Metal Slug Wiki
Metal Slug Wiki

The Walking Machine (aka Walk Machine) is a vehicle first discovered in Metal Slug 4's fourth stage, Cadaverous.


The Walking Machine is a crawling Slug made for exploration purposes. What makes it unusual is its design, a robotic Mutated Soldier with a rotating light on the top of its head and an exposed battery on its back. The player rides astride the Walking Machine and holds onto the rains connected to its cheeks.

Gameplay-wise, the Walking Machine is a variant of the animal Slugs - meaning that the pilot rides unprotected, able to use the Vulcan but otherwise limited to tossing grenades. It possesses a lower profile, offering some degree of evasion (poison bombs roll harmlessly underneath it, for example). It can also jump higher than most Slugs.

In Other Games

Metal Slug Defense

The Walking Machine returns as Nadia's special attack, in which she calls it from the players base (riding it once it catches her up). While on board, Nadia is able to use its Vulcan as a long range attack and tosses Fire Bombs for her special attack.

Metal Slug Attack

The Walking Machine is once again Nadia's personal Slug. For her "everlasting summer" variant, she may immediately deploy piloting the Walking Machine. An improved futuristic design of the Walking Machine was also introduced for her "special" release.


Walk machine.gif Walking Machine The original crawling Slug.
Special Nadia MSA walker.gif Special Walking Machine A sleeker variant with a different head and horns for handles. The Vulcan has been replaced by a Gatling gun inside of its mouth. Nadia pilots this Slug and tosses air mines instead of Fire Bombs.
Walk Machine Type-B.gif Walk Machine Type-B An unmanned, red version of the Special Walking Machine designed for underground exploration. Although heavily armored, it does not have a lot of weaponry, relying on a Mobile Satellite to get out of dangerous situations.


  • "Walk Machine Type-B" is a misnomer; all known Type-B Slugs are coloured blue.
Metal Slug 4
Heroes Marco Rossi | Fio Germi | Trevor Spacey | Nadia Cassel
NPCs Tarma Roving | Eri Kasamoto | POW (Names) | Rumi Aikawa | Madoka Aikawa | Hyakutaro Ichimonji | President | Donald Morden | Allen O'Neil | Doctor | Rebel Army | Amadeus Syndicate | Shop Lady | Lumberjack | Bear | Haunted House Employees | Haunted House Attendees | Miners | Sailors
Enemies Rebel Infantry | Amadeus Infantry | Fanatics | Grenade Soldier | Bazooka Soldier | Shielded Soldier | Bikers | Rebel Rifleman | Mortar | Gatling Soldier | Hazmat Soldier | Pirates | Scientists | Sasquatch | Mummies | Dog Mummy | Chariot | Zombies | Tar Man | Supervisory Camera | Patrol Robot | Morden Robot | Amadeus Robot
Enemy Vehicles Di-Cokka | M-15A Bradley | T-2B Melty Honey | MV-280B | Nop-03 Sarubia | Girida-O | Turrets | Parachuetruck | 3-ton Utility Truck | R-Shobu | MH-6S Masknell | Flying Tara | Eaca-B | Hammer-Yang | Landseek
Bosses Brave Guerrier | Toschka Dalanue | The Iron | Big John | Sea Satan | Amadeus Mother Computer

Mecha Allen

Weapons Heavy Machine Gun | Rocket Launcher | Shotgun | Flame Shot | Enemy Chaser | Iron Lizard | Super Grenade | Drop Shot | Two Machine Guns | Grenade | Fire Bomb | Stone | Thunder Cloud
Slugs SV-001 | Slugnoid | Bradley | Metal Claw | Walking Machine | Forklift | Motorcycle | Landseek | Regular Army Helicopter
Missions "Let's Run Through!" | "Show Spirit" | "Snowy Road" | "Cadaverous" | "Go Ahead!" | "Secret Place"
Other Metallish System | Transformations | Items | Environmental Objects | RA-TTT | Hoist
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