Ultimate is one of the actions that is a part of the Royalgaurd Style in Devil May Cry 3. When executing this action, Dante will create an all-impervious force field that cannot be broken and transfers his life force into it.
When executing this move, Dante will pull one his hands back and touch his devil arm by piercing his fingers on it, and with the second he puts his hand in front of him and a tri-circular yellow field will project. When this shield is damaged, the power goes into Dante's health, reducing his death. However, if a boss, such as Vergil threatens it, the field will shatter and reduce Dante's vitality. Also the time is limited to compensate for the advantages the move gives.