Metal Slug Wiki
Metal Slug Wiki

The Mars Gigantalos is a massive single-pilot operated Tank developed by the Professor during his time in the Rebel Army, but was made reality when he joined the Martians. It first made its debut on the game's event titled 'Try Line 3rd', where it was also a playable unit.


"The Professor designed it while he was with the Rebel Army, but this mysterious robot could not have been completed with Earth technology alone. It was finally completed on the distant planet of Mars. Based on the telepathic capabilities of Mars People, pilots sync consciousness with the robot to control the unit. It switches to its second form after taking a certain amount of damage, but it shakes a lot and is liable to make pilots nauseous (according to the Professor)."

~Metal Slug Attack in-game description.


In Metal Slug Attack's event, the Mars Gigantalos was the featured unit of Try Line 3rd's Campaign Box Crank. It is a massive contraption created by the Professor, and it slowly moved towards the enemy. Enemies in range would be either met with by energy saws, and those who were too close were met with energy pulses. The Professor was also capable of moving the Gigantalos to the front lines, where it would deploy its Gigan Arc Energy to stun enemies in range, and would also regenerate itself in the process.

Attacks that would have caused the Gigantalos to be stunned would prompt the Professor to activate its' countersystem, where it would absorb the incoming stun attacks and make itself briefly invulnerable, deleting incoming projectiles that struck it in the process. If the first form was destroyed, the Professor would detach the "head" from the body, before moving around and firing beam rings at enemies below him, and could not be attacked by enemies. After a set amount of time, he would slowly drift upwards and leave.


Mars Gigantalos - The very first and original version, piloted by the Professor.
Christmas Gigantalos - A fairly incomplete Gigantalos version, with the head having been created. It is piloted by Percier and can also fire a beam ring like the original version, but was also modified to move faster and contains a hatch to drop poison bottles from above.
Golden Gigantalos - An upgraded version of the predecessor which is painted gold and piloted by Marty. It's weapons have been enhanced. Marty piloting the Gigantalos has given it improved synchronicity, and as a result it is capable of restoring its body when it has remained in its second form for some time.
Mars Percier - A pink version of the Mars Gigantalos, piloted by Percier. The attacks are similar to the original, except when the body is destroyed, Percier hovers around the battlefield dropping poison bottles on enemies.
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