The Major's subordinate

An arms dealer acted as a subordinate to the Major of Rogue Coyote. He was an undercover member of the Contract Forces of Africa.

Biography
At some point, the subordinate intended to meet with him so he could investigate a group known as the ZRS, due to the Major having suspicions about the nuclear arms trade's connection to yellowcake being distributed. Venom Snake, the leader of Diamond Dogs, proceeded to tail him to find the Major, as he was contracted to assassinate him.

Behind the scenes
The arms dealer is a key character in the mission "On the Trail" in Metal Gear Solid V: The Phantom Pain. The player needs to keep him alive long enough for him to be stalked to the Major's location to find him, afterwards, the player can choose to either kill him or recruit him.