Sergeant Calhoun is the commander of the army against the Cy-bugs in the game Hero's Duty and a major character in the film Wreck-It Ralph. A tough-as-nails, take-charge leader who fights for humanity’s freedom, Calhoun is driven by a personal vendetta and will stop at nothing to protect the players of Game Central Station from a Cy-Bug invasion. So when Wreck-It Ralph unleashes a Cy-Bug on Sugar Rush, Calhoun is forced to follow to stop the virus from spreading.
Calhoun makes a cameo appearance in the platform game that continues the films story called Wreck-It Ralph and as a playable character in Hero's Duty, which is part of the smartphone compilation of mini-games called Wreck-It Ralph.