Magus II
Maha Yogi
Mahkizmo
Mainframe I

Alternate version of: Vision I
Universe/Dimension/Timeline: Earth-691 (Guardians of the Galaxy)

Mainframe II

Gender: ♂
Member of: A-Next
Universe/Dimension/Timeline: Earth M2 (Earth-982)

Cameo
Fantastic Five (II) 4 - 5

Mainframe III

Ian Wajler
Gender: ♂

Features
Dark Reign Files 1.FT

Maison Alpha
Major Liberty
Major Mapleleaf
Major Mercury
Major Victory
Maker
Makeshift

Annie Zamborano
Gender: ♀
Member of: Executive Elite

Makkari
Makluans
Makoth

Individual of: Inhumans

Malachi

Malachi
Gender: ♀

Features
Deadpool Corps: Rank and Foul 1.FT

Malcom

Gender: ♂
Universe/Dimension/Timeline: Earth Bishop's Future

Features
Bishop 1.FT

Malekith the Accursed
Malibu Universe (Earth-93060)
Malice I
Malice II
Malice III
Malice IV
Dr. Karl Malus
Mammomax
Man Called Frank
Man of War
Man with No Face
Mana
Man-Ape
Man-Apes
Man-Beast
Manbot
Man-Bull
Victor Mancha
Mandarin I
Mandarin I (Alt)

Gender: ♂
Alternate version of: Mandarin I
Universe/Dimension/Timeline: Unknown Universe/Dimension/Timeline

Features
Timeslip Collection 1.FT

Mandarin II
Mandate
Mandos
Mandrill
Mandroid
Man-Eater

Malcolm Gregory Murphy
Gender: ♂

Main
Silver Sable and the Wild Pack (I) 19

Features
Avengers Assemble (I) 1.FT

Man-Elephant

Manfred Ellsworth Haller
Gender: ♂
Alias: Behemoth II

Main
She-Hulk (II) 25
She-Hulk Premiere (HC): Jaded 1
She-Hulk TPB (I) 6

Dino Manelli

Gender: ♂
Member of: Deadly Dozen, Howling Commandos I

Mangaverse
Man-Gods
Mangog
Mangog (Earth SupPow)
Mania I

Ani Benton
Gender: ♀
Individual of: Symbiotes

Mania II

Patricia Robertson
Gender: ♀

Eden Fesi
Manikin I
Manikin II

Gender: ♂
Alternate version of: Vision I
Member of: Morgana Le Fey's Alternate Avengers

Manipulator I

Gender: ♂

Manipulator II

Gender: ♂

Man-Killer
Man-Mountain Marko
Dr. Eve Manning

Gender: ♀
Leader of: Humanity First
Universe/Dimension/Timeline: Earth M2 (Earth-982)

Manoo
Man-oo the Mighty
Manowar

Manowar
Member of: Defenders of the Deep

Manphibian
Donna Mansfield

Gender: ♀
Universe/Dimension/Timeline: Earth M2 (Earth-982)

Support
Amazing Spider-Girl 12