===Pre-
Zero Hour/Post-
Infinite Crisis=== The
Silver Age version of Brainiac 4 is Kajz Dox, the father of Querl Dox (
Brainiac 5). Kajz dies on the planet
Colu when Querl is still a young boy. After the events of
Infinite Crisis and the
Legion of Super-Heroes continuity reverting to history similar to that of the Legion before the events of
Zero Hour, Brainiac 5's immediate ancestor Brainiac 4 is again shown to be a male. He had taken the name Brainiac 4 after 1,000 years to reclaim the name as something that could be admired.
Post-Zero Hour The second Brainiac 4 first appears in
Legion of Super-Heroes #107 (August 1998), where she is revealed to be leader of the
Dark Circle and the mother of Brainiac 5. From her birth, she suffered from a lack of emotion, even abandoning her son at his birth in an attempt to find something emotionally stimulating. Living a variety of lives, from beggar woman to hero to gambler, she eventually becomes the leader of the Dark Circle and finds something that caused her to feel emotion: sending an entire fleet to its death. Eventually, her son finds her, only to have Brainiac 4 try to kill him in the expectation that, if killing strangers caused her to feel good, killing her son will make her feel better. After being stopped by
Gates, she is committed to an asylum. Following the
Mark Waid reboot, Brainiac 5's mother is not a villain. She briefly appears as one of a number of Coluans suffering from a sickness that reduces their mental abilities as part of an attack on the
United Planets. ==In other media==