Disgaea: Hour of Darkness PS2

Prince Laharl has awakened from a long sleep and has discovered his father's death and now he thirsts for vengeance and aiding him in this is the ability to unleash over 100 mind-blowing spells, a New Formation Attack System which allow up to 4 of your characters to do quadruple the damage on one enemy, over 150 character classes and monsters for customizing your army.