Chapekku is a minor character in the long-running anime series 'Doraemon'. The series, which focuses on the adventures of a robotic cat from the future named Doraemon, features Chapekku as one of the many unique gadgets Doraemon uses to help Nobita Nobi, the main protagonist. Chapekku is a hat that allows its wearer to switch heads with anyone else, leading to humorous and problematic situations. This gadget, like many others in the series, serves as a plot device to teach life lessons and explore the consequences of technological reliance.