Marlon Fenn

Marlon Fenn was a male mercenary living during the Revolt against the Eternal Empire. Following the death of the Eternal Empire Empress Vaylin and the formation of the Eternal Alliance in 3641 BBY, he joined Doctor Alirra Semhess' group of rogue Republic scientists who worked on a secret project on the X7-Cratus space station. Eternal Alliance operatives under Theron Shan eventually discovered Semhess and her project and a strike team was dispatched to X7-Cratus to stop RS-33 adrenal from becoming a galactic threat. Alliance forces engaged and defeated Marlon Fenn, but during their fight the station's containment systems were damaged and RAK-5 serum started leaking into atmosphere.

Behind the scenes
Marlon Fenn appears in Star Wars: The Old Republic: Knights of the Eternal Throne as a boss during the "Trial and Error" Uprising.