So'lek was a respected young hunter in his clan, which took part in the Battle of the Hallelujah Mountains. He fought well only to learn that most of his clan had been wiped out and the survivors absorbed into other clans. So'lek swore revenge on the RDA. He rejected the fragile new collaboration between Na’vi and humans and headed into the wilderness - alone.

He eventually made his way to the Western Frontier and settled down on the fringes of Aranahe lands. For years, he hunted and trained in the forests. When the RDA returned and began to establish their presence in the area, So'lek celebrated. Finally, a chance for revenge! He hunted small RDA expeditions, picking off soldiers one by one. His activities were noticed by the Resistance and they tried to recruit him. Distrustful at first, So’lek soon teamed up with them for sabotage missions and ambushes. He found opportunities for the vengeance he craved, though he could never quite warm up to the humans. He used them as a tool for his own ends.

So'lek bonds with the Sarentu. Only they can get him to smile or show a flicker of emotion. Otherwise, his desire for revenge shadows his life.