Mōretsu Atarō (もーれつア太郎, "Fierce Atarō") is a Japanese comedy manga series written by Fujio Akatsuka. It was serialized from 1967 to 1970 in Weekly Shōnen Sunday. Two anime television adaptations were produced by Toei Doga (now known as Toei Animation), and aired TV Asahi (then called NET TV). Manga has 90 episodes.