Main Antagonists

Rise of the Alliance

 * Rowenia Queen
 * Queen Nelle

Junior Alliance

 * Damian Queen

Quicc

 * Hero Guy (Villain Guy)
 * Quicc

Spirit of Evil

 * V/Foarme
 * Quicc

Alliance Killer

 * Lord Shade

Ghost Protocol

 * Quicc
 * Zephyr

Guardian: Resonant Hero

 * Eccerris

Allied Forces: WAR (Maybe Incomplete List)

 * Mink
 * Harry (Wiz)
 * Snap
 * Yaneli
 * ShapeShifter

Junior Alliance: Upgraded

 * Queen Nelle
 * Zamasu

Melee: Hidden Potential

 * Doctor Gero
 * Ghetsis
 * Quicc