Ziang Tan

Ziang Tan was a former Prisoner of war-turned Diamond Dogs mercenary.

History
At some point, he got captured by the Soviets. Venom Snake then rescued him due to his possessing skilled abilities. Unfortunately, although he was successfully rescued, he also ended up getting himself captured repeatedly.

Behind the scenes
Ziang Tan was a major character in the "Unlucky Dog" series of Side Ops from Metal Gear Solid V: The Phantom Pain.

He first appeared in the E3 2014 demo of The Phantom Pain. He is based on the playtester of the same name.