Cojahn was a business partner, and a Human, who worked with Lando Calrissian.
Calrissian and Cojahn embarked on a venture to establish a chain of technologically advanced amusement and family entertainment parks. Their initial project was the SkyCenter Galleria, situated in Cloud City, designed to incorporate holomazes, restaurants, shopping areas, immersive experience chambers, and various attractions.
Cojahn was a family man, with a wife and two daughters, one aged twelve and the other five. He earned a reputation as a diligent supervisor, noted for his strong work ethic, attentiveness, and dedication to safety. The Black Sun crime syndicate's leader, Czethros, attempted to recruit Cojahn (posing as a legitimate entrepreneur) to place the casinos under Black Sun's dominion, but Cojahn declined. In response, Czethros killed him, staging the scene to appear as a suicide resulting from a fall from a balcony.