You may be searching for:
- Shadow the Hedgehog - Referred to as the Ultimate Lifeform.
- Biolizard - Referred to as the prototype of the Ultimate Lifeform.
- Emerl - Referred to as the Ultimate Weapon.
- Shadow Android - a robotic copy of Shadow.
- Eclipse the Darkling - a Black Arms soldier in the Archie Comics.
- Archie Sonic Universe Issue 4 - Story title is "The Ultimate Lifeform!"