After he was given the technology that kept him alive, Cyborg realized that with its telecommunication he could keep a constant watch on every superhuman on Earth. However, aware of the invasion of privacy, he refused to consciously hunt for information, leaving secondary cybernetic systems to passively compile information. He began to refer to the software that curated these secondary systems as "the grid".
The software grew, and developed into a neural network, with behavioral quirks copied from the viruses and hackers it encountered. It was shepherded into full sentience by Atomica, who used it to steal all the data of the Justice League's adventures. When she betrayed the heroes to the Crime Syndicate (Earth 3), she brought it with her onto the villain team.
The machine mind, now christened "Grid", stole Cyborg's cybernetic prostheses to make a body for itself and went to join the Crime Syndicate in exchange for their promised help in achieving its ultimate goal: emotions, which were the one thing Victor Stone had that it could not replicate.
Grid served the Crime Syndicate in their scheme to take over the world, acting as a datahub. He was instrumental to their plan, to take over the global telecoms infrastructure one city at a time, during a worldwide blackout that the group had engineered.
He was eventually stopped by Victor Stone, who had been given new prostheses by his father, and who attacked with the aid of the Metal Men, a gang of non-networked robots. The group appealed to Grid's nascent ego, causing him to disconnect from wireless contact to fight them, after which they seemingly killed him.
The Darkseid War
However, Grid survived, hidden inside Cyborg's systems once again. When the surviving members of the Crime Syndicate teamed up with the Justice League to end a conflict between Darkseid and the Anti-Monitor, Superwoman reactivated Grid to strengthen the Syndicate's side of the alliance. Grid was able to take advantage of changes to the nature of Victor Stone's cybernetics and made Victor become him. Grid assisted the combined group, but at the end of the adventure, his allies were dead, except for Owlman, who had Grid download himself into the Mobius Chair. Owlman and Grid are then seen talking to Metron when a powerful force attacks and seemingly kills him.