He gave Miral the assignment of Intendant of Earth in 2368 as punishment for spurning his "crude advances." (VOY - Mirror Universe novel: The Mirror-Scaled Serpent; ST - Mirror Universe novel: Rise Like Lions)
After the capture of Terok Nor by the Terran Rebellion in 2372, Worf lead a fleet of Alliance ships to reclaim the station aboard his flagship. However the rebels with the help of our universe's Benjamin Sisko were able to complete a version of the Defiant and successfully defended the station forcing the Regent to retreat. (DS9 episode: "Shattered Mirror")
Despite his status as a major antagonist to the Rebellion, Worf was treated fairly in his confinement. He was allowed to decorate his prison cell according to Klingon tastes, was given Klingon food to eat, and was not harassed by his guards. After the final Terran victory and the defeat of the Alliance in January 2379, Worf was visited by Miles O'Brien, who released Worf from confinement, handed him his d'k tahg, and told him he was free to go. Worf immediately committed Klingon ritual suicide; with his dying words he thanked O'Brien for allowing him to regain his honor in death. (ST - Mirror Universe novel: Rise Like Lions)
In one permutation of the mirror universe in which the Terran Empire survived into the 24th century, all non-Terrans and non-Vulcans were termed "slaves", including ISS Enterprise-D crewmember Worf, who - not being a warrior - wore no baldric.
After a meeting with Jean-Luc Picard of the USS Enterprise-D, Worf told Picard that the entire Klingon race had been conquered centuries earlier. Picard urged Worf to be the force of change in his universe, as the Terran Empire (which was referred to as the United Empire of Planets in that timeline) had grown too large to sustain itself based solely on conquest, and would collapse within a century. (TNG novel: Dark Mirror)
Worf was the son of Mogh, who along with his wife Kaasin, was killed by Rihannha in the Khitomer Massacre, as were 3,998 other Klingons. The first ship to come to the rescue included officer Ja'rod, who adopted the orphaned Worf. As a member of Ja'rod's family, Worf was an opponent of Gowron.
Worf's brother, Kurn, died in a second massacre at Khitomer shortly after the first one. Worf was, in fact, the only survivor of the two attacks.
At their advice, Worf passed through the Elas system, but was refused assistance from the Dohlman of Elas, so he blew up one of her ships. The Elasians then begged for forgiveness. After the incident, Worf began planning a Kot'Baval Festival and hoped to install Duras as the Empire's Overseer. He looked forward to drinking Trakian ale during both events.
Later, Worf joined Troi, Kira and B'Elanna Torres in a meeting regarding deep-core mining chaired by Jennifer Sisko. It was shortly after this that K'Mpec died in his sleep, whereupon Gowron summoned Worf back to Qo'noS. Gowron was eventually elected as the new High Chancellor.
When Troi was in the process of giving birth to her and Worf's child on the planetoid New Hope, she was murdered by Kira, who then comforted Worf in his grief. Worf's investigation into Troi's death led him, as per Kira's plans, to blame the Andorians, so he went to Andor and slaughtered virtually every Andorian existent, on Andor and its two sister planets. Worf named this victory the Great Andorian Massacre.
After Worf discovered the true killer of Troi, he and Torres assisted Agent Seven of Corps Nine in her plan to overthrow Kira as Overseer. This was accomplished with the acquisition of an Iconian portal. Worf's help in this matter is later publicly submerged. (TNG novel: Dark Passions)
|Regents of the Klingon Empire in the mirror universe|
|Sturka • Gorkon, son of Toq • K'mpec • Worf, son of Mogh • Jean-Luc Picard • Martok, son of Urthog • Klag, son of M'Raq • Duras, son of Ja'rod|
|IKS Negh'Var personnel in the mirror universe|
|Duras • Elim Garak • Kira Nerys • Kurn • L'Haan • Martok • Ro Laren • Taran'atar • Worf|
|ISS Enterprise-D personnel|
|Reginald Barclay • Beverly Crusher • Wesley Crusher • Eileen Hessan • Geordi La Forge • Miles O'Brien • Jean-Luc Picard • William T. Riker • Mark Stewart • Deanna Troi • Worf|