Metal Slug Wiki
Metal Slug Wiki

The Big Gate is the penultimate boss of Metal Slug 7/XX.

Information

This device is sent from the Future by Morden's own Rebel Army (much to present Morden's surprise), and it's basically a giant, hovering warp portal. Its powers are not limited to summoning Future Rebel infantry and units, but is also able to shoot fast volleys of plasma to the enemy. Before its destruction, it summons the Kraken to rescue Morden.

Despite Morden standing there and commanding during the fight, the player cannot damage him in any way.

In other games

Metal Slug Defense

The Big Gate appears in the Battle Cats collaboration event. Morden attempted to bring the Kraken to the present but somehow brought the Battle Cats who dragged him off-screen.

Metal Slug Attack

The Big Gate makes its playable debut in the "Next One" Extra Ops. It serves as both a Future Bazooka spawner and as wall from enemy attacks. The Big Gate can be unlocked by purchasing unit parts in the Battle Shop or by completing Standard 8-6 in "Attack!" mode.

Story-wise, various Rebel Soldiers use the Big Gate to transport Future Rebels and weapons to the present. This includes Nova, a future robotic clone of Vita.

Metal Slug Infinity

Named the Time Slug, it was originally used by Morden in a skirmish before it got destroyed and sent everyone in a parallel universe. Those against the Regular Army joined forces with them to escape to the original universe.

The Time Slug also provides what is called "Returning", where the player's team are transported a few stages back to avoid being overwhelmed. Returning boosts the character's stats, increases the gold regeneration rate, and rewards medals, Gems, and Piece Boxes. The drawback of Returning is that it fully resets the character's levels and the player's gold amount.

Variants

Big Gate: The original.
Golden Big Gate: A golden-plated variant of the original. It is still affiliated with the Rebel Army, but the future it comes from is unknown. Rather than deploying future Rebel Army personnel to assist in battle, it instead deploys circular saws to attack enemies, coupled with its own plasma attacks. Appears in Metal Slug Attack.
Metal Slug 7/Metal Slug XX
Heroes Marco Rossi | Tarma Roving | Eri Kasamoto | Fio Germi | Ralf Jones | Clark Still | Leona Heidern*
NPCs Cynthia Hartnett | POW | Rumi Aikawa | Madoka Aikawa | Hyakutaro Ichimonji | Donald Morden | Allen O'Neil | Rebel Army | Future Rebels | Martians | Announcer
Enemies Fanatics | Grenade Soldier | Bazooka Soldier | Shielded Soldier | Bikers | Rebel Rifleman | Mortar | Gatling Soldier | Future Rebels | Hunters* | Patrol Robot | Metal Mole | Laser Drone | Pods | Rebel Walker | Bat | Maggot | Chariot | Flying Killer | Man Eater | Huge Ivy | Mars People* | Mini-UFO* | UFO*
Enemy Vehicles Di-Cokka | Bull Chan | T-2B Melty Honey | MV-280B | MV-280C | Nop-03 Sarubia | Girida-O | 3-ton Utility Truck | R-Shobu | MH-6S Masknell | Eaca-B | Turrets
Bosses Worm Mecha | Crablops | Fall Mecha | The Union | Rebel Gigant | Kraken

Scrap Tower | Big Gate

Weapons Heavy Machine Gun | Rocket Launcher | Shotgun | Flame Shot | Enemy Chaser | Iron Lizard | Super Grenade | Drop Shot | Two Machine Guns | Zantetsu Sword | Thunder Shot | Grenade | Fire Bomb | Armor Piercer* | Mobile Satellite*
Slugs SV-001 | Slugnoid | Slug Flyer† | Ostrich Slug* | Slug Trolley | Slug Armor | Slug Gigant
Missions "Scrap Island" | "Coal Mine" | "Underground Fortress" | "The Waterfall" | "Ruins Base" | "Snowy Country" | "The Beginning is the End"
Other Combat School (Dialogue) | Weapon Stock | Rush Blaster System | Super Devil Mode* | "Scrap Fan"
† Exclusive to Metal Slug 7. * Exclusive to Metal Slug XX.
Bosses
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