Spider-Girl (May “Mayday” Parker) is a fictional superheroine appearing in American comic books published by Marvel Comics. The character appears in the MC2 universe. The character was created by Tom DeFalco and Ron Frenz as the teenage daughter of Peter Parker (Spider-Man) and Mary Jane Watson, and first appeared in What If (vol. 2) #105 (February 1998). She later acquired her own ongoing comic book, Spider-Girl, written by DeFalco and drawn by Frenz and Pat Olliffe, which was the longest-running superhero book with a lead female character ever published by Marvel before being relaunched as The Amazing Spider-Girl, and later The Spectacular Spider-Girl.