Mark C. MacKinnon is a Canadian entrepreneur and designer of roleplaying games.MacKinnon is the founder of Guardians of Order (GoO), and has produced work in the anime genre. His initial release, Big Eyes, Small Mouth, led the company to aggressively license anime properties. With the help of David L. Pulver and others, MacKinnon gradually turned the Tri-Stat System into a universal system, including martial arts, superhero, cyberpunk and urban fantasy games.