Worf (mirror)

In the Mirror Universe Worf is the Regent of the Klingon-Cardassian Alliance. 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:Shattered Mirror)

In 2375 Worf was captured by the rebellion after his ship was disabled by a cloaking device brought to the mirror universe by Quark and Rom. (DS9:The Emperor's New Cloak)