Worm (Modern Warfare 2)

Worm is an American Task Force 141 member who participated in the assault of the Russian gulag. He makes it to the bottom of the prison along with Roach and Soap and helps secure Captain Price. Upon Price referring to MacTavish by his nickname, comments "Who's Soap?" He evacuates safely with the rest of the team on the SPIE rope.

Trivia

 * Worm, and presumably many more TF 141 members, aren't aware of MacTavish's nickname. Evidence of this is that when they call out enemy positions to Soap, they call him MacTavish, never Soap.