Brainiac's legacy was revealed in "Action Comics" #276 (May 1961), in a "Legion of Super-Heroes" back-up story. This story introduced a green-skinned, blond-haired teenager named Querl Dox (Brainiac 5), who claimed to be Brainiac's 30th-century descendant. Unlike his ancestor, Brainiac 5 used his "twelfth-level intellect" for the forces of good and joined the Legion alongside Supergirl, with whom he fell in love. His home planet was given variously as Bryak, Yod, Yod-Colu, or simply Colu.20th century Colu is a rim world found on the approach to the Magellanic Clouds.