Metal Slug Wiki

The Formor is the first boss of Metal Slug Advance.


The Formor is a Super Vehicle developed by the Rebel Army. It is twice as big as a regular SV-001, and is painted green. The Formor also move faster than the Regular Army's Slugs despite its larger size.


Formors first phase will involve it firing its main cannon, autocannons and running over the player. In its second phase, after losing half of its health, it will also try to jump on top of the player.

As this tank attempts to run over the player, its bottom is revealed exposing a weak point, as indicated by a minor explosion every time it gets hit there, allowing the player to deal extra damage.

Due to its low health, Formor can easily be beaten by using the Metal Slug or Shotgun acquired earlier in the level. Moreover, the player can also simply use grenades and the handgun. The Black Hound, Armor Piercer, and Crawler cards are also effective and will make short work of this boss. Defeating Formor again in a fast time will unlock its Card.


Formoranim.gif Formor: The original Rebel Army Super Vehicle.
Formor+: A red-colored variant of the Formor with increased combat capabilities. Appears in Metal Slug Attack.
Golden Formor: A golden variant of the Formor with even higher combat capabilities than its "+" version, capable of jumping a greater distance which also deletes most projectiles and launching fireballs with greater distance. Appears in Metal Slug Attack.
Frozen Formor: A white-colored variant of the Former with snow cartridge for battle in heavy-snowfall areas, it boasts a super snowball rolling technique.


  • Formor is a misspelling of Fomor.
    • Fomor is an English call for Fomorians .
    • Fomorians are a supernatural race in Irish mythology. They are often portrayed as hostile and monstrous beings who come from the sea or underground.
  • Even though the Formor is much smaller than the Metal Rear, they both seem to have around the same amount of HP.
  • Metal Slug Advance's card indicates that it is 3 times as big as the normal Metal Slug, though this has been disproved.
  • it also appears in Metal Slug Defense as an affordable unit with stars in the 2015 Christmas event.
  • It also appears in Metal Slug Attack as an event unit, on the Extra Ops: Boy Memories, its parts can be obtained through the POWs rescued in a random stages... Also, Formor is the only rare unit in Metal Slug Attack which is a boss.
  • To date, Formor is the smallest boss in the entire Metal Slug franchise.


Metal Slug TetsuyukiHairbuster RibertsTani OhShoe & KarnIron NokanaHi-Do
Mini-Bosses: Mini-BataAllen O'Neil
Metal Slug 2/X The Keesi II / Iron Nokana MK II (X) • Aeshi NeroDragon NosukeBig ShieeHozmiRugname
Mini-Bosses: Mosque ArtilleryThe Keesi II (X) • Karn (X) • Allen O'NeilDai-Manji
Metal Slug 3 Huge HermitMonoeye UFOJupiter KingSol Dae RokkerRootmars
Mini-Bosses: Twin Ohumein-CongaMonoeyesHairbuster RibertsHi-DoRugnameFake RootmarsClone Incubator
Metal Slug 4 Brave GuerrierToschka DalanueThe IronBig JohnSea SatanAmadeus Mother Computer
Mini-Bosses: Mecha Allen O'Neil
Metal Slug 5 Metal RearShooting RayScreamerSand MarineAvatar of Evil
Mini-Bosses: Black HoundStone Turtle (unused) • Gaia ElephantPtolemaios (unused)
Metal Slug 6 Bull DrillIron SentinelBrain RobotElder CentipedeInvader King
Mini-Bosses: Invader ControllerKing's Cocoon
Metal Slug 7/XX Iron Death WormCrablopsDestroyed CrablopsFall ClimberThe UnionRebel GigantKraken
Mini-Bosses: Scrap TowerBig Gate
Metal Slug: 1st Mission Rebel VTOLRebel TrainMacbaRebel ZeppelinElectromagnetic CraneWeapons Port BossMetal Strider
Mini-Bosses: Facility ElevatorMacbaRebel Truck
Metal Slug: 2nd Mission Big BerthaTerrain CarrierRebel ReactorMacbaRebel SubmarineTani OhWiredRebel AirplaneMetal StriderRocket UFO
Mini-Bosses: Power GeneratorsRebel RocketHyakutaro
Metal Slug Advance FormorEmain MachaKaladgolgThe Keesi IIICabracan
Mini-Bosses: Allen Jr.
Metal Slug 3D ParachuetruckMosque ArtillerySpider-BotUnderground Cruise MissileMorden's BattleshipMorden's CastleAllen O'NeilLugusLieu
Metal Slug Attack Pharaoh's ArcPtolemaiosBall SlugGreat MotherMars GigantalosK-O3 Coupled Armored VehicleLand BlowfishCyclobsterSlug SquareZoni DolomaQuadro JumperDenturionD-GuFortmeranianRock MoleGiant CopterEt A OmnisVortexDigger BaseCrusty LegsArmored CrawlerQueen Big Snail7000 Class LocomotiveRiviere HyllMetal Fusioner No.223Drum SlugMars WolfSea DragonTetsujin SquadLa TorneGigantnoidDark GateKnight TankImpact CannonDive Assault Cannon Andrew
Mobile games Rocket Control RoomUnknown AlienHellfireSpiderbotCyclopsMega Laser TurretMars Battle UFOM-32 Water Carrier PlaneKouraiAlien Floating Structure