Rorf, a Vorcarian Blood Tracker, first appeared in the Farscape episode "Till the Blood Runs Clear", along with his mate Rorg they were bounty hunters looking for D'Argo, Rygel and Zhaan. In the episode he and his mate encounters John Crichton and Aeryn Sun, who convinced Rorf and Rorg that they were the well known bounty hunters Butch and Sundance, and that they should join forces to look for the fugitives. The joined forces ends up in a fight between the two bounty hunter groups and Rorf and Rorg flee.
In the episodes "Liars, Guns and Money (2): With Friends Like These..." and "Liars, Guns and Money (3): Plan B", Rorf and Rorg was chased by a Peacekeeper termination squad, because they gave up a hunt on some deserters due to Rorg being pregnant, D'Argo ends up saving them and Rorf agrees to help out with the attack on the Shadow Depository. Rorf dies at the end, but mange to make D'Argo promise to take his share of the loot to Rorg.