"/Assault Mode", known as "/Buster" (／（スラッシュ）バスター Surasshu Basutā, read as "Slash Buster") in the Japanese version, is an archetype of Effect Monsters that are powered-up versions of already-existing Synchro Monsters, which are Special Summoned by using "Assault Mode Activate" on the corresponding Synchro Monsters. Aesthetically, the "/Assault Mode" monsters are re-armored counterparts of the original monster. This archetype was localized to "/Assault Mode" in order to convey a greater sense of power, according to Dan Scheidegger (an Upper Deck Entertainment employee) in a post on Pojo.