Ezri was the daughter of Yanas Tigan, along with her brothers Janel and Norvo. The Tigan family owned and operated the Tigan Mining Consortium (TMC), a pergium mining business in the Sappora star system. The TMC used its excavation technology to help hundreds of slaves escape from Sappora VII. (DS9 - Mirror Universe novella: Saturn's Children)
In the 2370s, Ezri worked as a freelance mercenary, taking paying jobs from both the Rebellion and the Klingon-Cardassian Alliance. She partnered with Brunt and was romantically involved with Kira Nerys. While members of the Rebellion criticized Ezri for her lack of loyalties, she said at least once that she was "loyal to her friends," which included Kira. Members of the Rebellion likely knew of her close ties with the Alliance, as Julian Bashir called her a "traitor," and Miles O'Brien failed to pay her for a job around 2375.
In 2375, in the employ of Regent Worf, Ezri came up with a plan to steal cloaking device technology from the "counterpart universe." The counterpart Zek had been kidnapped by the Alliance, and Ezri suggested holding him ransom for a cloaking device. She crossed universes and encountered Quark, who thought her violence was his universe's Ezri Dax engaging in sexual roleplaying. Ezri convinced Quark and his brother Rom to steal a cloaking device from a Klingon ship while she waited in cargo bay 14 of Deep Space 9. She then used a multidimensional transporter to return to the mirror universe with the cloaking device and, much to her chagrin, the two Ferengi.
Upon returning to the mirror universe, Ezri was taken prisoner by the Rebellion, but soon ousted by her partner Brunt. Along with Quark and Rom, they took Brunt's ship to rendezvous with the IKS Negh'Var and deliver the cloaking device to the Alliance. Once there, Ezri was reunited with Kira, but the relationship was soon soured after Kira killed Brunt for insisting on compassion for Quark and Rom. She tried to help the Ferengi by freeing Rom, albeit temporarily, to install the new cloaking device. Afterwards, she killed Elim Garak to save Quark's life. Although she passed an opportunity to kill Kira, she declared her loyalty to the Terran Rebellion.
Joining the RebellionEdit
Ezri soon became romantically involved with Leeta, and joined the Terran Rebellion, living on Terok Nor. That year, she also began serving as tactical officer aboard the Defiant under General O'Brien for several missions, including the destruction of Vareth Dar. She is a wanted criminal in the Alliance.
While on Terok Nor, Ezri made little use of the comm systems, limiting her usage to mission-specific transmissions and queries of public news archives. Her greatest interest was a newsfeed from the Trill Sector of the Alliance News Network, which she monitored to keep aware of the activities of her family. She stopped tracking her family when her mother and brother were killed in an Alliance raid of the family business.
In January 2377, Ezri briefly conversed with her primary universe counterpart Lieutenant Ezri Dax as well as Quark, Captains Benjamin Sisko and Kira Nerys, Doctor Julian Bashir, Lieutenant Nog and the Iliana Ghemor of her own universe after Nog was able to establish communication between Terok Nor and Deep Space 9. Her first words upon seeing Quark on the viewscreen were, "Oh, no...not you."
The crew of DS9 warned the rebels that the Iliana Ghemor of the primary universe had killed the Intendant, assumed her identity and attended to become the Emissary of the Prophets by discovering the Bajoran wormhole. However, after twelve Klingon ships including the IKS Negh'Var were detected approaching the station and Smiley had ordered his crew to prepare for a planetary bombardment of Bajor starting with its capital Ashalla, the conversation was cut short by the primary universe's Ghemor. (DS9 novels: Fearful Symmetry, The Soul Key)
By 2377, Ezri was aware that her primary universe counterpart was the host of the Dax symbiont. Leeta wondered whether Ezri's primary universe counterpart was married to her own counterpart. (DS9 novel: The Soul Key)
Ezri served as tactical officer aboard the Defiant and was a capable soldier. During the war, Ezri lost her wife in the destruction of Terok Nor in 2377 and subsequently sank into a deep depression. Her friends and colleagues grew very concerned about her. In the end, Smiley brought Ezri around and she returned to duty. Concurrently, due to the shortage of experienced officers, Miles offered Ezri the position as his first officer. Ezri was surprised by the offer, questioning her own abilities. After some encouragement from Smiley, she accepted the job. (ST - Mirror Universe novel: Rise Like Lions)
Joining with DaxEdit
In January 2379, Smiley retired from service as an officer and nominated Ezri to take over as commanding officer of the Defiant. As such, Ezri assumed command and began conducting missions for the new government. Following some initial resistance to the idea, at the request of Saavik, the Director of Memory Omega, Ezri was bonded with the Dax symbiont following the death of Curzon Dax. (ST - Mirror Universe novel: Rise Like Lions)
- ST - Seven Deadly Sins novella: Freedom Angst
- DS9 episode: "The Emperor's New Cloak"
- DS9 - Mirror Universe novel: Saturn's Children
- DS9 novel: Fearful Symmetry
- DS9 novel: The Soul Key
- ST - Mirror Universe novel: Rise Like Lions
|Terok Nor personnel|
| Cardassian Union|
and Cardassian-allied personnel
|Basso Tromac • Boheeka • Corat Damar • Datar • Skrain Dukat • Dulath • Hadar • Mavek • Narat • Oran • Parek • Sigol Rusot • Gaten Russol • Thrax Sa'kat|
| Bajoran Provisional Government|
and Bajoran-allied personnel
|Jabara • Kellec Ton • Kira Nerys • Odo • Rom|
|Mirror universe Terok Nor personnel|
|Klingon-Cardassian Alliance||Elim Garak • Kira Nerys • Odo • Jennifer Sisko • Telok|
|Terran Rebellion||Julian Bashir • Sam Bowers • Jadzia • Michael Eddington • Keiko Ishikawa • Leeta • Enrique Muñiz • Nog • Miles O'Brien • Jennifer Sisko • Luther Sloan • Lon Suder • Ezri Tigan • Tiron|
|Commanding Officers of the Starships Defiant|
| Prime reality|
|USS Defiant (NCC-1764)||Serling • Blair|
|USS Defiant (NX-74205) (I)||Sisko • Dax • Worf • Kira|
|USS Defiant (NX-74205) (II)||Ross • Sisko • Jast • Dax • Vaughn • Kira • Ro • Stinson|
|ISS Defiant (NCC-1764)||Archer • Sato • Mayweather • Robinson|
|Defiant||Sisko • O'Brien • Leeta • Dax|