Bosses

• 
  Aeshi Nero
• 
  Alien Floating Structure
• 
  Allen Jr.
• 
  Allen O'Neil
• 
  Amadeus
• 
  Amadeus Mother Computer

• 
  Ball Slug
• 
  Big Bertha
• 
  Big Gate
• 
  Big John
• 
  Big Shiee
• 
  Black Hound
• 
  Bosses
• 
  Brain Robot
• 
  Brave Guerrier
• 
  Bull Drill

• 
  Cabracan
• 
  Clones
• 
  Controller
• 
  Crablops
• 
  Cyclobster
• 
  Cyclops

• 
  Dai-Manji
• 
  Donald Morden
• 
  Dragon Nosuke

• 
  Electromagnetic Crane
• 
  Emain Macha
• 
  Evil Spirit Incarnate

• 
  Fall Mecha
• 
  Fierce Battle (Mission)
• 
  Formor
• 
  Fortmeranian

• 
  Great Mother

• 
  Hairbuster Riberts
• 
  Hellfire
• 
  Hi-Do
• 
  Hilde Garn's Slug
• 
  Hozmi
• 
  Huge Hermit

• 
  Invader Queen
• 
  Iron Nokana
• 
  Iron Sentinel

• 
  Jupiter King

• 
  K-O3 Coupled Armored Vehicle
• 
  Kaladgolg
• 
  Kourai
• 
  Kraken

• 
  Land Blowfish
• 
  Lieu
• Lugus

• 
  M-32 Water Carrier Plane
• 
  Mammoth Tower
• 
  Mars Battle UFO
• 
  Mega Laser Turret
• 
  Metal Rear
• Category:Metal Slug 3D Bosses
• 
  Mini-Bata
• 
  Monoeye
• 
  Morden's Battleship
• 
  Mosque Artillery

• 
  Pharaoh
• 
  Ptolemaic Infantry

• 
  Quadro Jumper

• 
  Rebel Gigant
• 
  Rebel Train
• 
  Rebel Vehicles
• 
  Rebel VTOL
• 
  Rebel Zeppelin
• 
  Rocket Control Room
• 
  Rocket UFO
• 
  Rootmars
• 
  Rugname

• 
  Sand Marine
• 
  Scrap Tower
• 
  Sea Satan
• 
  Sea Worm
• 
  Shoe & Karn
• 
  Shooting Ray
• 
  Slug Square
• 
  Slugs
• 
  Sol Dae Rokker
• 
  Spiderbot
• 
  Stone Turtle

• 
  Tani Oh
• 
  Terrain Carrier
• 
  Tetsuyuki
• 
  The Iron
• 
  The Keesi
• 
  The Keesi III
• 
  The Ten Commandments of Moses
• 
  The Union
• 
  Toschka Dalanue

• 
  Underground Cruise Missile
• 
  Unknown Alien

• 
  Wall Crawler
• 
  Weapons Port Boss
• 
  Wired
• 
  Worm Mecha

• 
  Zoni Doloma