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 The Vulcan has been replaced by a Gatling gun inside of its mouth.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, and also, it jumps very high constantly to dodge enemy attacks.
File:Walk Machine Type-C.gif Walk Machine Type-C An unmanned, gray version of the Special Walking Machine designed for more aggresive combat. Being heavily armored, it can fires a strong burst of bullets from the submachinegun located in its mouth, and every time that it jump very constantly to dodge enemy attacks, it unleashes from its belly a singular large mine downwards at an arc bursting into a large explosion..
File:Walk Machine Type-G.gif Walk Machine Type-G An unmanned, golden version of the Special Walking Machine designed for reconnaissance of danger zones. Being heavily armored, and unlike the previou variants, it losts its jump abbility, but it keeps the submachine gun in its mouths to fire a strong burst of bullets, and also, it submachine gun works as the grenade machine gun to fire exploding grenade bullets.


  • "Walk Machine Type-B" is a misnomer; all known Type-B Slugs are coloured blue.
Metal Slug 4
Heroes Marco RossiFio GermiTrevor SpaceyNadia Cassel
NPCs Tarma RovingEri KasamotoPOW (Names) • Rumi AikawaMadoka AikawaHyakutaro IchimonjiPresidentDonald MordenAllen O'NeilDoctorRebel ArmyAmadeus SyndicateShop LadyLumberjackBearHaunted House Employees and AttendeesMinersSailors
Enemies Rebel InfantryAmadeus InfantryFanaticsGrenade SoldierBazooka SoldierShielded SoldierBikersRebel RiflemanMortarGatling SoldierHazmat SoldierPiratesScientistsSasquatchMummiesDog MummyChariotZombiesTar ManSupervisory CameraPatrol RobotMorden RobotAmadeus Robot
Enemy Vehicles Di-CokkaM-15A BradleyT-2B Melty HoneyMV-280BNop-03 SarubiaGirida-OTurretsParachuetruck3-ton Utility TruckR-ShobuMH-6S MasknellFlying TaraEaca-BHammer-YangLandseek
Bosses Brave GuerrierToschka DalanueThe IronBig JohnSea SatanAmadeus Mother Computer
Mini-Bosses: Mecha Allen
Weapons Heavy Machine GunRocket LauncherShotgunFlame ShotEnemy ChaserIron LizardSuper GrenadeDrop ShotTwo Machine GunsGrenadeFire BombStoneThunder Cloud
Slugs SV-001SlugnoidBradleyMetal ClawWalking MachineForkliftMotorcycleLandseekRegular Army Helicopter
Missions Let's Run Through!Show SpiritSnowy RoadCadaverousGo Ahead!Secret Place
Other Metallish SystemTransformationsItemsEnvironmental ObjectsRA-TTTHoist
Regular Army Vehicles, Slugs, and Artillery
Mechanized SV-001SV-001 Type-RSlug CopterSlug FlyerSlug SubAstro SlugSlug GunnerSlugnoidLV ArmorWalking MachineSlug MarinerDrill SlugBradleyMetal ClawForkliftSlug MobileAugenstermProtogunnerSlug DiggerSlug TrolleySlug ArmorSlug GigantGolden SlugSlug AttackerSlug DefenderBall Slug/Drum SlugSlug SquareTS-001Slug Rising/Slug StrikerGiant Copter/Copter ArmsCoil TankAshley's Slug FlyerTail SlugPatrol SlugMega Drill SlugPile Impact • "Phi's 3D Printer" • Slug SniperBlue TigerAlice & Heart's TankGigantoidSV-002
Animal SV-CamelElephant SlugOstrich SlugDonkey SlugTiger SlugTurtle SlugSeahorse SlugFelsteed
A.I. MS-AliceMS-HeartPhi
Transport Middle-Son 1986Borobune SlugMotorcycleEmergency BoatRegular Army HelicopterLandseekPA33-21 BoatRA-TTT
Other Middle-Son 1999Black HoundRootmars SlugRegular Di-CokkaMr. SlugglesS.A.M. DefenderWade7000 Class LocomotiveRegular Iron Nokana
Wearable Parachute DropScuba GearJetpackDrop PackHoistMetal DeviceDollXA-01 JuggernautUlala's Mech
Stationary AA Machine GunToy Union CannonSuper Cannon