Regular Army

Regular Army
Leader	Unknown
Commanders	Marco Rossi Tarma Roving Sophia Greenville Claudia
Founded	Unknown
Headquarters	Worldwide
Area of Operations	Worldwide
Enemies With	Rebel Army Arabian Infantry Martians (MS2/X & MS3) Japanese Army Amadeus Syndicate Ptolemaic Army (MS5) Invaders (MS6)
Affiliated With	P.F. Squad S.P.A.R.R.O.W.S Ikari Warriors World Government

The Regular Army (正規軍, Seikigun) is the protagonist force of the Metal Slug series.

Information

The Regular Army is the main armed force of the World Government and is composed of various coalition forces from around the globe. They mostly try to avoid direct conflict, mainly resorting to gathering intelligence, deploying special forces behind enemy lines, even hiring mercenaries if deemed necessary. They are at war with the Rebel Army for the most part and are trying to maintain world peace while fending off numerous supernatural and alien calamities.

The Regular Army is also known for its large and advanced Super Vehicles (mechanical, animal, or stolen) and their advanced experimental weapons.

The Super Devil seems to have taken an interest in the Regular Army. It offers them aid but only at extremely dire times.

Uniforms

The Regular Army only has two main uniform colors: light-blue which is the standard one and grey for urban combat. Special operatives also wear tactical gear and/or various camouflages depending on their missions.

Troops

	Regular Uniform: Common light-blue peacekeeping uniform of the Regular Army.
	Urban Grey Uniform: Alternate urban uniform of the Regular Army. Mostly seen in tutorials in Metal Slug Defense and Metal Slug Attack. They're possibly also the same soldiers in Metal Slug Infinity.
	Cadet Uniform: Helmetless, short-sleeved uniforms worn by recruits. Seen in Metal Slug Advance.
	Male Uniform Set: Special style of uniform worn by male special forces soldiers. An undershirt topped with a vest with pants tucked under boots. They have a backpack with a hidden Punching Glove inside.
	Female Uniform Set: Special style of uniform typically worn by female special forces soldiers. An undershirt or cropped tank top topped with a vest. Bottom wear consists of belted shorts with hip vents (exposing their black underwear), knee pads, and boots. They have a waist pack worn from the back.
	Special Uniform: Blue-colored uniform worn by Special Units such as members of the Peregrine Falcons or S.P.A.R.R.O.W.S. Seen in Metal Slug Attack.
	Doll: High-tech bodysuit for Special Ops. This was later updated to be in line with the Metal Device. Seen in Metal Slug Attack.
	Metal Device: A metal bodysuit with synthetic tissues equal to an archdemon connected to the user's nervous system. Increases the user's strength but quickly drains their energy and leaves them hungry. Compatible with very specific people. Seen in Metal Slug Attack.

Units of the Regular Army

Leader

• Unknown (presumably the President of the World Security Council)

Commanders

• Unnamed Generals
• Claudia

Peregrine Falcons Squad

• Sophia Greenville (Major, Commander, Instructor)
• Marco Rossi (Major)
• Tarma Roving (Lieutenant)
• Trevor Spacey (Sergeant)
• Hero/Heroine
• Gimlet
• Walter Ryan
• Tyra Elson
• Roberto Nicola
• Rita Lewinsky
• Rocky
• Jephet

S.P.A.R.R.O.W.S

• Eri Kasamoto (Sergeant 2nd Class)
• Fio Germi (Sergeant Major)
• Red Eye
• Nadia Cassel (Private and Secret Services agent)
• Nathalie Neo
• Midori Schumann (Junior Engineer and mechanic)
• Gisee
• Avvio (M.D.P.; Field Agent)

Ikari Warriors Team (Mercenary)

• Heidern
• Ralf Jones (Colonel)
• Clark Still (Major)
• Leona Heidern
• Whip
• Anna Wiese (Support)

Support

• Rumi Aikawa (Sergeant and supplier)
• Hyakutaro Ichimonji (2nd Lieutenant)
• Utan
• Madoka Aikawa (Private and supplier)
• Navel
• Matilda (Scientist)
• Selina (Merchant and supplier)
• Unnamed Scientists

Artificial Intelligence

• MS-Alice
• MS-Heart
• Phi

Metal Device Project

• Perche
• Ami
• Ulala
• Molly (Researcher)
• Maggie (Mechanic)
• Quaith (Pilot)
• Menzel (Field Agent)
• Karen (Pilot)

