Kelex was a medical attendant on the planet Krypton, created in order to serve the House of El. When Krypton was destroyed, another Kelex was in the Fortress of Solitude located on Earth. Kelex only responded to the blood of the House of El; when Cyborg Superman obtained the blood of Supergirl, Kelex gave him the information on Project Medusa and was controlled to eliminate Supergirl. Supergirl had no choice but to destroy the robotic assistant. However, Kelex appears rebuilt later.
- This version of the character is exclusive to the continuity of the television series Supergirl and is an adaptation of Kelex. The original character was created by John Byrne and Mike Mignola and first appeared in World of Krypton (Volume 2) #3.
- 9 Appearances of Kelex (Arrow: Earth-38)
- 1 Images featuring Kelex (Arrow: Earth-38)
- 1 Quotations by or about Kelex (Arrow: Earth-38)
- Character Gallery: Kelex (Arrow: Earth-38)
Superman Family member