Klingon mercenary hired by Verad to help take Deep Space Nine and steal the Dax symbiont.
T'Kar is one of two Klingon mercenaries working for the unjoined Trill Verad in Invasive Procedures. Along with his partner Yeto and Verad's companion Mareel, he boards Deep Space Nine during a plasma storm while the station is staffed by a skeleton crew and helps hold the officers hostage.
T'Kar stands guard while Bashir is forced to remove the Dax symbiont from Jadzia and implant it in Verad. As the plan unravels, the mercenaries are overcome by the crew. Tim Russ, later Tuvok on Star Trek: Voyager, played the role.