The gates of Castle Grayskull officially opened in Hollywood as Amazon MGM Studios and Mattel celebrated the world premiere of Masters of the Universe at the TCL Chinese Theatre.

Nicholas Galitzine, Camila Mendes, Idris Elba, Alison Brie, Morena Baccarin, director Travis Knight, and special guest Dolph Lundgren helped bring Eternia to life before guests continued the celebration at The Hollywood Roosevelt.

Masters of the Universe opens only in theaters June 5.