Brainiac 5 (Querl Dox) is a fictional character who exists in the 30th and 31st centuries of the DC Universe. He is a long standing member of the Legion of Super-Heroes. Brainiac 5 is from the planet Colu. He first appeared in name in Action Comics #276 (May 1961), although his likeness appears in a single panel in Adventure Comics #247 (April 1958).
Read more about Brainiac 5: Powers and Abilities