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The Amadeus Mother Computer is the Amadeus Syndicate's main computer frame piloted by the Doctor. It serves as the final boss of Metal Slug 4.


The battle begins as the Doctor mounts the Type α Mother Computer. Its attacks consist of opening its hatch to launch missiles, using a pincer claw to attack the players, shooting its electric cannon, and firing a ring-shaped laser.
After destroying the Type α, the Doctor will switch to the Type β Mother Computer. It attacks by opening its front and firing multiple rounds from its mini-guns, sending out a buzz saw, and launching satellite drones which attack by firing energy projectiles.
Amadeus 3rd phase idle.gif
Once the player successfully destroys the two Mother Computers, he will finally take control of the central machine. This computer's attacks consist of firing horizontal lasers from the left and right, releasing many lasers that ricochet around the screen, and calling two Amadeus Robots that appear from the crevice created by Type β Mother Computer's buzz saw to fire further blasts, shooting laser beams first towards the floor, then at a forty-five degree angle towards the players.

In Other Games

Metal Slug Defense

After Metal Slug 4, it reappears in Metal Slug Defense (ver. 1.38.0) during the "Amadeus Attack" event. The Type α and Type β can be purchased in the game's store via coins collected in the Event Area.

Metal Slug Attack

The Amadeus Mother Computer is featured as a Daily Boss on Friday-Saturday. Only the Type α and Type β computers are in this mode. Later, in the Extra Ops "CODE: ASSAULT", both computers reappears as the main boss, again with the previously mentioned computers only.

Unlike Metal Slug Defense, both computers ("α" and "β") are considered one unit (just as the Emain Macha on said game). Once the Type α is destroyed, the Type β will appear from the base, but only if the player has unlocked Skill 2. This could explain the units' expensive AP cost (which is increased to 2000 in Silver, 1800 in Gold and 1600 in Platinum).

Amadeus Type-γ MSA idle.gif

An improved version of the Type β machine, named the Type γ (seen right), appears in the "Amadeus Revenge" Extra Ops as an individual unit. It is colored red and gold, and the "18" on the front doors is now a "19".

The central machine makes its playable debut in the "Kung Fu Guru" Extra Ops. A projected version of the Doctor (named the Type: AI) pilots the now hovering machine as part of an experiment regarding sentient A.I. The central machine's long range is dragging two lasers, one positioned horizontally and another vertically. Its special is a shock wave, extended to three waves when Skill 4 is unlocked.

A golden version of said central machine also appears, possessing enhanced stats. It can now also generate a force field around it to provide protection against damage and resistance to stuns.



  • The Amadeus Mother Computer is the only boss in Metal Slug 4 that isn't made of recycled sprites from previous games.
  • The laser turrets in the third phase of the boss fight is a recycled sprite of the Supervisory Camera.
  • The Amadeus Mother Computer and Invader King are only final bosses in the main series which have their own final boss theme other than Final Attack.
  • If the player is very close to the Type: α, the energy projectiles will not hit them; instead, the energy projectiles will stay in mid-air until it fades.
  • White Baby and First Baby use the central machine's middle part (with the rotating screws) as their floating vehicle.
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
Metal Slug TetsuyukiHairbuster RibertsTani OhShoe & KarnIron NokanaHi-Do
Mini-Bosses: Mini-BataAllen O'Neil
Metal Slug 2/X The Keesi II / Iron Nokana MK II (X) • Aeshi NeroDragon NosukeBig ShieeHozmiRugname
Mini-Bosses: Mosque ArtilleryThe Keesi II (X) • Karn (X) • Allen O'NeilDai-Manji
Metal Slug 3 Huge HermitMonoeye UFOJupiter KingSol Dae RokkerRootmars
Mini-Bosses: Twin Ohumein-CongaMonoeyesHairbuster RibertsHi-DoRugnameFake RootmarsClone Incubator
Metal Slug 4 Brave GuerrierToschka DalanueThe IronBig JohnSea SatanAmadeus Mother Computer
Mini-Bosses: Mecha Allen O'Neil
Metal Slug 5 Metal RearShooting RayScreamerSand MarineAvatar of Evil
Mini-Bosses: Black HoundStone Turtle (unused) • Gaia ElephantPtolemaios (unused)
Metal Slug 6 Bull DrillIron SentinelBrain RobotElder CentipedeInvader King
Mini-Bosses: Invader ControllerKing's Cocoon
Metal Slug 7/XX Iron Death WormCrablopsDestroyed CrablopsFall ClimberThe UnionRebel GigantKraken
Mini-Bosses: Scrap TowerBig Gate
Metal Slug: 1st Mission Rebel VTOLRebel TrainMacbaRebel ZeppelinElectromagnetic CraneWeapons Port BossMetal Strider
Mini-Bosses: Facility ElevatorMacbaRebel Truck
Metal Slug: 2nd Mission Big BerthaTerrain CarrierRebel ReactorMacbaRebel SubmarineTani OhWiredRebel AirplaneMetal StriderRocket UFO
Mini-Bosses: Power GeneratorsRebel RocketHyakutaro
Metal Slug Advance FormorEmain MachaKaladgolgThe Keesi IIICabracan
Mini-Bosses: Allen Jr.
Metal Slug 3D ParachuetruckMosque ArtillerySpider-BotUnderground Cruise MissileMorden's BattleshipMorden's CastleAllen O'NeilLugusLieu
Metal Slug Attack Pharaoh's ArcPtolemaiosBall SlugGreat MotherMars GigantalosK-O3 Coupled Armored VehicleLand BlowfishCyclobsterSlug SquareZoni DolomaQuadro JumperDenturionD-GuFortmeranianRock MoleGiant CopterEt A OmnisVortexDigger BaseCrusty LegsArmored CrawlerQueen Big Snail7000 Class LocomotiveRiviere HyllMetal Fusioner No.223Drum SlugMars WolfSea DragonTetsujin SquadLa TorneGigantnoidDark GateKnight TankImpact CannonDive Assault Cannon Andrew
Mobile games Rocket Control RoomUnknown AlienHellfireSpiderbotCyclopsMega Laser TurretMars Battle UFOM-32 Water Carrier PlaneKouraiAlien Floating Structure