M¶
- M-Warrior #1
- M-Warrior #2
- Machina Armored Unit
- Machina Defender
- Machina Force
- Machina Fortress
- Machina Gearframe
- Machina Peacekeeper
- Machina Sniper
- Machina Soldier
- Machine Assembly Line
- Machine Conversion Factory
- Machine Duplication
- Machine King
- Machine King - 3000 B.C.
- Machine King Prototype
- Machine Lord Ur
- Macro Cosmos
- Mad Archfiend
- Mad Dog of Darkness
- Mad Lobster
- Mad Reloader
- Mad Sword Beast
- Mage Power
- Magic Cylinder
- Magic Drain
- Magic Formula
- Magic Hole Golem
- Magic Jammer
- Magic Planter
- Magic Reflector
- Magical Android
- Magical Arm Shield
- Magical Blast
- Magical Citadel of Endymion
- Magical Dimension
- Magical Exemplar
- Magical Explosion
- Magical Ghost
- Magical Hats
- Magical Labyrinth
- Magical Mallet
- Magical Marionette
- Magical Merchant
- Magical Plant Mandragola
- Magical Reflect Slime
- Magical Scientist
- Magical Stone Excavation
- Magical Thorn
- Magicat
- Magician of Black Chaos
- Magician’s Circle
- Magicians Unite
- Magician’s Valkyria
- Magna Drago
- Magna-Slash Dragon
- Magnet Circle LV2
- Magnetic Mosquito
- Maha Vailo
- Maharaghi
- Maiden of Macabre
- Maiden of the Aqua
- Maiden of the Moonlight
- Majestic Dragon
- Majestic Mech - Goryu
- Majestic Mech - Ohka
- Majestic Mech - Senku
- Majestic Red Dragon
- Majestic Star Dragon
- Maji-Gire Panda
- Major Riot
- Maju Garzett
- Makiu, the Magical Mist
- Makyura the Destructor
- Malefic Blue-Eyes White Dragon
- Malevolent Catastrophe
- Malevolent Mech - Goku En
- Malevolent Nuzzler
- Malfunction
- Malice Ascendant
- Malice Dispersion
- Malice Doll of Demise
- Mammoth Graveyard
- Man Beast of Ares
- Man Eater
- Man-Eater Bug
- Man-Eating Treasure Chest
- Man-Thro’ Tro’
- Manga Ryu-Ran
- Maniacal Servant
- Manju of the Ten Thousand Hands
- Manticore of Darkness
- Marauding Captain
- Marionette Mite
- Mark of the Rose
- Marshmallon
- Marshmallon Glasses
- Maryokutai
- Masaki the Legendary Swordsman
- Mask of Brutality
- Mask of Darkness
- Mask of Dispel
- Mask of Restrict
- Mask of the Accursed
- Mask of Weakness
- Masked Beast Des Gardius
- Masked Chopper
- Masked Dragon
- Masked Sorcerer
- Mass Driver
- Mass Hypnosis
- Master & Expert
- Master Gig
- Master Kyonshee
- Master Monk
- Master of Oz
- Mataza the Zapper
- Mausoleum of the Emperor
- Max Warrior
- Maximum Six
- Mazera DeVille
- Mecha Bunny
- Mecha-Dog Marron
- Mechanical Hound
- Mechanical Snail
- Mechanicalchaser
- Meda Bat
- Medium Piece Golem
- Medusa Worm
- Mefist the Infernal General
- Mega Thunderball
- Mega Ton Magical Cannon
- Megamorph
- Megarock Dragon
- Megasonic Eye
- Mei-Kou, Master of Barriers
- Melchid the Four-Face Beast
- Meltiel, Sage of the Sky
- Memory Crusher
- Mermaid Archer
- Mermaid Knight
- Mesmeric Control
- Messenger of Peace
- Metabo Globster
- Metabo-Shark
- Metal Armored Bug
- Metal Detector
- Metal Dragon
- Metal Fish
