Ethan Slater chats with ET’s Denny Directo at the ‘Wicked’ premiere in Los Angeles. The actor, who plays Boq in the film, opens up about sharing this journey with his ‘incredible’ girlfriend and co-star, Ariana Grande. He also reflects on bringing iconic characters to life, from Broadway’s ‘SpongeBob’ to Boq in ‘Wicked.’ ‘Wicked’ flies into theaters on Nov. 22.