The Popestar Tour was a concert tour by Swedish rock band Ghost in support of their second EP, Popestar. The EP was released on September 16, which coincided with the first show of the tour in Rochester, New York. They toured Europe in the spring of 2017, followed by a tour as openers for Iron Maiden. During the final show on September 30, 2017, Papa Emeritus III was dragged off stage during the final song. A new incarnation called "Papa Emeritus Zero" was introduced on stage, later named "Papa Nihil".