Mr. Big is a boss fighter from SNK Playmore's Art of Fighting fighting game series.

According to his official biography, by the King of Fighters timeline, Mr. Big was born July 4, 1963. He stands 1.87 m (6 ft 1 in) and weighs 81 kg (178 lb). His blood type is B. He has no hobbies, his favourite food and sport are unknown, and he considers Southtown his most important thing. He hates "pests," and his fighting style is Escrima.

Mr. Big has been involved with the mob for as long as he can remember. He made it big in Southtown, a city as seedy and corrupt as he is. Rather than pay tribute to Geese Howard, boss of all organized crime in town, Mr. Big joined Geese's organization, and quickly rose to become his right-hand man.

While Geese was out of town on "business," he left Big in charge. Big secretly feared Takuma Sakazaki, the master of Kyokugenryu Karate, so he ordered the kidnapping of Takuma's daughter, Yuri, and threatened Takuma into working for him. Unfortunately, the plan backfired when Ryo Sakazaki and Robert Garcia fought their way through Southtown's crime to find both of them, beating Big senseless to rescue Yuri and Takuma.

Big pondered informing Geese of the incident upon his return, but Geese soon grew embroiled in a situation involving the Bogard brothers, and Big wisely kept his mouth shut.

In 1996, Geese brought Mr. Big and Wolfgang Krauser to The King of Fighters, and revealed that he was after the Orochi power following the tournament's dramatic conlusion. Enraged, Mr. Big had a sniper take a shot at Geese, but the plan failed, and Mr. Big bailed out.

Big has not been seen since; he may be among the casualties when the Zero Cannon fired on Southtown in 2000.