Other Amoral Androids Afflicting Kal and Kara of Krypton

An android of alien origin known as the Chief, created by Vandal Savage, was first utilized as a henchmen when his master joined the Injustice Society and they both battled Hawkman. Following a swift defeat by the Winged Warrior, the Chief was retrieved by his master to be used for another scheme decades later, which involved Kal-L. 

Power Girl also became the prey of the Chief on a robotic world designed by his creator, luring her into a trap whereby Savage leached Kara's superhuman abilities to use against Kal-L in battle. With the aid of their Justice Society comrades, however, Superman and Power Girl defeated both Vandal and the Chief, with the latter left behind on his ravaged world.

Might this Chief android have gained his mental engrams from the displaced mind of the Ultra-Humanite, foe to all Kryptonians in his universe? His first appearance in 1947 (when it assisted Vandal Savage in his bid for conquest as a member of the Injustice Society versus Hawkman) was during the period when Ultra was in seclusion following an earlier defeat in the spring of 1942, when he battled Superman and the All-Star Squadron. 

Later tales elude to a relationship between Savage and Ultra as confederates of crime, and Ultra was the sole known possessor of Brain emulation technology. Additionally, Vandal needed a high-level genius to assist him in designing Colu-Two and its artificial suns, which the Humanite would eagerly assist to satisfy his thirst for revenge against his arch-enemy.

Another android who plagued Superman and Supergirl was Pulsar Stargrave, a synthetic being thought to have been the 30th century version of the android Brainiac of Colu-One. Possessing the ability to project massive amounts of light, heat and immense energy, Stargrave proved a formidable foe to all he opposed.

Pulsar grew his reputation by defeating both the Time Trapper and Mordru, thought to be the most powerful entities of their era. Presenting himself as the long-lost  father of Querl Dox aka Brainiac Five into recruiting his fellow Legionnaires into joining him on battling a galactic threat. Eventually, Stargrave’s true scheme was revealed, as he sought to be unchallenged in his galactic supremacy. While battling Superboy and the Legion of Super-Heroes, the teen team were able to overpower him and throw him into Colu's sun. 

Pulsar would return and would attempt to sway Querl into joining him, claiming to be the adopted great-great-great-grandfather to the boy genius, as Brainiac raised Querl's ancestor Vril in the 20th century. Once more, he was outwitted and was thought to be destroyed, although this would not be the case.

Stargrave returned one final time, when he employed Computo drones into attempting to annex planet Bismoll into his rule. On that occasion, Bismoll’s Legion member Matter-Eater Lad along with the Legion of Substitute-Heroes defeated Stargrave and his minions.