Hell Unleashed was the first season of the Galactic Apocalypse series and introduces the rebirth of Exar Kun whom works alongside Darth Vader to build a power base strong enough to challenge Emperor Palpatine, Kun comes to seek the other Typhojem in preparation for his bid on the rest of the Galaxy and the destruction of the Galactic Empire, however to bring back the Sith Empire he finds himself making actions to draw out the hidden remains of Vitiate's Empire to repopulate Sith Space to be the Seat of his new Empire.