The first Marvel character "Spider-Girl" was May "Mayday" Parker, a superhero in Marvel's MC2 Universe, where she is analogous to Spider-Man. (1998-2008)
The second Marvel Spider-Girl (nee Araña) is Anya Corazon, who had a crossover role in MC2 as well as appearances as an historically earlier Spider-Girl.
The DC character Spider Girl (no hyphen) was Sussa Paka, a 30th century member of the Adult Legion of Superheroes and the group Workforce. She was also known as Wave, and had prehensile red hair.
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Superwoman has had many alter-egos:
Luma Lynai
"Diana" (Earth-Three)
Kristin Wells
Dana Dearden
Lois Lane (Antimatter Earth)
Lois Lane (Earth-Three)
Lucy Lane (New Krypton)
Jessica Drew or Veranke depending on if you mean her human identity or the name of the Skrull that that has been posing as her since New Avengers #1.
The real name of Spider-Girl is May "Mayday" Parker. She is the daughter of Peter Parker (Spider-Man) and Mary Jane Watson. She first appeared in the comics in the 1990s.