Cupcakes are important items in the Mario games, specially in Mario Mart where they cost a lot of money. During the RPG games Cupcakes heal 100 HP. Bowser secretly has a Cupcake below his pillow. However, not everybody likes Cupcakes, as Evil Guy hates them, and he always attempts to destroy them. It turns out he hates them because one day he had to go the bathroom while eating Cupcakes, he couldn't make it, so he blamed the Cupcakes.
During the SMK TV there was a cup named Cupcake Cup. Many fans laughed at this, and some even died of laughter. There was also a Cupcake eaters organization.