Kryptonian service robots are small non-humanoid robots created on the planet Krypton. The most well-known robot is Kelex. Kelex was once the personal service robot of Jor-El and later his son, Kal-El. In later years, Kelex was programmed to assist John Henry Irons and his niece Natasha. Another service robot from Krypton's pre-Cataclysm era was named Kelor. Like Kelex, Kelor was in service to the House of El.
- See also: Superman Robot
Each service robot is composed of an advanced alloy endoskelton which covers its head, torso and limbs. The robots are capable of limited directional flight, so they do not require legs for locomotion. A techno-organic memory cluster is located in each unit's secondary torso. A service robot has two arms, each one possessing two multi-jointed tactile probes. The mechanics of the robot's head consists of a central processing unit, a personality interface, a laser holographic imager and a pan-spectral ocular array.