Mario's anger Emotion is Po wearing Mario's cap. She is usually very irritated. She controls Mario's mind by mashing the GameCube controller randomly, possibly explaining Mario's random, cartridge-tilt-esque spasms when the plumber is angry.
Mario's hunger Emotionis Tinky Winkywearing a chef's hat. He is perpetually hungry, and probably responsible for Mario's constant craving of spaghetti. He gets lazy sometimes and burps a lot. His laziness explains Mario's lazy attitude and hatred of exercise.
Mario's smartness Emotion is Dipsywearing a dunce cap. He is, somewhat unsurprisingly, very dumb. He operates Mario's mind by randomly pressing buttons, explaining Mario's retardation and unfitting reactions to situations. They also share the same smartness and the same happiness.
Mario's gayness Emotion is Laa-Laawearing a hat with a wick and a fuse. He acts homosexual and flamboyant very often. To control Mario, he humps the GameCube controller. He is the most likely cause of Mario's "FABULOUS" behavior and frequent nudity.