Mephitisoids
Mercurio
Mercury I
Mercury II

Gender: ♂
Member of: X-Men II

Mercury III
Mercy
Grace Mercy

Gender: ♀
Sibling(s): Mary Mercy

Features
Deadpool Corps: Rank and Foul 1.FT

Mary Mercy

Gender: ♀
Sibling(s): Grace Mercy

Features
Deadpool Corps: Rank and Foul 1.FT

Merlin I
Merlin II
Merlin III
Irene Merryweather
Merzah the Mystic
Mesmero
Mess

Nichole Martin
Gender: ♀
Member of: Gamma Corps

Messiah
Metal Master
Metalhead

Edward van Beethoven-Osako
Gender: ♂
Member of: X-Men 2099

Metalscream 2099

Universe/Dimension/Timeline: Earth 2099 A.D. (Earth-928)

Main
2099 Unlimited 4, 7

Meteorite I
Meteorite II

Dr. Karla Sofen
Gender: ♀
Alias of: Dr. Karla Sofen
Alternate version(s): Meteorite II (Earth MiniM)
Member of: Thunderbolts

Meteorite II (Earth MiniM)
Mettle
M-Faces
M'Gumbu
MI13
Michael Otten Firefighters of Ladder Company 35
Lynn Michaels
Microbe
Micro-Chip
Microchip
Microman
Micromax
Micronauts
Microtron
Microverse
Midas
Midgard Serpent
Midget
Midnight
Midnight Sons
Midnight Sun
Midnight's Fire
Midsummer Knights 2099
Miek the Unhived
Mighty Avengers
Mighty Sore

Gender: ♂
Spoof of: Thor Odinson
Universe/Dimension/Timeline: Whattheverse

Main
What the -- ?! 5 - 6

Mik

Individual of: Moloids
Student(s) at/of: Future Foundation

Mike

Gender: ♂

Main
The Kellys 24

Mikhlo the Gorilla

Gender: ♂
Member of: Super-Apes

Francisco Milan

Gender: ♂
Member of: Acolytes

Jenette Miller

Gender: ♀
Member of: Killraven's Freemen
Universe/Dimension/Timeline: Earth War of the Worlds

Layla Rose Miller
Millie the Model
Millie the Model (Alt)

Millicent Collins
Gender: ♀
Alternate version of: Millie the Model
Universe/Dimension/Timeline: Unknown Universe/Dimension/Timeline

Main
King-Size Spider-Man Summer Special 1
Spider-Man Digest TPB: Spider-Women 1

Mimic
Mimic (Earth-12)

Calvin Rankin
Gender: ♂
Alternate version of: Mimic
Member of: Exiles III
Universe/Dimension/Timeline: Earth-12

Features
The Official Handbook of the Marvel Universe: X-Men Age of Apocalypse 2005 1.FT

Mimir

Gender: ♂
Individual of: Asgardian Entities
Parent(s): Buri

Features
Thor: Asgard's Avenger 1.FT

Mind Gem

(Blue)
Member of: Infinity Gems
Owned by: Moondragon

Mindless Ones
Mindwave

Gender: ♂

Lead
Thunderbolts (II) 116

Mind-Wave
Mindworm