Though there are several playable characters in the Modern Warfare 3
campaign, Derek "Frost" Westbrook is one of the two primary characters. He is one of four members of Team Metal, a branch of the Delta Force. Most of the team's missions represent the front lines aspect of combat.
During the end of the game Taskforce 141 and Team Metal link up to rescue the Russian President. Grinch
, and the playable character Yuri
are all present in the mission; however, there is no sign of Frost. During this mission all of Team Metal dies, while only the members of Taskforce 141 and the Russian President are able to escape. The whereabouts of Frost are still unknown, as he isn't mention again.