I can't believe that these creatures invade among us. My mercenaries, please you are required to accomplish missions about saving our base and the whole humanity.
~ General Baxter
Space Monsters (also known as Aliens, Intruders, Invaders, Monsters or simply Space Aliens) are lifeforms of an alien race from their own homeworld, Xenoverse. As hostile species, they serve to be the titular antagonists who can invade and enormously cause the Long Passage Incident under the control of their masterminds (or ringleaders in some point) during the events of an upcoming top-down shooter game. But some heroic people will investigate these cases from them in order to reach some goals.