Vic Stone was the son of a pair of scientists who decided to use him as a test subject for various intelligence enhancement projects. However, Victor grew to resent this treatment and fell in with a young miscreant named Ron Evers who led him into trouble with the law. This was the beginning of a struggle where Victor strove for his own life engaging in pursuits his parents disapproved of such as athletics. In addition, Victor still kept bad company that led him into incidents such as when he was talked into participating in a street gang fight in which he was wounded. For the most part however, Victor still had a largely normal life under the circumstances where he also refused to follow his best friend's grandiose plans of racially motivated terrorism.
All that changed one day when he visited his parents at work at S.T.A.R. Labs. Coincidentally, an experiment in dimensional travel went horribly awry when a massive gelatinous monster crossed over an experimental portal and killed Victor's mother. The creature then turned on Victor and severely mutilated him before his father managed to force the creature back through the portal. To save his son, Victor's father outfitted him with experimental prostheses of his own design. However, the equipment could not be worn inconspicously, and thus Victor was horrified to see much of his body, including part of his face, replaced with sheer metallic limbs and implants. Although Victor wanted to die at this shock, he adjusted enough through his resulting physical therapy to control his implants with suitable skill.
Upon release from medical care, he found his life was seriously inconvenienced with the fearful reactions of the public at his implants; even his girlfriend rejected him. In addition, he was also disallowed his participation in athletics not only for his implants but for his poor grades which were further exacerbated by his long convalescence. However, when his old friend attempted to use Victor's troubles to manipulate him into attempting a terrorist attack on the United Nations, Victor found a new purpose as he equipped his weapons attachments and stopped his friend in a pitched battle on the UN building.
New Teen Titans
He joined the Teen Titans, initially for the benefit of a support group of kindred spirits and freaks and has remained with that group ever since. In addition, Victor found new friends who saw past his disfigurements to his own nobility such as a group of children who were adjusting to their own prostheses and idolized Victor with his fancy parts and exciting adventures as well as their beautiful therapist who took a shine to him herself.
Throughout his association with the Titans, Victor has been destroyed, reconstructed, assimilated by an alien race, and had his humanity restored. He later went on to mentor a new Teen Titans group, consisting mainly of sidekicks, most of whom have taken over the secret identities of former members (i.e. Tim Drake, the third Robin, instead of Dick Grayson, the original Robin and Titans leader), as well as stalwarts such as Starfire, Raven, and Beast Boy, where they have fought enemies such as Deathstroke, Doctor Light, The Titans of Tomorrow and Superboy and Indigo during the Insiders storyline with a team up with the Outsiders.
Cyborg always had a problem with his humanity. Since he had lost most of his body in that horrible accident which turned him into a hero; he had always been challenged to maintain his human-side along side living with his robotic body. After a while Cyborg began to upgrade his body with new powers, weapons, and abilities. He became more of a robot; his voice changed and his mannerisms were more technical. Although he maintained he was still human not much was left. Eventually during the event of the Technis Imperative a robotic life form named Technis came to earth during it's universal search for knowledge and cataloging. When it tried to assimilate Earth the Titans stopped it, but Technis singled out Cyborg as he was practically a walking computer. Cyborg's one main crave was his humanity back to it's original level so he could be the athlete he always wanted to and Technis sought to serve this purpose. Technis was not one single being he was a mass of hundreds of them; beings who had a linked minded aptitude to collecting. So Cyborg joined their group in exchange for his soul, essentially. He became Cyberion and Technis became his family, but in the search and cataloging that spanned the universe Cyborg decided to ask Beast Boy to help him on his journey. Beast Boy accepted and Cyborg now called Cyberion Technis traveled around the universe until the day Technis was destroyed in a battle. This utterly changed Cyborg as he now lost his second family which shook lose his humanity again and he began to remember his old self and longed for it's return.
The Technis Imperative
After this entire event Beast Boy lost faith momentarily in his best friend and fled back to earth. Now entirely alone, Victor Stone, lost all sense of humanity in a matter of days. Without a team of Teen Titans on earth and with members spread across the globe Cyborg eventually came back to earth in a big way. He became Planet Cyberion and on his cascading trip back to earth he began assimilating and collect everything in his way until he became as big as the moon and when he returned to earth he overcame the moon and with it the JLA Watchtower. The Justice League was angered at this hostile takeover and attacked Cyborg not knowing the man within. Cyborg began to take every single Titan ever on the roster at all (including Green Lantern Kyle Rayner and Atom Ray Palmer. But since the Justice League attacked Cyborg his actions started to affect the Earth and it's atmosphere (he was riding on the moon). Horrible natural disasters and terrible technological threats and shut downs afflicted the earth plant-wide. All the Titans were brought in pods to Titan's Island in New York City. Once all of the Justice League, Young Justice, JLA Reserves, Titans and Teen Titans were brought together a massive fight broke out over the destruction of Cyborg vs. the savior of the world. This fight distracted Cyborg's programming and allowed a team of Leaguers and Titans to break off and head towards the moon where the main central power core of Cyborg's being as held. The Titans (mostly Beast Boy) succeeded in bringing the human out of Cyborg by manipulating his virtual reality environmental programming and using it on Cyborg himself; this produced an image of Victor's father that said only pleasant things to Victor. Victor's soul was finally free and Raven herself brought his soul to try and upload it into the Titan's mainframe computer. However Victor's soul rejected the computer programming and Beast Boy suggested putting his soul in the Omegadrome Suit and she did. Cyborg then became Omegadrome; the golden suit, shape shifting Cyborg.