- Metal Guardian
- Metal Reflect Slime
- Metal Shooter
- Metallizing Parasite - Lunatite
- Metalmorph
- Metalsilver Armor
- Metalzoa
- Metamorphosis
- Meteo the Matchless
- Meteor Dragon
- Meteor Flare
- Meteor of Destruction
- Meteorain
- Mezuki
- Michizure
- Micro Ray
- Mid Shield Gardna
- Mighty Guard
- Mikazukinoyaiba
- Millennium Golem
- Millennium Scorpion
- Millennium Shield
- Milus Radiant
- Minar
- Mind Control
- Mind Crush
- Mind Haxorz
- Mind Master
- Mind on Air
- Mind Over Matter
- Mind Protector
- Mind Trust
- Mind Wipe
- Mine Golem
- Minefield Eruption
- Minefieldriller
- Miniaturize
- Minoan Centaur
- Minor Goblin Official
- Miracle Dig
- Miracle Fertilizer
- Miracle Flipper
- Miracle Fusion
- Miracle Jurassic Egg
- Miracle Kids
- Miracle Locus
- Miracle Restoring
- Miraculous Descent
- Miraculous Rebirth
- Mirage Dragon
- Mirage Knight
- Mirage Of Nightmare
- Mirage Tube
- Mirror Force
- Mirror Gate
- Mirror of Oaths
- Mirror of Yata
- Mirror Wall
- Misairuzame
- Misfortune
- Mispolymerization
- Mist Archfiend
- Mist Body
- Mist Valley Shaman
- Mist Valley Soldier
- Mist Valley Thunderbird
- Mist Wurm
- Moai Interceptor Cannons
- Mobius the Frost Monarch
- Moisture Creature
- Moja
- Mokey Mokey
- Mokey Mokey King
- Mokey Mokey Smackdown
- Molten Behemoth
- Molten Destruction
- Molten Zombie
- Molting Escape
- Monk Fighter
- Monster Egg
- Monster Gate
- Monster Recovery
- Monster Reincarnation
- Montage Dragon
- Moon Dragon Quilla
- Moon Envoy
- Morale Boost
- Moray of Greed
- Morinphen
- Mormolith
- Morphing Jar
- Morphing Jar #2
- Morphtransition
- Morphtronic Accelerator
- Morphtronic Bind
- Morphtronic Boarden
- Morphtronic Boomboxen
- Morphtronic Cameran
- Morphtronic Celfon
- Morphtronic Clocken
- Morphtronic Cord
- Morphtronic Datatron
- Morphtronic Engine
- Morphtronic Forcefield
- Morphtronic Magnen
- Morphtronic Magnen Bar
- Morphtronic Map
- Morphtronic Mix-up
- Morphtronic Monitron
- Morphtronic Radion
- Morphtronic Remoten
- Morphtronic Repair Unit
- Morphtronic Rusty Engine
- Morphtronic Scopen
- Morphtronic Slingen
- Morphtronic Videon
- Mosaic Manticore
- Mother Grizzly
- Mother Spider
- Mountain
- Mr. Volcano
- Mucus Yolk
- Mudora
- Muka Muka
- Muko
- Multiple Piece Golem
- Multiplication of Ants
- Multiply
- Mushroom Man
- Mushroom Man #2
- Musician King
- Mustering of the Dark Scorpions
- Mutant Mindmaster
- My Body as a Shield
- Mysterious Guard
- Mysterious Puppeteer
- Mysterious Triangle
- Mystic Box
- Mystic Clown
- Mystic Horseman
- Mystic Lamp
- Mystic Plasma Zone
- Mystic Probe
- Mystic Swordsman LV2
- Mystic Swordsman LV4
- Mystic Swordsman LV6
- Mystic Tomato
- Mystical Cards of Light
- Mystical Elf
- Mystical Knight of Jackal
- Mystical Moon
- Mystical Sheep #1
- Mystical Sheep #2
- Mystical Shine Ball
- Mystical Space Typhoon
- Mystical Wind Typhoon
- Mystik Wok
- Mythical Beast Cerberus