"Coach", known as "Enthusiastic" (熱血 (ねっけつ) Nekketsu or 열혈 Yeolhyeol) in Japan and Korea, is a series of FIRE (EARTH in the anime) Beast-Warrior monsters used by Devon Knox in the Yu-Gi-Oh! ZEXAL anime. The series focuses on Xyz Summoning "Coach King Giantrainer".