During Infinite Crisis, Cyborg joined Donna's New Cronus Team that went to investigate a hole in the universe that was discovered during the Rann-Thanagar War. He left Beast Boy in charge of the Titans while he was gone. They arrived at the re-set center of the universe and with the help of assorted heroes, aided in the defeat of Alexander Luthor, who was attempting to re-create the Multiverse and build a perfect Earth from it.
Cyborg was fused together with Firestorm after returning to Earth. This was caused by the energy ripples caused by Alexander Luthor Jr. which altered the Zeta Ray Beams the heroes were going to use to return home.
One Year Later
After being severely damaged during the events of Infinite Crisis, Cyborg was rebuilt over time in thanks to Tower caretakers Wendy and Marvin. He awoke one year later to find a wholly different group of Titans led by Robin, the only member from the team he formed prior to going into space. Cyborg felt that members such as Kid Devil and Ravager were hardly worthy of being Titans, and thus was attempting to find a way to re-form "the real Titans".
After the team along with the Doom Patrol defeated the Brotherhood of Evil, Cyborg asked Beast Boy to rejoin the Titans, but Gar refused saying that his skills were needed with the Patrol. After returning to Titans Tower, Cyborg began reviewing the security tapes during the last year, in which it appears that he was looked to by all the Titans of the past year for a shoulder to lean on, despite being in a coma-like state.
Although Cyborg did retain the position of statesman amongst the Teen Titans and occasionally played second-in-command to Robin's lead, he no longer operated as a Titan in any official capacity.
Shortly thereafter, Batman, Wonder Woman, and Superman agreed that Cyborg should be offered membership in the new Justice League. However, following a battle against Amazo, Green Lantern (Hal Jordan) and Black Canary took over the formation of the JLA, and Cyborg was not included among the roster.
Cyborg began putting together a new branch of Titans East which consisted of Anima, Dove, Hawk, Lagoon Boy, Little Barda and Power Boy. During a training exercise, the team was attacked by an unknown foe and Cyborg was severely injured. This incident inspires the original members of the "New" Teen Titans to regroup and investigate the situation.
Cry for Justice
Cyborg's new team didn't work out and when the new Teen Titans formed after his Titan's East's destruction he played second in command again. Although not officially on the roster he helped them on their investigations; he later joined officially and headed the new team of Teen Titans. They had many adventures together when their numbers started to grow and the founding members started to move on to bigger things. Wonder Girl began to lead this new team and they moved to Titans Tower in San Francisco, California. Soon the old founding members joined an unofficial team called the Titans to work as a family and a place to relax from their all overwhelming lives. But the peace didn't last when lives started to overlap and intersect and fewer members started showing up.
When the Titans fell apart again, Cyborg joined the JLA alongside Dick(as Batman) and Donna Troy. Officially on the team, he did not enter the field of battle much. Instead, he devoted his time to helping improve the Red Tornado's android body.
After the timeline was drastically altered by Professor Zoom in an effort to destroy The Flash, in this new history, Cyborg is America's greatest hero and a resistance leader in a dystopic world. He attempts to put together a group to stop the war between Aquaman and Wonder Woman's forces. However, the heroes he approached all refuse, after Batman (Bruce Wayne's father Thomas) declines. Cyborg was later relieved of his duty by the U.S. President when contact with the resistance in the Amazons occupied-United Kingdom due to a traitor among the heroes that Cyborg tried to recruit.
Cyborg was then summoned by Batman and the Flash for his help in tracking down "Project: Superman", the government branch responsible for 'raising' Kal-El after his rocket destroyed Metropolis upon its arrival. Cyborg agreed to join the cause to stop Wonder Woman and Aquaman. The trio infiltrated Project: Superman and freed Kal-El, who only left them at the hands of the facility's guards until they are rescued by Element Woman. Later, Cyborg and the other heroes recruited the Marvel Family and traveled to the U.K., where the conflict between the Amazons and Atlantis escalated.
Eventually the heroes restore the timeline, but the mysterious Pandora alters it into an entirely new form.
Cyborg's entire history is erased, including his origins and his membership in the Teen Titans. He is portrayed as a high school athlete at odds with his brilliant scientist father Silas Stone. Vic is caught in an explosion at S.T.A.R. Labs when a nearby Father Box detonates. His father saves his life by using experimental technology to turn him into a Cyborg. He meets Aquaman, Batman, The Flash, Green Lantern, Superman and Wonder Woman while trying to control his new powers. In the middle of an alien invasion, he helps them fight Darkseid and his Parademon army. They work to take him down as a team, and Cyborg taps into the alien technology to close their portal after Superman hurls Darkseid back to Apokolips. This crisis leads humanity to finally accept super-heroes.