Kukaku Rakukakuka

Оригінальне ім’я: 쿠카쿠 라쿠카쿠카

Kukaku Rakukakuka is a Regular who participated on the 2nd Floor tests. He was one of the people who were "stored" in Khun's bag throughout the first "Deathmatch" Test. He participated in the Crown Game with his teammates Blarouse and Grey, and helped Khun by attacking the other Regulars. He was then assigned to the Light Bearer position.