O que são os Zetsus no universo de Naruto?

Tubros Shinobi | Anime content on Instagram: "The immortal wakes up ‎• 𝐀𝐧𝐢𝐦𝐞: To your Eternity 3 ‎• 𝐒𝐭𝐮𝐝𝐢𝐨: Studio Massket, Drive ‎• 𝐒𝐭𝐚𝐭𝐮𝐬: ongoing ‎• 𝐑𝐚𝐭𝐢𝐧𝐠: ‎• 𝐆𝐞𝐧𝐫𝐞: Adventure, Drama, Fantasy, Supernatural, Psychological ‎𝐒𝐲𝐧𝐨𝐩𝐬𝐢𝐬: In the beginning, an "orb" is cast unto Earth. "It" can do two things: change into the form of the thing that stimulates "it"; and come back to life after death. "It" morphs from orb to rock, then to wolf, and finally to boy, bu