Other Known Members

• Chris Key (Captain)
• Alexander Suvorov (Lieutenant)
• Tequila (Covert Agent)
• Alisa Stewart (Engineer)
• Helton
• Tilde
• Nikita (Soldier)
• Amir
• Mello (Future soldier)
• Amber (Lone-wolf pilot)
• Nikita (Officer)
• Reika Bradford (Volunteer corps officer)
• Louise (Elite Sniper)
• Ashley (Pilot)
• Growl
• Victoria
• Kanae (Military Police officer)
• Howell (Medic)
• Elizabeth Mariani
• Undo
• Merris

Drill Instructors

• Margaret Southwood
• Riviera von Wittenberg
• Maryell von Wittenberg
• Cynthia Hartnett
• Anne

Infantry

• Regular Infantry

Former

• Bersek (Formerly; abducted by the Invaders; Regular Army soldier)

Unseen

• Phil Gene (Engineer)
• Michiko Nakajima (Engineer)
• "Achilles" (Support)
• "Tabomba" (Support)

Vehicles

See Slugs for in-depth overview.

Combat 

• "3D Printer Tank"
• Ball Slug (New Battle Tank)
  • Drum Slug
• Black Hound (Repurposed Ptolemaic Slug)
• Blue Tiger
• Coil Tank
• Di-Cokka (Regular Variant)
• LV Armor (Stolen Rebel vehicle)
• Metal Claw
• Pile Impact
• Slug Armor (Stolen Rebel vehicle)
• Slug Attacker
• Slug Defender
• Slug Gunner
• Slug Rising
  • Slug Striker
• Slug Sniper
• Slug Square
• Slugnoid
• SV-001 Metal Slug (Main Battle Tank)
• SV-002 (Successor Tank)
• TS-001 Tandem Slug (Two connected Slugs)
  • Slug Puncher
  • "Type-Gunner"
  • Knight Tank

Animal

• SV-Camel
• Elephant Slug
• Ostrich Slug
• Donkey Slug
• Tiger Slug
• Turtle Slug
• Felsteed (Supernatural mount)

Support

• Drill Slug
• Emergency Boat
• Forklift
• Hoist
• Jetpack
• Landseek (Regular Variant)
• Motorcycle
• Parachute Drop
• Patrol Slug
• Protogunner (Slug Gunner prototype)
• RA-TTT (Utility Truck)
• Slug Digger
• Slug Mobile (Service Vehicle)
• Slug Trolley
• Walking Machine

Aerial

• Ashley's Slug Flyer (Special Fighter Jet)
• Astro Slug
  • Astro Ship
• Drop Pack
• Regular Army Helicopter
• Slug Copter
• Slug Flyer
• Ulala's Mech

Marine

• Middle-Son 1986 (Reserve)
• Middle-Son 1999 (Ballistic Submarine)
• Slug Mariner
• Slug Sub (Attack Submarine)
• Borobune Slug (Covert Operations Fishing Boat)
• PA33-21 Boat
• Scuba Gear

Artillery

• AA Machine Gun
• Bradley (Regular Variant)
• Doll (Artillery Suit)
• Metal Device (Experimental Suits)
• Super Cannon
• Toy Union Cannon
• Wade
• XA-01 Juggernaut

Large Scale

• 7000 Class Locomotive
• Augensterm
• Coil Tank
• Digger Base
• Giant Copter
  • Copter Arms
  • Shield Copter
• Gigantoid
• Golden Slug Phoenix
• Mega Drill Slug
• Slug Gigant
  • Giant Barrel
• Pile Impact
• Tail Slug

Decommissioned

• S.A.M. Defender
• Mr. Sluggles

Hired Arms

• P.F. Squad
• S.P.A.R.R.O.W.S
• Ikari Warriors Team

Gallery

Regular Army Cadet.

The SV-001, the main Super Vehicle of the Regular Army.

An armoured car-like Truck for the Regular Army. Tarma can be seen riding in the back in Metal Slug 4.

Regular Army truck. Very similar to the one from Metal Slug 4, but camouflaged. Only appears in Mission 3 of Metal Slug 5.

A Regular Army version of the Hi-Do. A green one appears in the final mission of Metal Slug 6 and the credits of Metal Slug 7/XX.