The /Assault Modes, known as /Busters in the OCG, are a series of monsters, that are powered-up Effect Monster versions of already-existing Synchro Monsters, Summoned by using "Assault Mode Activate" on the corresponding Synchro Monster. Aesthetically, the /Assault Mode cards are re-armored counterparts of the original monster. There are also some support cards to Assault Mode Activate. Those cards help to bring Assault Mode Activate to its maximum potential and are powerful cards in their own right, often having high ATK for their Level and helping the user control the field.