Eogan Truax, a Human male, was the sixteen-year-old son of Artagan Truax, and they were both prisoners incarcerated at the Cog Hive Seven prison in 33 BBY. He had red-brown hair coupled with pale-green eyes.
Eogan Truax, born in 49 BBY, resided in the Cog Hive Seven prison as the offspring of Artagan Truax. After Artagan rescued Iram Radique from an assassination attempt, he and Eogan escaped. While being pursued by the Bando Gora Cult (the would-be assassins), Eogan Truax was brought by his father to the Prison Cog Hive Seven. Desiring to abandon his past with the cult, Artagan sought assistance from Radique to safeguard his son. However, the proposed arrangement was unsettling, leading him to decline the offer.
For years, he and his son remained within Cog Hive Seven, until he attempted to bribe a guard to release them and disarm the explosives implanted in their chests. The scheme failed, resulting in their recapture and Artagan's injury. Eogan had undergone extensive combat training by his father, but his father did not believe Eogan possessed the same ruthless drive to win and conquer that he had, and therefore thought Eogan would most definitely die if he was put into a death match.
Artagan eventually succumbed to his injuries, developing severe blood poisoning and a high fever. Eogan, however, managed to survive the destruction of Cog Hive Seven by hitching a ride with Komari Vosa, the former Jedi Apprentice of Count Dooku, and Maul, who was a Sith Assassin at the time.