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Comics and the characters created for them
No, Batgirl is a DC Comics character, specifically associated with the Batman series. Marvel Comics has its own distinct set of superheroes and characters.
Many Marvel Comics characters don't look human. You would really need to narrow down your search by title before anyone can really answer. Some reasons these characters may not look human are they are mutants, humans mutated in other ways, aliens, disguised, disfigured by accident, etc. I would suggest checking out marvel.wikia.com for all of your marvel comics character needs.
The very first Marvel comic book was "Marvel Comics #1," published in 1939. This issue featured the debut of characters like the Human Torch and Namor the Sub-Mariner.
Marvel Comics has been involved in various exchange deals with other comics publishers over the years. Some notable exchanges include trading characters with DC Comics in the past. Additionally, Marvel has collaborated with companies like Image Comics and Valiant Comics for crossover events.
Alice (Resident Evil series)Amber (Eclipse Comics)American Dream (Marvel Comics-MC2)Andromeda (DC Comics)Andromeda (Marvel Comics)Angela (Image Comics)Argent (DC Comics)Atom Eve (Image)Atomic Betty (television series title character)Aurora (Marvel Comics)B.Orchid (Killer Instinct)Barb Wire (Dark Horse comics)Barbarella (V-Magazine)Beautiful Dreamer (DC Comics)Bella Donna (Marvel Comics)Binary (Marvel Comics)Black Canary (DC Comics)Black Cat (Harvey Comics)Black Cat (Marvel Comics)Black Cherry X ( 2000 AD)Black Orchid (DC Comics)Black, Vera (aka Sister Superior) (DC Comics)Black Widow (Marvel Comics)Black Widow (Timely Comics)Blink (Marvel Comics)Blue Ranger (Power Rangers)Boom Boom (Marvel Comics)Bounty (Marvel)Blitzkrieg (Antarctic Press)Brandy (Image Comics)Buff (Marvel Comics)Bumblebee (DC Comics)Burnout (Eclipse Comics)Callisto (Marvel Comics)Captain Marvel (Marvel Comics)Captain UK (Marvel Comics)Captain Universe (Marvel Comics)The Cat (Marvel Comics)Cat Claw (Malibu comics)Celsius (DC Comics)Cerise (Marvel Comics)Circuit Breaker (Transformers)Chance (Marvel Comics)Chase (DC Comics)Abbey Chase (see Danger Girl)CherryCinnamon (DC Comics)Clea (Marvel Comics)Cobweb (America's Best Comics)Colt (AC Comics)Comet Queen (DC Comics, Legion of Super-Heroes}Copycat (Marvel Comics)Crimson Avenger III (DC Comics)Crimson Curse (Marvel Comics-MC2)Crimson Fox (DC Comics)Lara Croft (Tomb Raider)Crystal (Marvel Comics)Cutey Honey (title character)Cyclone (DC Comics) (DC Comics)Dagger (Marvel Comics)Dart (DC Comics)Dawn (Sirius Comics)Dazzler (Marvel Comics)Dead Girl (Marvel Comics)Karolina Dean (Marvel Comics)Deep Blue (DC Comics)Destiny (Marvel Comics)Devi (Virgin Comics)Diamond (Blink Comics)Diamondback (Marvel Comics)Diamond Lil (Marvel Comics)Brittany Diggers (Antarctic)Doctor Light (DC Comics)Doll Girl (DC Comics)Dolphin (DC Comics)Domino (Marvel Comics)Domino Lady (Pulps)Dove as Dawn Granger (DC Comics)Dragonfly (AC Comics)Dream Girl (DC Comics)Dumb Bunny (DC Comics)Dusk (Marvel Comics)Dust (Marvel Comics)Dynamite Girl (Antarctic Press)Echo (Marvel Comics)Empress (DC)Energizer (from Power Pack) (Marvel)Enigma (M6kid)Faith (DC Comics)Fallen Angel (DC Comics)Fathom (Aspen