Lunn served as a clone trooper throughout the duration of the Clone Wars conflict. He fought alongside Sergeant Coric on Teth in 22 BBY, participating directly in the events there. Lunn met his end during the Battle of Teth, where he perished alongside the majority of his company.
Lunn, a male Human clone originating from Jango Fett, a bounty hunter, possessed a height of 1.83 meters. His origins trace back to the planet Kamino, located in Wild Space.
Karen Traviss introduced Lunn to the Star Wars universe in her 2008 novelization of the Star Wars: The Clone Wars film.