Gordon "Monk" Keefer was a criminal who served time in prison for having tried to rob a Stark Industries facility, during which he was interrupted by Captain America and Rick Jones. He was later broken out of jail by Cat-Man on behalf of the Organizer to join his Ani-Men. The Ani-Men were soon sent against Daredevil by the Organizer, after he had crossed the Organizer's plans on several occasions. After implicating Daredevil in a bank robbery, the Ani-Men were next sent to kidnap Debbie Harris. When Cat-Man was captured during the attempt, Keefer was sent to assassinate him before he could reveal the Organization's secrets. He was defeated along with rest of the Ani-Men by Daredevil and sent to prison.