1st profile
Featured Characters:
- Magus (Technarch)
- Makkari
- Karl Malus
- Man-Ape
- Mandarin
- Mandrill
- Mandroid
- Manhattan
- Manslaughter
- Man-Thing
- Man-Thing's Swamp
- Mantis
- Marrina
- Marvel Girl (Jean Grey)
- Massachusetts Academy
- Mass Master
- Master of the World
- Mastermind (Jason Wyngarde)
- Master Pandemonium
- Masters of Evil
- Baron Zemo (Heinrich)
- Melter
- Radioactive Man
- Black Knight (Garrett)
- Executioner
- Enchantress
- Crimson Cowl
- Klaw
- Whirlwind
- Black Knight (Whitman)
- Egghead
- Scorpion
- Moonstone
- Shocker
- Beetle
- Tiger Shark
- Absorbing Man
- Titania
- Screaming Mimi
- Grey Gargoyle
- Yellowjacket
- Baron Zemo (Helmut)
- Wrecker
- Thunderball
- Piledriver
- Bulldozer
- Goliath
- Blackout
- Mr. Hyde
- Fixer
- Maximus
- Mayhem
- Medusa
- Melter
- Mentallo
- Mentor (A'Lars)
- Mephisto
- Merlin (Merlyn)
- Morgause (Mentioned)
- Merlin (Maha Yogi)
- Merlyn
- Mesmero
- Mirage (Danielle Moonstar)
- Mister Fantastic
- Mister Fear (Alan Fagan)
- Mister Hyde
- Mockingbird
- Modred the Mystic
- Mojo
- Mole Man
Appendix: Other Dimensions
- Feng-Tu
- Fifth Dimension
- Flatworld
- Fourth Dimension
- Fragmented America
- The Gorge
- Hades
- The Halls of Fear
- Hel
- Heliopolis
- Hell
- Here and There
- Hulk-Worlds
- Acid-Rain World
- Barren World
- Burning World
- Daniel Decyst's World
- Demonworld of the N'Garai
- Desert World