Kouji Ibuki is an employee of FIVA's United Sanctuary Branch and the coach of Team Demise. He uses a Link Joker deck. He is a classmate of Toshiki Kai & Taishi Miwa back when they were in elementary school. When he was younger, he enjoyed Vanguard. However, the Deletors corrupted those memories and he set out to destroy Vanguard and consequentially both Earth and Cray. At the end of "Cardfight!! Vanguard Movie: Neon Messiah", Harmonics Messiah returns Ibuki to normal.