Oozaru (大猿 Ōzaru, lit. Great Monkey) is a fictional transformation in the Dragon Ball manga series and anime adaptation, written by Akira Toriyama. Originally in the series, the Oozaru was a transformation for the main character named Son Goku, being a parody of a monkey king character named Sun Wukong from the novel The Journey to the West. In the series, the Oozaru is a giant ape that Son Goku turns into when he looks at a full moon, similar to that of a werewolf. Later in the series, the Oozaru is discovered to be a transformation that is only accessible to characters who possess heritage from the fictional race called the Saiyans.