Monitor is an internal espionage organisation within Umbrella set up to monitor suspicious activity among its employees. Operatives are usually placed throughout the organisation and maintain the image of normal employees to help them conduct their activities. There were several placed among the U.B.C.S., one of whom was Nicholai Ginovaef.

Their orders range from spying on fellow employees and destroying evidence to cleanup operations, including assassinations as required. The rewards for successful operations far outweigh the risks, and monitors feel no remorse for selling out or killing their supposed comrades. Rumours are that Colonel Sergei Vladimir is the one pulling the strings behind the group.