Metal Slug Wiki
Metal Slug Wiki

The Protogunner is a Regular Army vehicle introduced in Metal Slug 6.


The Regular Army's engineers, using the schematics of the Rebel Army's LV Armor, started to design a new Super Vehicle, the Slug Gunner. They produced this prototype unit for testing purposes.

The Protogunner does not have any kind of protection for the operator but is invincible. Unlike the final product, the Protogunner cannot transform, and it lacks the Gatling gun and pile bunker. However, it still retains its 180mm multiple cannon on its front along with a pair of 10mm Vulcan cannons on its side.

The Protogunner is much lighter and maneuverable than the Slug Gunner. Although it does not have the jet pack that allowed the Slug Gunner to double jump, the Protogunner still jumps reasonably high even without it.

By holding down the fire button, the Vulcan cannons will be fixed. This makes the Vulcans lock in place and allows the player to move the Protogunner and continuously fire without moving the Vulcans themselves.

In Other Games

Metal Slug Defense

The Protogunner is a relatively fast-producing heavy walker capable of long range fire support. It has an average amount of HP comparable to the finalized Slug Gunner with decent armor and damage. The height of its jump special allows it to very easily land hits on passing air units including R-Shobu, although it doesn't deal enough damage in one shot to destroy one. When destroyed, Ralf jumps out before it explodes and fights on foot; it is unknown on how upgraded this Ralf is.

Metal Slug Attack

The Protogunner returns with the driver changed from Ralf to Tarma due to the former's Super Rare, pre-acquisition status and originally being a powerful unit. New variants are introduced, although the drivers aren't playable when the Protogunner is destroyed.

Metal Slug Attack also introduces the Slug Defender, a heavily modified Protogunner that attacks with electricity.


  • Protogunner: The original Slug Gunner prototype.
  • Protogunner Type-B: A blue-painted, upgraded model of the Protogunner introduced in Metal Slug Attack.
  • Golden Protogunner: A golden-painted variant designed for mobility and able to evade by jumping. Once its HP is gone, Fio pushes it towards enemy lines before escaping.


  • The Protogunner has unused animations of firing at recoil while jumping. The animation gets used in Metal Slug Attack as the Golden Protogunner's special.
Regular Army Vehicles, Slugs, and Artillery
Mechanized SV-001 | SV-001 Type-R | Slug Copter | Slug Flyer | Slug Sub | Astro Slug | Slug Gunner | Slugnoid | LV Armor | Walking Machine | Slug Mariner | Drill Slug | Bradley | Metal Claw | Forklift | Slug Mobile | Augensterm | Protogunner | Slug Digger | Slug Trolley | Slug Armor | Slug Gigant | Golden Slug | Slug Attacker | Slug Defender | Ball Slug/Drum Slug | Slug Square | TS-001 | Slug Rising/Slug Striker | Giant Copter/Copter Arms | Coil Tank | Ashley's Slug Flyer | Tail Slug | Patrol Slug | Pile Impact | "Phi's 3D Printer" | Slug Sniper
Animal SV-Camel | Elephant Slug | Ostrich Slug | Donkey Slug | Tiger Slug | Turtle Slug | Seahorse Slug | Felsteed
A.I. MS-Alice | MS-Heart | Phi
Transport Middle-Son 1986 | Borobune Slug | Motorcycle | Emergency Boat | Regular Army Helicopter | Landseek | PA33-21 Boat | RA-TTT
Other Middle-Son 1999 | SV-002 | Black Hound | Rootmars Slug | Regular Di-Cokka | Mr. Sluggles | S.A.M. Defender | 7000 Class Locomotive | Regular Iron Nokana
Wearable Parachute Drop | Scuba Gear | Jetpack | Drop Pack | Hoist | Metal Device | Doll | XA-01 Juggernaut
Stationary AA Machine Gun | Toy Union Cannon | Super Cannon
Metal Slug 6
Heroes Marco Rossi | Tarma Roving | Eri Kasamoto | Fio Germi | Ralf Jones | Clark Still
NPCs Riviera von Wittenberg | Maryell von Wittenberg | POW | Rumi Aikawa | Madoka Aikawa | Hyakutaro Ichimonji | Donald Morden | Rebel Army | Chinese Soldier | Martians | Rootmars | Invaders | Announcer | Duke Koudou | Pupipi
Enemies Fanatics | Grenade Soldier | Bazooka Soldier | Shielded Soldier | Rebel Rifleman | Mortar | Gatling Soldier | Hunters | Mars People | Mini-UFO | Invader Squad | Winged Invader | Flying Parasite | Hunter Walker | Giant Hunter Walker | Space Mole Cricket | Crab-Tank | Vanguard | Smasher | Invader UFO | Flying Shelt | Flying Core | Flying Killer | Maggot
Enemy Vehicles Di-Cokka | T-2B Melty Honey | MV-280C | Nop-03 Sarubia | Girida-O | M-15A Bradley | 3-ton Utility Truck | Walking Locomotive | R-Shobu | MH-6S Masknell
Bosses Bull Drill | Iron Sentinel | Brain Robot | Elder Centipede | Invader King


Weapons Heavy Machine Gun | Rocket Launcher | Shotgun | Flame Shot | Enemy Chaser | Iron Lizard | Super Grenade | Drop Shot | Two Machine Guns | Zantetsu Sword | Grenade | Fire Bomb
Slugs SV-001 (Type-R) | Slug Flyer | Donkey Slug | Protogunner | Rootmars Slug | Slug Digger
Missions "African Winds" | "The Illusion of El Dorado" | "Asian Impact" | "Golden Bridge is Falling Down" | "Ancient Law"
Other Combat School | Weapon Stock | Rush Blaster System