TV-Series
Description
Ataru's father is a recurring supporting character in Urusei Yatsura, known simply as Ataru's father. He is an ordinary Japanese salaryman who lives with his wife and son in a modest house in the town of Tomobiki. At home, he is frequently seen wearing traditional Japanese clothing, while his work as an office employee remains mostly in the background.

His personality centers on a strong desire for a quiet, peaceful domestic life, which the constant chaos around his son makes nearly impossible. He is a mild-mannered man with little authority in his own household. His wife regularly overrules him, and as a father he commands little respect. When situations become critical, he tends to avoid confrontation and prefers to hide behind his newspaper rather than get involved directly. He is often exasperated by Ataru and is openly critical of him, viewing his son as irresponsible and good for nothing. At the same time, he is not a cold or cruel parent; he genuinely cares about his family, and the series shows that he is attached to his son despite his complaints.

His main motivation is simply to live peacefully and keep the family household functioning. The frequent destruction of the family home, often caused by Lum's electric discharges, forces him to take out new loans to pay for repairs, adding a constant layer of financial worry to his life. He laments the trouble that Ataru and Lum's relationship brings, and much of his screen time involves reacting to the latest disaster with resignation rather than taking decisive action.

In the story, he serves as part of the Moroboshi household and provides a grounded, ordinary adult presence against the extraordinary events happening around his son. His role is largely domestic and comedic: he reacts to destruction, scolds or laments Ataru's behavior, and deals with the many strange visitors and situations that the family encounters.

His key relationships shape his character. With his wife, he is submissive and unable to stand up to her. With Ataru, he is critical and frequently disappointed, though still attached. His wife once remarks that Ataru's indecisiveness comes from his father, suggesting that his own personality has influenced his son. With Lum, he is notably warmer: despite the damage she causes to the house he is still paying off, he treats her with affection and comes to cherish her like his own child. He also shows the same fondness toward Ten, Lum's young cousin.

Over the course of the series, his characterization remains fairly consistent. He rarely takes center stage and mostly appears within the domestic ensemble, but he is consistently shown as a family man whose exasperation never fully cancels out his care for those around him.

In terms of abilities, he has no special powers or combat skills. He is defined by the ordinary traits of an average office worker: going to work, reading the newspaper, wearing casual traditional clothes at home, and enduring the constant turmoil around him with weary patience.