In this same story, Luthor discovers the Computer Tyrants could have given their robot villain a twelfth-level intellect but only gave him a tenth-level, the same as them, so he would not dominate them. Luthor frees Brainiac from imprisonment and increases his intellect to a twelfth-level one. He also implants a device to temporarily disable him or destroy him if necessary. The two join forces, but Brainiac later removes the device and blocks out Luthor's memory of his inner workings and the fact that he is a machine. This story becomes the first of many Brainiac/Luthor team-ups. Meanwhile, Vril Dox leads a revolt against the Computer Tyrants, eventually destroying them and freeing Colu. Brainiac sees a monument to this when he returns to Colu later on.