No, Batgirl is a DC Comics character, specifically associated with the Batman series. Marvel Comics has its own distinct set of superheroes and characters.
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The Defenders is comic books
published by Marvel Comics. It includes a number of characters
including Moondragon.
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Some popular girl superheroes include Wonder Woman, Supergirl, Captain Marvel, Black Widow, Storm, and Batgirl. These characters are known for their bravery, strength, and heroism in comic books and movies.
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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.