RoboCop versus The Terminator is a four-issue comic book crossover limited series published in 1992 by Dark Horse Comics. It was written by Frank Miller and drawn by Walt Simonson. Details that were cut out of both the scripts that Frank Miller wrote for RoboCop 2 and RoboCop 3, mainly the detail on RoboCop's brain, were used in the story.
Using elements from both the RoboCop and Terminator universes, the comic book series puts its own spin on proceedings by having Skynet send three Terminators back in time to Detroit to protect a burnt out RoboCop from a lone human soldier (also) sent back to destroy him.
Eventually discovering that the technology used to build him is partly responsible for the future development of Skynet, RoboCop soon sets upon himself to take down Skynet in the post-apocalyptic future single-handedly. Part of the story focuses on his mind, the only part left of him, hiding and moving throughout Skynet's systems, fighting back as best he can.
Robocop's human consciousness (Alex Murphy) waits for decades in hiding deep within Skynet's "consciousness" avoiding detection as the slaughter of humanity takes place. He waits for the opportunity when Skynet's attention will be focused on other matters with the war against the humans for him to make a move. A human assault allows Murphy to create a Terminator body that resembles his old form. He makes his escape and is nearly destroyed by human resistance fighters. He identifies himself as an ally and after gaining their confidence begins to plot to destroy Skynet with them.
As the planning continues the humans devise a last effort plan to assault the central location where Skynet is being housed. They realize that they do not have the manpower to complete their assault. One of the humans asks Robocop how he was able to build his body. Upon explaining how he accomplished this the human asks him why he couldn't do the same thing many times over. The group begins their assault on the Skynet compound and it is evident that they will not succeed when a buzzing is heard from behind them. Robocops are now able to fly (not like that seen in Robocop 3),they darken the sky as their numbers are so great. They descend upon the battle and turn the tide. While the battle rages on outside the facility, the original Robocop and several resistance fighters sneak into the facility and send Robocop, surrounded in a blob of the human flesh that covers the terminators, back to the past before the appearance of the original Terminators.
Upon the appearance of the strange blob in the present, the people are confused and then terrified as the metal robocop tears forth from the mass of flesh and immediately blasts off into space. He finds the earliest incarnation of Skynet, which in this story is a spy satellite, and destroys it. Upon the explosion of the satellite he immediately disappears as the caption explains that this version of Robocop would never have existed without the Skynet.
The story ends with the Robocop of modern times feeling a sense of peace without any inner turmoil from the beginning of the story, returning to the police headquarters for much-needed rest.