Querl Dox is Brainiac 5. His
ancestors, a green-skinned
race, live on a
world where
computers became smarter than men. The computers conquered the
inhabitants of that
planet and built a computer in human form to
conquer the
galaxy. This was
Brainiac, one of
Superman's foes.
The computers took a boy from the planet and renamed him Brainiac II. This was
Querl Dox's great-great-grandfather, Vril Dox. Vril learned some of the computers
secrets and boosted his own intelligence to become greater than that of the
computers. He then led a revolt of the people against the computers.
Vril Dox's enhanced intelligence was passed on through his genes, so that
the subsequent generations were equally as smart as he. His great-great grandson,
Querl Dox, joined the Legion of Super-Heroes. Apart from his great intellect,
Brainiac 5 also brought to the Legion his inventions including the Legion flight ring.
Brainiac 5 was romantically involved with Supergirl.