Martin Birding is a secondary character in The Adventures of Dr. McNinja. His was a college student at Cumberland and was friends with Dr. McNinja. He possesses the ability to increase his size and become a large purple "literal fantasy ogre". However, his intelligence drops greatly when he is in "Monster Mode" and is easily duped. He currently is the mascot and the presumed founder of the local store Monster Mart.

He is a former member of the Cumberland Mafia, beginning sometime before the events of Monster Mart and ending during them.