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Kajz Dox (Pre-Zero Hour)

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Kajz Dox aka Brainiac 4 is a brilliant scientist hailing from the planet Colu. He is father of the famed super-genius Brainiac 5 (Querl Dox). Kajz Dox dies on the planet Colu when his son Brainiac 5 is still a young boy. Pulsar Stargrave once claimed to be the father of Brainiac 5, but this is later proven false. The death of his father is one of the main reasons he joins the Legion of Superheroes.


  • Genius Level Intellect: Like all members of the Brainiac family, possesses a superior intellect, on the order of a 10th-level intellect.[1]



Legion Flight Rings
This character is exclusive to the continuity of the Supergirl and the Legion of Super-Heroes and 5th Legion of Super-Heroes series.

Any official designation for the home universe for this character has not been given, and thus this page may have to be moved in the future.
In the meantime, it's conjecturally designated as "New Earth".

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