Oussa

Oussa was a yuan-ti in the Doomvault dungeon in 1486 DR.

Personality
Oussa was a devotee of Zehir.

History
Oussa was one of the many Chosen captured by the Red Wizards of Thay and transported to the Doomvault dungeon for experiments. More specifically, he was the chosen of Zehir. Oussa was freed from his chains by the heroes of Daggerford but then he realized that they were not followers of Zehir and tried to kill them but was defeated.