Metal Slug Wiki

The Metal Rear is the boss of Mission 1 in Metal Slug 5.


The Metal Rear is a gigantic Slug created by the Ptolemaic Army using data stolen from the Regular Army. It is capable of moving nimbly despite its gigantic size.[1]


Metal Rear MK I: Found in Metal Slug 5. This is the original version.
Metal rear mk 2.png
Metal Rear MK II Yellow.png
Metal Rear MK II: This variant is only found in Metal Slug Revolution (alongside another yellow version with a lightning turret). It has the same attacks but stronger armor.
Metal Rear EX MSA idle.gif
Metal Rear EX: Another variant of the Metal Rear, it is colored green and shares a similar moveset to the original version. It appears in Metal Slug Attack.
Space Metal Rear: Another variant developed by Caroline, it is effective at dealing with Invaders. It shares a similar moveset to the EX version, and its treads can also stop weak projectiles. Appears in Metal Slug Attack.
Golden Metal Rear EX: Another variant of the Metal Rear, it is colored gold but instead of firing a burning cannon shell it fires a large rolling cannon ball. Appears in Metal Slug Attack.


Metal Rear in-game.

The Metal Rear attacks by firing its oversized Vulcan, launching fireballs from its main cannon, or crushing the player beneath its enormous treads. The Metal Rear can slam an SV-001 and instantly destroy it, even when it is idle and unused. Once the Metal Rear receives sufficient damage, it performs a wheelie, moving towards the player slowly while shooting constantly from its Vulcan.

During the battle POWs aid the player by providing a Heavy Machine Gun, Rocket Launcher, or Grenades.

In Other Games

Metal Slug Revolution

In Metal Slug Revolution, the Metal Rear MK II is the game's second boss. It moves faster while continuing to use its Vulcan, main cannon, and wheelie in an attempt to crush the player. its Vulcan fires a spread of 4 bullets, and its main cannon fires rapidly in the direction the player is standing (up to 8 shells total). It will also occasionally run up to the player in an attempt to ram them and sometimes call a plane (possibly a Hairbuster Riberts) to drop parabombs or support soldiers.

Metal Slug Defense

Prior to the 1.19.0 update, Metal Rear is the toughest unit in game, with 18750 HP at Level 30, before its record being broken by Brain Robot and Rootmars. The Metal Rear is also the second toughest and second most expensive unit in the Ptolemaic Army.

Originally, the BGM used while battling the Metal Rear was "Heavy African". This was eventually fixed by swapping it with "Fierce Battle" in the 1.30.0 update.

Metal Slug Attack

The Metal Rear returns as a Super Rare unit. Parts can be found for this unit in Attack! mode Elite Stage 14-5 or by using the appropriate Crank. Multiple variants are introduced.


  • Its name is a reference to the Metal Gear series.
  • The Metal Rear (and the entire first mission) is listed as the 4th boss in its official concept art. The game's debug level select refers to it as the 3rd boss.


  1. Metal Slug Attack in-game description.
Metal Slug 5
Heroes Marco RossiTarma RovingEri KasamotoFio Germi
NPCs POWRumi AikawaMadoka AikawaHyakutaro IchimonjiPtolemaic Army
Enemies Ptolemaic InfantryFanaticsGrenade SoldierBazooka SoldierShielded SoldierBikersSniperMortarNativesCommanderMasked SoldierWall DroneUnitsSensor MineBatMaggotJellyfishSquid
Enemy Vehicles Di-CokkaNop-03 SarubiaGirida-OM-15A BradleyJet Hammer-YangMini-Sub 88LandseekA.P.C.R-ShobuMH-6S MasknellFlying TaraEaca-BHover VehicleHover UnitPtolemaic SlugPtolemaic Saucer
Bosses Metal RearShooting RayScreamerSand MarineAvatar of Evil
Mini-Bosses: Black HoundGaia Elephant
Weapons Heavy Machine GunRocket LauncherShotgunEnemy ChaserIron LizardSuper GrenadeDrop ShotTwo Machine GunsGrenade
Slugs SV-001Slug FlyerSlug MarinerSlug GunnerSlug MobileAugensterm
Missions Heavy AfricanWindy DayIntrigueRun ThroughLast Ditch Resistance
Other TransformationsRA-TTT
Unused Flame ShotPtolemaiosStone TurtlePink ZombiesThe Jet • "Achilles" • "Tabomba"
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