There are two types of characters that the player controls. "Mortals" gain skills by leveling up, but can benefit from additional skills by equipping accessories. "Immortals" do not know any skills initially, but instead gain skills by "linking" with a mortal character that is currently part of the battle formation, earning skill points in battle towards complete learning of the skill. Immortals can also learn skills from accessories by equipping them in the same manner, much like the ability point system of Final Fantasy IX. Once a skill is learned, the player can then assign these skills to a limited number of skill slots, initially starting at three but able to be expanded via "Slot Seed" items or certain skills. Immortals also have the ability to automatically revive in battle should they lose all their hit points; however, if the entire party is downed, including the immortals, the game will be over.