Cuphead is a run and gun video game developed by Studio MDHR and released in 2017. It’s heavily inspired by cartoons from the 1930s, and it’s known for its meticulously hand drawn visuals and jazz-influenced soundtrack. It was the first time the brothers had worked with traditional animation and live music, and it became a labor of love and a huge success.
The Cuphead Show is an animated series that follows the misadventures of impulsive Cuphead and his easily swayed brother Mugman. They live on Inkwell Isle with their squabbling grandfather and caretaker, Elder Kettle, in a teapot-shaped cottage. The two love to roll the dice and often get themselves into trouble. One day, they convince Elder Kettle to let them go to the Devil’s casino, unaware that it’s a front for the devil’s collection agency. He offers them a deal: if they collect his soul contracts from his debtors, he will spare their lives.
The characters in the game don’t really have any determined or explained ages. Despite their childlike behavior, they partake in adult activities such as smoking and alcohol consumption. They also have hitboxes that are smaller than those of adult humans, making them appear younger. But there are some clues that point to the fact that Cuphead and Mugman are actually adults. A fan asked Studio MDHR on Twitter how old the brothers are and the studio replied, “Maybe more like Kidults?” which is pretty close to what we think.