Academia

 Academia' (アカデミア, Akademia'') is a organization consisting of Fusion duelists. They had a war against Xyz duelists and is the reason for Heartland City's destruction. They are enemies with The Resistance.'''

Members

 * Sora Shiun'in
 * Reo Akaba
 * Yūri
 * Serena
 * Barrett
 * Dennis Macfield
 * Obelisk Force

Enemies

 * Yūto
 * Shun Kurosaki