(Humanity has yet to see what life is like on every other planet. Light-years away may be something that is truly "alien" to us. A species so resilient and dangerous, one could thought of it from a nightmare. Yet... It has come... That species, does exist)

Alarms are heard from all around a city. A voice heard from the speakers for the civilians to run to the nearest bunker so that the one attacking doesn't get them. Lines of tanks fire at the massive unidentified terrestrial object, followed by jets firing their missiles and artillery at the creature. Unfortunately, non of it seems to be doing anything against it. It may be staggered by the attacks, but it has suffered no real damage. The smoke clears to reveal the monster from hellish offworld planet. Terragnus.

Terragnus: HRRAAAAAAAAGGHH!!