Metal Slug Wiki
Metal Slug Wiki

The Rebel Gigant is the sixth boss from Metal Slug 7.


A huge mech which was developed by the Future Rebel Army and brought into present day. It was specifically designed to be controlled by Allen O'Neil. Despite of its huge body and very tough armor it possesses great agility. It is also equipped with various weaponry such as homing missiles and floating mines.


Its attacks vary from firing rockets from the shoulder to jumping off screen and sliding into the player's Gigant. It is fortunate that death here allows another Slug Gigant to be employed after respawning (the Slug Gigant's destruction kills the player), as the Rebel Gigant would easily defeat the player otherwise. Note however it is possible to fight and defeat this boss on-foot using nothing but a pistol through a War Room mission.


Ptolemaic Army
Ver. PM:: It has been somehow improved over its rebel counterparts. As its standard attack, it expels out 10 floating mines from its mine launcher, these mines will detonate when an enemy unit touches it or the set time has passed. Its special attack is an enhanced version of the original Rebel Gigant, the Rebel Gigant(P.M) crouches before charging forward, dealing massive damage against anything it hits.
Golden: The golden version whose floating mines from its mine launcher detonate burning fire when an enemy unit touches it or the set time has passed. Its special attack burns the ground by scraping with its giant feet, and also makes a red shockwave attack.
Rebel Army


Original: The original variant ridden by Allen O'Neil himself, it appears in both Metal Slug 7 and Metal Slug XX.

Rebel Gigant MK II MSA idle.gif

MK II: The upgraded variant of the predecessor, ridden by an enraged Allen O'Neil, appears only in Metal Slug Attack.
Rogue Gigant by alejoelcuervo-dc3srmr.png
Rogue Gigant: Another variant of the predecessor, this time being ridden by Allen Jr.. It fires red floating mines that emit fireballs instead. Only appears in Metal Slug Attack.
Element Gigant: Another variant ridden by Allen Jr.. It utilizes the Rebel Army "elements" of ice and fire in its attacks as requested by him. Only appears in Metal Slug Attack.


  • This is the only time Allen is not holding his M60 as a weapon, and has his hands on his hips.
    • Though after he is defeated, he can be seen firing it in defeat.
    • This is also the second time Allen appears as a boss, rather than this usual mid-boss status.
  • In Metal Slug Defense. The Rebel Gigant was an unlockable unit in 1.32.0 Event world Release the Giant sleeping weapon. The Rebel Gigant's special move is dashing forward and crushing an enemy with its size, this attack appears in both MSD and MSA. The unit is now purchasable in the Shop for 500 Medals.
    • Also, The Rebel Gigant's official name was confirmed in MSD 1.32.0 update.
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)

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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

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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

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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