Ataru Moroboshi is the protagonist of the anime series 'Urusei Yatsura'. Known for his lecherous and lazy nature, Ataru is a high school student who often finds himself in comedic and chaotic situations due to his interactions with alien beings. His life takes a dramatic turn when he accidentally becomes engaged to Lum, a beautiful alien princess, after a game of tag. Despite his tendency to flirt with other women, he often shows a caring side, especially towards Lum. Ataru's character is central to the series, driving much of the humor and plot development.