SCIFI.COM - Farscape

The Peacekeepers are mercenary soldier/warriors. Not content with exercising dominion over their own species, the Peacekeepers have branched out to many other sectors as well. For a price, they will serve as the military force for planets that lack one, though this arrangement is usually more advantageous to the Peacekeepers than to their "clients."

Peacekeepers are tenacious fighters with massive ships and overwhelming weaponry. They frequently capture living Leviathan ships, place them in "Control Collars" to force obedience, and turn them into troop or prisoner transports. Moya and I were Peacekeeper captives for many, many cycles...until the prisoners Zhaan, D'Argo, and Rygel escaped, removed the Control Collar, and freed Moya and me.

Captain Bialar Crais is in command of the Peacekeeper Command Carrier responsible for recapturing Moya and the prisoners. He pursues this task with extra zeal because he blames John Crichton for the death of his brother, Prowler pilot Tauvo Crais.

When Crichton's space module first appeared -- propelled here by something he calls a "wormhole" -- it accidentally collided with Tauvo Crais's Prowler.

And when Officer Aeryn Sun, a Prowler pilot captured by D'Argo, Zhaan, and Rygel, attempted to explain that to Captain Crais, Crais refused to listen -- and instead declared Officer Sun "irreversibly contaminated" by her "unauthorized" contact with the "alien" lifeforms Crichton, Zhaan, D'Argo, and Rygel. Crais sentenced her to death, but she and Crichton managed to return to Moya and flee from Crais.