Real Name: UnknownThe woman who would become known as Domino is actually the result of a top-secret government breeding program intended to develop the perfect weapon. Domino was the only test subject to survive, but her "luck" power was deemed a failure to meet the project's goals. Her biological mother broke her out of the project, and left her with Father Rudolpho Boschelli in the Church of the Sacred Heart in Chicago. Domino eventually escaped from the Church and became a mercenary. One of her first jobs was to stop an "Operation: Jericho," which was a remote-controlled warbot project. Domino wrecked the robot, in the process frying the mind of the soldier controlling it. Then she was assigned to guard the genius Dr. Milo Thurman, whose analytical ability made him too dangerous for the government to let him roam free. Somehow, Domino and Thurman fell in love and were married, apparently officially. Thurman had a thing for Dante's "Inferno" and called Dom "Beatrice." However, they eventually divorced when Dom had to change postings.
Dom then became a member of the mercenary group the Six Pack, led by her more-than-friend Cable. When the Pack dissolved, Dom went her own way. Although a woman named Domino helped found X-Force, that woman was actually Copycat, who was an assassin planted by Tolliver (Tyler Dayspring), who also had the real Domino locked away. Dom was eventually found and freed by Cable, but she went her own way (including executing an informatoin raid on Department H headquarters) until Cable asked her to join X-Force. Around this time, Domino came into conflict with Donald Pierce and Lady Deathstrike, who had captured Milo Thurman and were attempting to download his mind to a computer. Dom stopped the process, but it cost Thurman his life.
Then, during Operation: Zero Tolerance, Domino was captured by a Prime Sentinel named Ekaterina Gryaznova, whom she had injured years before during the Operation: Jericho run. Gryaznova had Dom implanted with a neural blocker that messed up her synaptic relays, effectively shorting out her power and her coordination. Dom was still very dangerous, proving it to herself by stopping a bank robbery single-handedly, which brought her to the attention of a federal agent. Just as he was confronting her, Dom was snatched out of our timeline by Halloween Jack, a refugee from the year 2099, who was fixated on Dom and tried to warn her about the impending death of her X-Force teammates. Dom ignored him and was returned to our timeline. Later she was seriously injured by the mercenary assassin Blockade, whose mind Cable vengefully wiped.
After recovering from Blockade's attack, Domino was found by Jesse Aaronson, who helped her find Gryaznova in exchange for Dom's help in finding his brother. During the fight with the "Gryphon" (Gryaznova's new identity), Jesse used his power to disrupt machinery to disable Dom's implant. So far it has stayed off. Then they rejoined X-Force. However, when Pete Wisdom came to teach X-Force, Dom left the team and disappeared. She resurfaced recently, possessed by Aentaros, one of the malevolent spirits called the Undying. Aentaros planned to use Domino to kill Randall Shire, a mutant who was himself possessed by another Undying. With the fate of the world hanging in the balance, Domino was defeated by Cable, who managed to immobilize her with a special weapon. When Cable defeated Aentaros and the Undying, Dom escaped from custody, and resumed her merc ways to make some cash. She was targeted for assassination by Marcus Tsung, a mutant with the power to murder, and so returned to X-Force for help. X-Force just barely managed to hold off Tsung, who was finally put down by Pete Wisdom's sister Romany, who also removed an alien symbiote from Dom's body. Dom remained with X-Force through the team faking their death after an LMD bomb almost killed them. However, when X-Force came upon a top-secret plot to use alien technology to recreate a planet-moving engine, they apparently could not stop the bio-engineered defenders of the facility. Only Domino got out, and the rest of X-Force was presumed dead following the explosion they set off, leveling the alien tech base.
Shortly thereafter, Domino was recruited by Professor X into the X-Corporation, an organization intended to monitor mutant rights violations. Domino was set up in Hong Kong, but when her partner Risque was killed, she called in the X-Men. Together the mutants uncovered the truth behind John Sublime's "Third Species" movement - namely, that he was harvesting body parts from living mutants to create his U-Men - and freed the mutant named Xorn. On this mission, Domino sported a special contact lens, with laser and zoom functions, and probably a good deal more. Dom was also seen (with the no-longer deceased X-Forcers) at a press conference held by the new X-Force (led by Coach and the Orphan at the time).
During her solo period, Domino began to search for her mother, leading her to a secret base in Florida where she found a boy who had the same eye tattoo. The boy, Lazarus, was revealed to be her half-brother, and the true result of the Perfect Weapon program. Dom was then confronted by her mother, who led a fanatical group of quasi-priests who were against the project, and was forced to shoot her to save Lazarus's life. She then took Lazarus to the Church she was raised in (though her mother subsequently abducted him from there). Domino then hooked up with Cable again, in his quest to find and destroy the new Weapon X Program and its secret Neverland base. Months later, when Cable unleashed and then purged the Facade virus all over the globe, she joined a new Six Pack team tasked with bringing Cable down. Cable did not stop the Pack's infiltration of his station, Providence, but also did not allow them to do any damage until Deadpool had neutralized his mental abilities. Domino and the Six Pack, however, were temporarily trapped in Cable's mind until Deadpool re-booted Cable's immune system with an infant Phalanx.
Following M-Day and the passing of the SHRA, Dom and Shatterstar broke into the Xavier Institute compound to free the 198. During the battle with the X-Men and the Sentinels, Dom demonstrated more conscious control over her powers than ever, consciously causing lightning to strike where she desired. She led the 198 to a secret base Nick Fury had let her use, but while Dom was fighting outside they all became trapped when General Lazer of the O*N*E locked them in and set a bomb to detonate. Luckily the combined might of the X-Men and the O*N*E prevented Dom's rescuees from dying.
Dom then infiltrated Rumekistan when Cable made his move and became its President, and though torn between her feelings for Nate and her job, she displayed incredible skill and proved that she could kill her former lover at any time. She left the country, but returned with the rest of the Six Pack to try and move public opinion against Cable by sabotaging the country's rebuilt infrastructure. She still wondered if they were doing the right thing, and when Cable turned the tables on the Six Pack, Dom accepted his offer of amnesty and agreed to work with him and denounce her former teammates and their employers. Dom's presence on Providence has proven a thorn in the side of Irene Merryweather, who doesn't trust her, and may be jealous of the intimacy that has re-kindled between her and Cable.
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