During the early days of the Galactic War, Darth Thanaton challenged Lord Kallig, the former apprentice of the allegedly corrupt Darth Zash, to a Kaggath. Thanaton's fear of Kallig's growing power, and his disgust for anything associated with Darth Zash, led him to challenge the rising Sith Inquisitor to a contest that would pit their different power bases against one another. There was no opportunity to withdraw and no opportunity to forfeit; the winner would take eternal glory, the loser humiliation and most likely death.