Brainiac 5 is a descendant of Brainiac and a member of the Legion of Superheroes.
A Coluan from the 31st Century, Querl Dox is a founding member of the Legion of Superheroes, one of the most intelligent beings ever existed and a heroic time-traveller. He supports his team with his many inventions, and always tries to redeem his name from the atrocities committed by his ancestor.
Injustice: Gods Among Us
In Ares's ending, Ares forces him to create a world at constant war.
When Brainiac is defeated by "another Brainiac", this one reveals himself as a disguised Brainiac 5, a time-travelling descendant from the 31st Century, come to the past to prevent his ancestor to commit all the monstrosities that caused their name to be feared in every galaxy. Back to his time, Brainiac 5 is put on trial by his friends of the Legion, but he's found innocent as his loyalty lays with his team.
Powers and abilities
Brainiac 5 is impossibly intelligent, a genius in any known field of science and a superb inventor. His Force Field Belt allows him to create impenetrable barriers, while his Legion Ring allows him to fly.