The Metal Rear is the first boss in Metal Slug 5 and the second boss in Metal Slug Revolution.


"This giant slug was created by the Ptolemaic Army, using data stolen from the Regular Army. It moves nimbly despite its gigantic size."MSD info

This gigantic slug was created by the Ptolemaic Army as a prototype, using the stolen data about the Metal Slug tanks.


Metal Rear MK I: Found in Metal Slug 5. This is the original version.

Metal rear mk 2

Metal Rear MK II: This variant 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

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.


Metal Rear

Metal Rear in-game.

This gigantic slug attacks by firing its oversized Vulcan, main cannon, or performing a wheelie and crushing the player beneath its enormous treads. Metal Rear can crush an SV-001 and destroy it instantly, even when it is idle and unused. Its armor is very thick and during the battle POWs aid the player by providing Heavy Machine Gun, Rocket Launcher, or Grenades. While riding SV-001, the player may avoid being crushed by jumping before Metal Rear attempts to crush the SV-001. During Metal Rear's second phase, which is reached when Metal Rear receives sufficient damage, Metal Rear performs a wheelie, moving towards the player slowly while shooting constantly from its Vulcan.

In Metal Slug Revolution, the MK II moves faster, while continuing to use its Vulcan, main cannon, and wheelie in an attempt to crush the player. Now however, 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 crush them, and sometimes call a plane (possibly a Hairbuster Riberts) to drop parabombs or support soldiers.


  • In the game, the most common way to battle it is by using the SV-001 because using the SV-001 makes the battle easier for players.
    • For veteran players of Metal Slug or for those who are looking for a more challenging match against Metal Rear, a few are always choosing the Slug Gunner path to battle it head on.
  • For some reason, instead of a cannon shell just like the SV-001 uses, Metal Rear fires a fireball from it's cannon instead.
  • In Metal Slug Defense, before 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.
    • In the same game, before the 1.30.0 update, the BGM used while battling Metal Rear is "Heavy African". This was eventually fixed as the BGM used is now "Fierce Battle".
    • Metal Rear is also the second toughest and second most expensive unit in the Ptolemaic Army in Metal Slug Defense.
  • Metal Rear also appears in Metal Slug Attack as a playable unit requiring x80 parts to unlock. Parts can be found for this unit in Attack Stage: Elite 14-5, or by using the Event Crank.
  • It's name is a reference to the Metal Gear series.

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) | Allen O'Neil | Dai-Manji

Metal Slug 3 Huge Hermit | The Ten Commandments of Moses | Jupiter King | Sol Dae Rokker | Rootmars

Twin Ohumein-Conga | Monoeyes | Hairbuster Riberts | Hi-Do | Rugname

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 | Wall Crawler | Sand Marine | Evil Spirit Incarnate

Black Hound | Stone Turtle (unused) | Mammoth Tower | Ptolemaios (unused)

Metal Slug 6 Bull Drill | Iron Sentinel | Brain Robot | Sea Worm | Invader Queen

Invader Controller

Metal Slug 7/XX Worm Mecha | Crablops | Destroyed Crablops | Fall Mecha | The Union | Rebel Gigant | Kraken
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 | Gunslinger | Rebel Submarine | Rebel Airplane | Hilde Garn's Slug | Rocket UFO

Rebel Rocket | Hyakutaro

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

Allen Jr.

Metal Slug 3D M-3 Rocket Van | Mosque Artillery | Spider-Bot | Rebel Underground Drill | Morden Battleship | Morden Castle | Allen O'Neil | Lugus | Lieu Monster
Metal Slug Attack Pharaoh's Arc | Ball Slug | Great Mother | K-O3 Coupled Armored Vehicle | Land Blowfish | Cyclobster | Slug Square
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