Cal Noonan, also known as the Rat, is a CIA intelligence agent who once operated for the Intelligence Convergance Group, and survived past its dismantling.
Before Scarecrow Edit
Cal Noonan used to operate for the ICG before it was shut down and most of its members arrested. However Noonan was one of the few who was not realised to belong to the ICG (or possibly had information on the right people and forced them to back off) and thus he was able to continue to operate at the CIA.
Noonan had ties with Jonathon Killian, a member of Majestic-12, and knew of their plans to create a new Cold War and the bounty hunt of individuals who could stop them. Having heard of Shane Schofield's reputation, Noonan formulated a false mission for him and two Delta Specialists so that Executive Solutions would have a better chance of taking him down.
Once McCabe and Farrell were killed by ExSol forces at Krask-8, Noonan cut off communications between Schofield's team and their home base of operations. However Schofield was able to avoid beheading and escaped.
Later at the Forteresse de Valois, Noonan oversaw Elizabeth Gant and Aloysius Knight's imprisonment in Killian's Shark Pit. Once Killian had taunted Gant long enough, he ordered Noonan to behead her on the guillotine, in the hopes that her death would break Schofield. Noonan did so coldly and ruthlessly. He then left, right before Knight's escape.
While Schofield learned of M-12's plans and set out to stop the last Chameleon missile, Noonan informed Wade Brandeis, another former member of the ICG, and told him that there was a bounty on Schofield's head, and so was Knight, whom Brandeis had a grudge with. Brandeis and his team captured Schofield, Knight and Rufus just after they had successfully destroyed the last missile.
When they were brought to the Shark Pit, Noonan mocked Schofield before placing him in the same guillotine Gant had been killed in. Just as he pulled the release lever, a shuriken from Mother halted the blade's fall. In the ensuing battle, Noonan first tried to remove the shuriken to finish the job before trying to flee the Shark Pit. However he was stopped, and Schofield placed Noonan in the guillotine and beheaded him in revenge of Gant's death.