Kinniku Ataru is a character from the manga and anime series Kinnikuman and its sequel Kinnikuman Nisei. He is the older brother of Kinniku Suguru, the protagonist of the series, and the eldest son of the Royal Kinniku Family. In his childhood, Ataru could not endure the strict training his parents put him through and ran away from home. Because this happened before Suguru's birth, he was never aware of Ataru's existence. However, Ataru watched over his little brother as he fought against Evil Choujin and taught him the value of friendship. He returned after 25 years during the Survivor Match for the Kinniku Throne. As an experienced Senpai Choujin, he is viewed as an older brother to not only Suguru but also the other Idol Choujin. Ataru possesses what he refers to as True Friendship Power (真・友情パワー, Shin Yuujou Power) and his own Kajiba no Kuso Djikara prototype called Gouka no Koso Djikara (業火のクソ力, Fiery Inner Strength).