Mr. McMahon is the leader of The Hang 5. He is very eccentric and often makes plans for his team. He is sometimes talking on his conch phone and often lets J.C. do certain things for him. He likes to drink fish's milk and has gone as far as to imagine himself drinking the milk from a fish. He hates arguments and always tries to stop them from happening. He is a congenial fellow and is wise most of the time. He is always good mannered and can be serious when he wants to be.