H
- Hades (see Pluto)
- Hammerhead (comics) in The Amazing Spider-Man #113
- Hardcore in Cage #1
- Hate Monger in Avengers #341
- Hawkeye in Tales of Suspense #57
- Heart Attack in Ghost Rider #8
- Heimdall in Journey into Mystery #85
- Hel in Thor #176
- Hela in Journey into Mystery #102
- Heliopolis in Thor #240
- Hellfire Club in X-Men #129
- Hellstorm (as Daimon Hellstrom) in Ghost Rider (vol. 2) #2
- HellCat (Patsy Walker) in Avengers #144
- Henry Pym in Tales to Astonish #27, January 1962
- as Ant-Man in Tales to Astonish #35, September 1962
- as Giant-Man in Tales to Astonish #49, November 1963
- Her in Marvel Two-in-One #61
- Hercules in Journey into Mystery Annual #1
- High Evolutionary in Thor #134
- Hobgoblin in The Amazing Spider-Man #238
- Hoggoth (see Vishanti) in Strange Tales #116
- Hogun in Journey into Mystery #119
- Horsemen of Apocalypse in X-Factor #15
- Howard the Duck in Adventure into Fear #19
- Hulk in Incredible Hulk #1
- Human Cannonball in Incredible Hulk #3
- Human Torch
- I: Jim Hammond in Marvel Comics #1, October 1939
- Silver Age reappearance in Fantastic Four Annual #4, 1966
- II: Johnny Storm in Fantastic Four #1, November 1961
- I: Jim Hammond in Marvel Comics #1, October 1939
- HYDRA in Strange Tales #135
- Hydro-Man in The Amazing Spider-Man #212
- Hyperion in The Avengers #69
- as Zhib-Ran (in Squadron Sinister) in The Avengers #69, October 1969
- as Mark Milton (in Squadron Supreme) in The Avengers #85, February 1971
Read more about this topic: List Of First Appearances In Marvel Comics Publications