Kell-Ur was a Kryptonian who was genetically engineered on the planet Krypton. He grew up and became a close friend and romantically involved with Kara Zor-El, both joining a Space Program initiated by the Law Council to populate other planets in the universe. Kell and Kara were both on the same expedition headed by Kara and Kell and another member of the expedition, Dev-Em, paired off to go find a beacon on their trial task. Dev-Em murdered Kell so that his chances of making the Space Program were greatly enhanced.
- Man of Steel Prequel (First appearance)