Tan Tsu
Tan Tsu was a male Human civilian who lived during in the mid-24th century. In 2367, he served as an engineer aboard the Federation freighter Arcos. 

During its final mission, the ship was destroyed by a warp core breach near Turkana IV. Tsu and the ship's pilot escaped in an escape pod, and landed on the planet. They were captured by one of the two cadres who controlled the planet, the Alliance. 

The Alliance demanded weapons in return for their release. When the  came to retrieve them, Tsu was directed to communicate that he would be killed if their demands were not met. 

Tsu and his comrade were rescued by Enterprise away team with help from Ishara Yar of the other faction, the Turkana IV Coalition. It turned out Yar had ulterior motives, but still allowed Tsu to be rescued. ()

Humans