Zandik, better known as Il Dottore and by his codename The Doctor, is a major antagonist in the 2020 action role-playing fantasy video game Genshin Impact, appearing as the main antagonist of "Chapter III", and the overarching antagonist of Inversion of Genesis and the Tatara Tales quest series. He also serves as the main antagonist of the game's accompanying prequel manhua series of the same name. Il Dottore is the Second of the Eleven Fatui Harbingers.