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The Hi-Do is a transport gunship used by many factions.


The Hi-Do is a tandem rotor helicopter used by Donald Morden, which is also used in carrying VIPs. Designed for testing purposes, it has heavy armor and is equipped with several weapons, making it a versatile combat vessel. It is a modified version of the Orewana KO-42H "The Keesi I" transport helicopter that was owned by the Ruschen Federation. [1].

It is the last boss from Metal Slug: Super Vehicle-001 and later appears in Metal Slug 3 as a mid-boss of the last mission used by a Mars Person masquerading as Morden. In Metal Slug 4, there is a blue variant that is used by the Regular Army to transport their commando units, likely a repurposed version of the original captured after the Rebel's defeat. There is also a longer green version that appears in Metal Slug 6, and another green version that appears during Metal Slug 7 credits, ridden by Rumi Aikawa. The Regular Army's variant of the Hi-Do is called the Regular Army Helicopter.

The overall armaments of the various Hi-Do models vary, both on-board and those carried by their passengers, but a nose-mounted missile launcher with three tubes is found in nearly all models.


As the Hi-Do is the personal transportation of General Morden, he himself appears on the cabinet, firing rockets from his bazooka constantly, in the same way he does from the Hairbuster Riberts. Morden is constantly aiming at the player and can fire in any direction except under or above. If the player stays under him too long, the minigun underneath will fire from right to left. Its main attack is to launch heat-seeking missiles from the front, and after some time, the Hi-Do will begin to carpet bomb the entire screen. The same attacks are used in a Metal Slug 3 mini-boss fight by a Mars Person disguised as Morden. The speed of its movement and attacks will begin to increase as its heath lowers.


Hi-Do.gif Hi-Do:The original, as ridden by Donald Morden himself.
Vechiclesuper 99.gif Regular Army Helicopter: Variant used by the Regular Army in Metal Slug 4.
Green-hi-do.gif Hi-Do (Transport): Variant ridden by Rumi Aikawa in Metal Slug 7. It also found in the first scene of Mission 5 in Metal Slug 6, deploying both the player and Rebel Army soldiers against Invaders.
Hi-Do(Amadeus) MSA idle.gif
Hi-Do(Amadeus): Variant created by the Amadeus Syndicate in Metal Slug Attack, it looks just like the original model only painted purple and ridden by a Morden Robot.
Hi-Do MK II: Upgraded variant of the Rebel version now painted in red. It can also airdrop missiles that are capable of nullifying projectiles.
Hi-Do MK III: Upgraded variant of the Rebel version painted black and olive green, making it look similar to the original. The missiles it airdrops weakens the enemy's strength and can also seal off their attacks.
Abigail's Hi-Do: A custom-made Hi-Do used by Abigail. It is painted pink and brown for anticipation of Valentine's Day; as expected because of its prominent passenger, the hatch contains a custom-made laser sphere and launches highly advanced missiles with a chocolate sculpture of its passenger wrapped above it.




  1. Metal Slug Official Guidebook (1997), pg. 51. [1]
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
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Mobile games Rocket Control RoomUnknown AlienHellfireSpiderbotCyclopsMega Laser TurretMars Battle UFOM-32 Water Carrier PlaneKouraiAlien Floating Structure