Pvt. Casper

Casper is one of the two Green Berets that rescued Nate from a cave in the mission Captured.

In-game
He and Sean Vickers were sent on a mission to gather intel about WhiteKnight from Nguyen Trang's base camp. After rescuing Nate from the caves, he and the player assault the camp via a side entrance, while Vickers blows up the main gate with satchel charges. The two proceed to traverse a series of underground tunnels, fighting off Infected and VC along the way. Casper is later attacked by two infected soldiers. He attempts to save himself by throwing a grenade, and although the explosion initially saved him from the infected it sealed him behind a wall of debris and tore off his left leg. He shouts that he is still alive and pleads with Nate to rescue him, but by the time Nate can make his way around the rubble, Casper has bled to death.