Colu
From superman.nu: Supermanica
Colu
A planet inhabited by green beings of human appearance and the master computers and technology they have built. Colu is the homeworld of the evil computer menace Brainiac, as well as Brainiac II (Vril Dox)), the humanoid who leads the revolution to take control of the planet away from the master computers during Brainiac's absence in space. Dox is the ancestor of Brainiac 5 of the 30th century (S No. 167, Feb 1964: "The Team of Luthor and Brainiac!"; many others).
