The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Lin (1 member)
- Ling Xiaoyu (9 members)
- Link (1 member)
- Liu Kang (2 members)
- Lucky Glauber (1 member)
- Luigi (1 member)
- Luke (8 members)
- M.Bison (37 members)
- M.Bison (Dictator) (1 member)
- M. Bison (463 members)
- M. Bison (Dictator) (40 members)
- MBAACC (4 members)
- MODOK (43 members)
- MVC2 (4 members)
- MVCI (2 members)
- Madam Bo (4 members)
- Magneto (33 members)
- Mai (45 members)
- Mai Shiranui (119 members)
- Maki (47 members)
- Makoto (53 members)
- Mammoth (4 members)
- Manon (7 members)
- Marie Rose (3 members)
- Mario (1 member)
- Marisa (7 members)
- Mars People (1 member)
- Marshall Law (5 members)
- Marth (1 member)
- Martial Masters (35 members)
- Marukka (30 members)
- Marvel Super Heroes (67 members)
- Marvel Super Heroes vs Street Fighter (108 members)
- Marvel VS Capcom: Infinite (6 members)
- Marvel Vs. Capcom 2 (847 members)
- Marvel Vs Capcom 2 (2 members)
- Marvel characters (3 members)
- Marvel vs. Capcom 2 (51 members)
- Marvel vs. Capcom Infinite (46 members)
- Marvel vs. Capcom Infinite & Beyond (6 members)
- Marvel vs Capcom (58 members)
- Marvel vs Capcom 1 (2 members)
- Marvel vs Capcom 2 (5 members)
- Marvel vs Capcom 3 (98 members)
- Marvel vs Capcom Infinite (1 member)
- Mature (2 members)
- Mavado (5 members)
- Maxima (7 members)
- May Jinju Lee (1 member)
- Mech Zangief (2 members)