Dirge of Cerberus: Final Fantasy VII

Set three years after the events of Final Fantasy VII, Dirge of Cerberus centers on Vincent Valentine, who is the main playable character, although Cait Sith is also playable for a single level. The game's main antagonists are the members of an organization named Deepground, who are planning to use a creature known as Omega to destroy all life on the Planet. (wikipedia.org)