Stanley is a bugman. Donkey Kong has taken refuge in his greenhouse and it is now up to Stanley to stop the ape from stirring up any more insects that will soon destroy his flowers. Stanley saves the flowers by spraying bug spray on Donkey Kong.
Stanley the Bugman made an appearance in an episode of the Donkey Kong segment of Saturday Supercade titled "Greenhouse Gorilla", as well as a trophy in Super Smash Bros. Melee and a sticker in Super Smash Bros. Brawl.
Donkey Kong hangs from vines at the center of the screen, and the player-controlled Stanley the exterminator runs and jumps on platforms beneath him. Stanley can fire bug spray at both Donkey Kong and insects flying around the levels.
A level is completed by continually using bug spray on Donkey Kong, forcing him to the top of the screen, or by killing all of the bugs. A super spray can on the vines falls down when Donkey Kong is forced past it. The super spray only lasts for a limited number of shots, but it pushes Donkey Kong upward at a much faster rate, making it easier to complete the level. It only appears at the start of each life.