Darth Kallous was a male Sith Lord of the resurgent Sith Empire who resided on Corellia during the Galactic War. During the battle of Corellia, he served as an agent of Darth Thanaton when the Dark Lord ascended to the Dark Council. Kallous was very strong with Force lightning and had no trouble using it in powerful blasts of energy.
Kallous watched during the Kaggath between Thanaton and Kallig from the background.
Had Kallig allowed Darth Achelon to die at an earlier point, Darth Thanaton calls upon Darth Kallous to kill Kallig. If Achelon was instead spared then Thanaton calls upon him instead to kill Kallig, only for Achelon to refuse. In the latter instance Kallous is present, but doesn't participate in combat.
Had Kallig allowed Darth Achelon to die at an earlier point, Darth Thanaton calls upon Darth Kallous to kill Kallig. If Achelon was instead spared then Thanaton calls upon him instead to kill Kallig, only for Achelon to refuse. In the latter instance Kallous is present, but doesn't participate in combat.