. He was created by Gerald Robotnikhttps://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 Hedgehoghttps://anilist.co/character/2882 and Shadow the Hedgehoghttps://anilist.co/character/6379 eventually stopped Biolizard using the power of the Chaos Emeralds.