Comics)Feral (Marvel)Fever (DC Comics)Fire (DC Comics)Firebrand (DC Comics)Flash (Just Imagine...) (DC Comics)Flash (Tangent) (DC Comics)Tara Fremont (AC comics)Free Spirit (Marvel Comics)Adrienne Frost (Marvel Comics)Emma Frost (Marvel Comics)Fury I (DC Comics)Fury II (DC Comics)Dorothy Gale (Wizard of Oz}Ganymede (Marvel Comics)Ghost (Dark Horse Comics)Glitter (Marvel - New Universe)Glory (various)Gloss (DC Comics)Godiva (DC Comics)Grace (DC Comics)Jean Grey (Marvel Comics)Max Guevara (from live-action TV show Dark Angel)Gypsy (DC Comics)Halo (DC Comics)Harbinger (DC Comics)Hawk as Holly Granger and Sasha Martens (DC Comics)Molly Hayes (Marvel Comics)Hellcat (Marvel Comics)Heather Hudson, formerly Sasquatch, Exiles member (Marvel Comics)Huntress (DC Comics)Husk (Marvel Comics)Ice (DC Comics)Insect Queen (DC Comics)Indigo (DC Comics)Invisible Scarlet O'Neil (Newspaper Strip)Invisible Woman (Marvel Comics)Natasha Irons (DC Comics)Isis (DC Comics)Jack Phantom (America's Best Comics)Jade (DC)Jaguar (Archie Comics and then Impact Comics)Jet (DC Comics)Jocasta (Marvel Comics)Jolt (Marvel Comics)Rhea Jones (aka Lodestone) (DC Comics)Joystick (Marvel Comics)Jubilee (Marvel Comics)Jungle Girl (various)Jennifer Kale (Marvel Comics)Bette Kane (DC Comics)Nova Kane (First)Karma (Marvel Comics)Laurel Kent (DC Comics)Kid Quantum III (DC Comics)Kismet (Marvel Comics)Misty Knight (Marvel Comics)Knockout (DC Comics)Kris aka "Golden Guardsman" (Innovation)Kristin (Comics Interview)Lady Luck The Spirit SectionJuniper Lee (The Life and Times of Juniper Lee)Liberty BelleLightning Lass (a.k.a. Light Lass, Gossamer, Spark) (DC Comics)LimeLittle Mermaid (DC Comics)Looker (DC Comics)Loria (see Blood Pack (comics) version) (DC Comics)M (Marvel Comics)Madame .44 (DC Comics)[3]Madame Xanadu (DC Comics)Madame Mirage (Top Cow Productions)The Magdalena (Top Cow Productions)Magdalene (Marvel Comics)Magma (Marvel Comics)Maiden JusticeMarrow (Marvel Comics)Marvel Girl (Marvel Comics)Mary Marvel a.k.a. Captain Marvel (DC Comics)Mindy (Marvel Comics)Aspen Matthews (Aspen Comics)Maya (DC Comics)Medusa (Marvel Comics)The Menagerie (DC Comics)Merry, Girl of 1000 Gimmicks (DC Comics)Mirage (DC Comics)Miss America (DC Comics)Miss America (Marvel Comics)Miss FuryMs. Victory (AC comics)Mockingbird (Marvel Comics)Moonstone (Marvel Comics)Motormouth (Marvel Comics)Ms. Liberty (Antarctic Press)Ms. Mystic (originally Pacific Comics, then Continuity Comics)Mystique (Marvel Comics)Negative Woman (DC Comics)Nemesis II (DC Comics)Nemesis (Marvel Comics)Neon Queen (Mystery Inc. member) (Image Comics)Night Girl (DC Comics)Nightshade (DC Comics)Nikki (Marvel Comics)NiobeNocturne (Marvel Comics)Onyx (DC Comics)Oracle (DC Comics)Oracle (The Matrix)Penance (Marvel Comics)Phantom Girl a.k.a. Apparition (DC Comics)Phantom LadyPhoenix (Marvel Comics)Photon (Marvel Comics)Pink Ranger (Power Rangers)Pixie (Marvel Comics)Polaris (as Overdrive) (Marvel Comics)Kim Possible (from the self-titled cartoon series)Power Girl (DC Comics)Power Princess (Marvel Comics)Princess Daisy (Mario)Princess Peach (Mario)Princess Zelda (Legend of Zelda)Queen of SwordsJesse Quick (DC Comics)Cecilia Reyes (Marvel Comics)Rad (AC comics)Rainbow (Eclipse Comics)Rampage (DC Comics)Raptor (Marvel Comics-MC2)Rapture (Transformers)Raven (DC Comics)Red Guardian (Marvel Comics)Red Sonja (Marvel Comics)Ellen Ripley (Alien series)Robin as Stephanie Brown or Carrie Kelly.Rogue (Marvel Comics)Rose and Thorn II (DC Comics)Willow Rosenberg (Buffy the Vampire Slayer)Sabra (Marvel Comics)Sabrina, the Teenage Witch (Archie Comics)Sage (Marvel Comics)Saturn Girl (DC Comics)Scarlet Witch (Marvel Comics)ScorpionSecret (DC Comics)Selene (Underworld)Shadow Lass a.k.a. Umbra (DC Comics)Shadow Hunter (Virgin Comics)Shanna the She Devil (Marvel Comics)Shamrock (Marvel Comics)She-Hulk (Marvel Comics)She-Ra [She-Ra: Princess of Power]She-Thing (Marvel Comics)She-Venom (Marvel Comics)Sheena (Wags)Shrinking Violet (DC Comics)Silhouette (Marvel Comics)Silver Sable (Marvel Comics)Silver ScorpionSkids (Marvel Comics)Silver Fox (Marvel Comics)Snowbird (Marvel Comics)Speedy II (DC Comics)Spider Girl (DC Comics)Spider-Girl (Marvel Comics-MC2)Spider-Woman (Marvel Comics)Dorothy Spinner (DC Comics)Spitfire (Marvel Comics)Spoiler (DC Comics)Spellbinder (Harmony Concepts)Squirrel Girl (Marvel Comics)Stacy X (Marvel Comics)Stardust (AC comics)Star-Spangled Kid (DC Comics)Stature (Marvel Comics)Stinger(Cassandra Lang) (Marvel Comics-MC2)Storm (Marvel Comics)Stunner (Marvel Comics)Buffy Summers (Buffy the Vampire Slayer)Rachel Summers (Marvel Comics)Sun Girl (Marvel Comics)Superwoman (DC Comics)Surge (Marvel)Sydney Savage (see Danger Girl)Tank Girl (published by Dark Horse Comics)Tara (Marvel Comics)Terra (DC Comics, Teen Titans)Thor Girl (Marvel Comics)Thunder III (DC Comics)Topaz (Marvel Comics)Traci 13 (DC Comics)Triplicate Girl a.k.a. Duo Damsel, Triad (DC Comics)Donna Troy (DC Comics)Tsunami (DC Comics)Turbo (Marvel Comics)Valkyrie (Marvel Comics)Venus (Marvel Comics)Vindicator (Marvel Comics)Virtuous Venus (Harmony Concepts)Vixen (DC Comics)Vogue (various)Wallflower (Marvel Comics)The Wasp (Marvel Comics)The White Witch (DC Comics)Wild Thing (Marvel Comics-MC2)Wind Dancer (Marvel Comics)Colleen Wing (Marvel Comics)The Woman in Red (Standard Comics)Wonder Girl (DC Comics)Wonder Tot (DC Comics)Wonder Woman (DC Comics)Wonder Woman (Just Imagine...) (DC Comics)Word Girl (Television series title character)X-23 (Marvel Comics)Xena - Xena: Warrior PrincessXS (DC Comics)Yellow Ranger (Power Rangers)
There have been many of them.
The Marvel Ultimate Alliance game series is developed by Marvel Games and published by Activision, featuring Marvel Comics characters. Link and Samus are characters from Nintendo's Legend of Zelda and Metroid franchises, respectively, and are not part of the Marvel Comics universe. Therefore, they are not included in the Marvel Ultimate Alliance games.
Martin Goodman founded Marvel Comics.
Marvel Comics got their ideas from their creative teams. A lot of their most famous characters were completely original ideas when they were created. But, some of the inspiration DID come from Marvel trying to compete with DC. Obviously, it worked... :P
Stan Lee didn't sell Marvel Comics himself; Marvel Entertainment, the parent company of Marvel Comics, was sold to The Walt Disney Company in 2009. The sale was primarily driven by financial reasons and the opportunity for Disney to acquire a wide range of popular characters for their media empire.
yes silver surfer is a marvel comics production