The creative team behind Netflix’s record-breaking animated hit “KPop Demon Hunters” pulled back the curtain on their demon-slaying spectacle in a new behind-the-scenes video released Friday.

Ahn Hyo Seop made his first-ever appearance on a music variety show—and Park Bo Gum made sure he didn’t forget it. On the July 11th episode of the KBS music show The Seasons: Park Bo Gum’s Cantabile, ...