Metal Slug Wiki
Metal Slug Wiki

ET A Omnis are biological superweapons in use by the Invaders to attack Earth. They made their first debut in the game's event titled 'Try Line 12th', where the boss can also become a playable unit.



In Metal Slug Attack's event, this boss is fought at the last stage. It takes on the appearance of a floating multi-colored blob, moving slowly across the battlefield. Upon detecting enemies, it will shapeshift into various forms in order to attack the enemy depending on their distance from it.

Downpour prompts the Invader to shapeshift into a monolith or Giant Hunter Walker against close and distant enemies respectively. In its monolith form, it rapid-fires numerous hieroglyphs, and shoots out energy shards from its "mouth" in its Giant Hunter Walker form.

Gatekeeper prompts the Invader to shapeshift into a massive slug-like creature, before opening its chest to reveal numerous laser beams that quickly decimate any enemy they make contact with, possessing more range than Downpour.

ET A Omnis' attacks can also recover its health based on the damage it deals, and can also weaken enemy armor significantly to allow it and its allies' attacks to deal more damage.


Et A Omnis MSA idle.gif Et A Omnis: The original biological superweapon.
BlobSphere.gif Blobsphere: A bio-weapon variant apparently inspired from the original. It is a purely defensive weapon, only used for defending bases or stalling for time. It is capable of healing itself and damages enemies by generating sharp blades and flinging them towards the enemy.



  • Its name is Latin for "and from everything", which references its ability to transform into other inhuman Invaders.
Metal Slug Tetsuyuki | Hairbuster Riberts | Tani Oh | Shoe & Karn | Iron Nokana | Hi-Do

Mini-Bata | Allen O'Neil

Metal Slug 2/X The Keesi II / Iron Nokana MK II (X) | Aeshi Nero | Dragon Nosuke | Big Shiee | Hozmi | Rugname

Mosque Artillery | The Keesi II (X) | Karn (X) | Allen O'Neil | Dai-Manji

Metal Slug 3 Huge Hermit | Monoeye UFO | Jupiter King | Sol Dae Rokker | Rootmars

Twin Ohumein-Conga | Monoeyes | Hairbuster Riberts | Hi-Do | Rugname | Fake Rootmars | Clone Incubator

Metal Slug 4 Brave Guerrier | Toschka Dalanue | The Iron | Big John | Sea Satan | Amadeus Mother Computer

Mecha Allen O'Neil

Metal Slug 5 Metal Rear | Shooting Ray | Screamer | Sand Marine | Avatar of Evil

Black Hound | Stone Turtle (unused) | Gaia Elephant | Ptolemaios (unused)

Metal Slug 6 Bull Drill | Iron Sentinel | Brain Robot | Elder Centipede | Invader King

Invader Controller

Metal Slug 7/XX Worm Mecha | Crablops | Destroyed Crablops | Fall Mecha | The Union | Rebel Gigant | Kraken

Scrap Tower | Big Gate

Metal Slug: 1st Mission Rebel VTOL | Rebel Train | Macba | Rebel Zeppelin | Electromagnetic Crane | Weapons Port Boss | Hilde Garn

Facility Elevator | Macba | Rebel Truck

Metal Slug: 2nd Mission Big Bertha | Terrain Carrier | Rebel Reactor | Macba | Rebel Submarine | Tani Oh | Wired | Rebel Airplane | Hilde Garn's Slug | Rocket UFO

Power Generators | Rebel Rocket | Hyakutaro

Metal Slug Advance Formor | Emain Macha | Kaladgolg | The Keesi III | Cabracan

Allen Jr.

Metal Slug 3D Parachuetruck | Mosque Artillery | Spider-Bot | Underground Cruise Missile | Morden's Battleship | Morden's Castle | Allen O'Neil | Lugus | Lieu
Metal Slug Attack Pharaoh's Arc | Ptolemaios | Ball Slug | Great Mother | Mars Gigantalos | K-O3 Coupled Armored Vehicle | Land Blowfish | Cyclobster | Slug Square | Zoni Doloma | Quadro Jumper | Denturion | D-Gu | Fortmeranian | Rock Mole | Giant Copter | Et A Omnis | Vortex | Digger Base | Crusty Legs | Armored Crawler | Queen Big Snail | 7000 Class Locomotive | Riviere Hyll | Metal Fusioner No.223
Mobile games Rocket Control Room | Unknown Alien | Hellfire | Spiderbot | Cyclops | Mega Laser Turret | Mars Battle UFO | M-32 Water Carrier Plane | Kourai | Alien Floating Structure