Kun then traveled to Yavin 4, and the long forgotten Sith temples.
In Sith tradition, he took on his own apprentice, Ulic Qel-Droma(a fallen Jedi).
Together they recruited many apprentices, such was that many Jedi turned against their masters and killed them, succumbed
by the Dark side's power.
Under his follow, his apprentices destroyed entire civilizations.
So, after a long period, a joint republic and Jedi taskforce traveled to Yavin to capture him.
Knowing his downfall would be soon, he summoned his energies and trapped his consciousness in his Masassi temples (his
warriors were known as Massasi).
Years later, when Luke began to teach pupils, Exar returned in the body of Kyp Durron to rule once again. However, Luke's
students united together and disspelled Exar's spirit.