Merrk Kelborn can be described as a Human Mandalorian Rally Master of the male persuasion. He existed during the era known as the Cold War. His presence was recorded on Vaiken Spacedock, where he organized training exercises alongside his Mandalorian comrades, Gen Vizla and Braum Bourne.
The character of Merrk Kelborn made an appearance in the video game Star Wars: The Old Republic. In the game, he served as the Advanced Class trainer for those playing as Bounty Hunters. He, together with Braum "Zakkeg" Bourne and Gen Vizla, assisted players in developing the abilities of either a Powertech or a Mercenary. His role was eliminated in Game Update 5.0 when the choice of advanced classes was shifted to character creation instead of being available at level 10.