The superhero character Superman has long been recognized to have been based on the Christ/Messiah story. Kal-el is sent by his father to the Earth where he is raised by foster parents. The "el" of his name is the Hebrew root meaning "divine," or "god" and, in its plural form (more about that in a later post) occurs as
elohim, one of the biblical names of God.
There are hints during his childhood and adolescence that he is "special" but the full truth is not apparent until he reaches adulthood, when he exhibits powers and abilities not available to normal humans. In one major story line Superman even rises from the dead.
During his childhood he is raised as Clark Kent by a kindly older couple named Jonathan and Martha Kent. A little known fact is that the character is a Christian, raised as a Methodist in Smallville, Kansas. The two creators of the character were Jewish.
While overt religion was historically little mentioned in comic books, it was always there, slipped in as asides and used as the basis for numerous story lines. Overtly Christian superhero comic books and television programs have begun to appear with characters such as Bibleman, Biblegirl, The Crusader, and the Crossbreeds.
The religious beliefs of many comic book superhero/supervillain characters have long been established. Many are more nominal in their religious beliefs than practicing. For most of the characters their religious beliefs are used mainly as story elements to aid in the story writing and not as any sort of real religious statement by the writers. The most obvious example is the blind Marvel Comics superhero, Daredevil. Daredevil struggles mightily with his intense catholic guilt over his very real beliefs versus his very violent methods of fighting crime and corruption.
http://www.adherents.com/lit/comics/comic_book_religion.htmlhttp;//www.comicbookreligion.com
Here is a short list:
The Ancient One: Tibetan Buddhism
Angel: Episcopalian
Ant Man: atheism
Aquaman: Greco-Roman
Avengelyne: a warrior angel
Bard Wire: atheism
Batman: Episcopalian/Roman Catholic
Bibleman: Generic Christianity
Blackhawk: Communism, Atheism
Black Widow: Communist/Russian Orthodox
Blue Devil: Roman Catholic
Brother Voodoo: Voodoo
Captain America: Protestantism
Captain Britain (Brian Braddock): Anglican and Occultism
Colossus: atheism
John Constantine: occultism
Crossbreeds: Christian
The Crusader: Christianity
Cyclops: atheism
Daredevil: Roman Catholic
Deadman: Hinduism
Doctor Doom: Occultism
Dr. Druid: Druidism and Tibetan Buddhism
Dr. Fate (Kent Nelson): occultism
Doctor Strange: Magic, Sorcery
Doomguy: Roman Catholic
Dust: Muslim
Mr. Fantastic: Humanism
Firebird: Roman Catholic
Ghost Rider: powered by Satan
Green Arrow: Marxism
Green Lantern (Hal Jordan is one of the several thousand Green Lanterns): Judaism
Green Lantern (Simon Baz is one of the several thousand Green Lanterns): Muslim
Hawkeye: nominally Christian
Hawkman: Ancient Egyptian
HellBoy: Roman Catholic
Herbie the Fat Fury: Church of Herbangelism
Howard the Duck: Roman Catholic
The Hulk: atheism
The Human Torch: Episcopal
Huntress: Roman Catholic
Iron Man: atheism
Jacob Raven: Mormon
Josiah X: Muslim
Kingpin: Roman Catholic
Lightning Lad: an extraterrestrial nature religion
Loki: Norse Religion
Madman: Mormon
The Magdalena: Roman Catholic
Magneto: Judaism/Agnosticism
Major Victory: powered by a supernatural spirit
Mandrake the Magician: Buddhism
Miss America: powered by a supernatural spirit
Moon Knight: Judaism
Ms. Marvel: Muslim
Namor, the Sub-Mariner: Polytheism
Nightcrawler: Roman Catholic
Odin: Norse Religion
The Phantom Stranger: He is literally Judas Iscariot and is the Wandering Jew
PowerMark: Christian
The Punisher: Roman Catholic/Atheist
Quicksilver: Judaism
Ragman: Judaism
Red Guardian: Communism
Red Skull: Nazism
The Riddler: atheism
Rogue: Southern Baptist
Sabra: Judaism
Saturn Girl: either Roman Catholic or Anglican
Savage Dragon: Atheist
Scarlet Witch: Judaism, Occultism
Shadowcat: Judaism
Shadow Lass: an extraterrestrial Talokian ancestor worship religion
Shadowman: Voodoo
Shaman: Native American shamanism
Shazam: mixed religious origins
She-Hulk: nominal Christian
Sif: Norse Religion
Silver Surfer: alien Zenn-La religion
Spawn: powered by Satan
The Spectre: (Judeo-Christian)
Starlight: Generic Christian
Steel Fist: powered by a supernatural spirit
Sunfire: Shintoism
Superman: Methodist
Talisman: Native American shamanism
The Thing: Judaism
Thor: Norse Religion
Johnny Thunder: Mormon
Thunderbird (John Proudstar): Apache Native American religion
Timeslip: Hinduism
U.S. Agent: Protestantism
Venom/Eddie Brock: Roman Catholic
Vixen: Anglican and African indigenous religion
Warrior Nun Areala: Roman Catholic
Wiccan: Judaism
Witchblade (Sara Pezzini):Roman Catholic
Wolfsbane: Presbyterian
Wonder Woman: Greco-Roman
Professor Charles Xavier: Judaism
X-Knights: Muslim
X-O Manowar: Paganism and Arianism
Yondu: the extraterrestrial Centaurian religion
Zatanna: occultism
Zeus: ancient Greek religion
Zuariel: Christian