Lady Qi’ra was a human female crime lord from the planet Corellia who lived during the reign of the Galactic Empire. She grew up on the streets along with Han as part of the White Worms. Though they were at first rivals, the two scrumrats eventually became lovers. Sometime after Qi’ra was made Head Girl by Lady Proxima, Han and Qi’ra attempted to escape with a vial of coaxium, but were separated at the Coronet Spaceport, with Han getting away, though he promised to return for her.
Qi’ra was sold into slavery by Proxima to the slave dealer Sarkin Enneb, who eventually sold her to Dryden Vos, the public face of the criminal syndicate Crimson Dawn. Vos saw potential in Qi’ra and trained her personally before giving her the chance to take revenge on Enneb. By killing him, Qi’ra earned the right to join Crimson Dawn and rapidly climbed the organization’s ranks to become Vos’s trusted lieutenant.
In 10 BBY, Qi’ra reunited with Solo on Vandor and accompanied him and his friends on a mission to retrieve coaxium. She recommended a ship owned by the smuggler Lando Calrissian and rekindled her relationship with Solo. After the mission was unsuccessful, she returned to Vos, whom she betrayed and killed to save Han. Despite this, however, Qi’ra left Solo behind as she traveled to Dathomir to meet with the former Sith Lord Maul, the true leader of Crimson Dawn. During her time under Maul, the former Sith explained to her the true nature of the Imperial Era: Galactic Emperor Sheev Palpatine and the Empire’s informal Commander-in-Chief Darth Vader were both Sith, with the Empire a mere puppet through which the Sith Order could again control the galaxy.
Between 3 ABY and 4 ABY, Crimson Dawn resurfaced under the leadership of Qi’ra. Having stolen Han Solo, who had been frozen in carbonite, from bounty hunter Boba Fett, she plotted to bring major galactic factions to her with Solo as the bait. Once the Attack on the Executor ended, with the Empire and Hutt Clan in conflict, Qi’ra moved forward with her next plans to bring down the Sith. She lured the Emperor and Vader into a trap at the Amaxine Space Station, but her plans were disrupted when the Knights of Ren betrayed her and freed the Sith Lords from the Fermata Cage, resulting in the total collapse of Crimson Dawn. Qi’ra bequeathed her remaining resources to the young Cadeliah and went into hiding, watching the fall of the Empire from obscurity.
The background info and stats here reflect Qi’ra later in her career during her time as the established leader of Crimson Dawn, as seen in the War of the Bounty Hunters/Crimson Reign/Hidden Empire comics trilogy. Feel free to adjust stats accordingly for a younger Qi’ra around the time of Solo. I may get around to statting out that version of her one of these days.