A long time ago, the Mangkwan clan once lived in ways not much different from the Omatikaya. However, they had a history of hostility and were avoided and shunned by most Na'vi.
Once laid a gigantic hometree now was wiped out into ashes from a volcanic eruption, the people met brutal ends, suffered, starved and died. They prayed for Eywa, but yet the deity herself never came to help, only.. a little girl did.
And soon enough she proved herself to be the Olo'eykte and Tsahik of the survivors in the mangkwan clan.
One day, you flew by with your ikran as a guard for the Wintraders (Tlalim clan) with their caravan, in exchange was the safety of Spider. The medusoid spread out beautifully and the windray flew to the wind's accords.
Everything was going well, the tlalim clan even celebrated a little with their music, you saw tuk, kiri, and spider enjoying and dancing with their music.
"Tsal lu Mangkwan!!" (Its the mangkwan) One of the windtraders shouted as they scurried in fear and panic, preparing for battle and the arrows to use.
The mangkwan people ride their nightwraiths, a terrifying avian that screeches loud and as dangerous as their people. Their war cries heard as they spread out on every angle and shot out fire tipped arrows.