6) Spider-Girl (Mayday Parker)
Though Peter Parker has never had any kids in mainstream Marvel continuity, he’s had a couple of baby Spider-sprogs in the various parallel worlds out there. Recently, the ongoing Renew Your Vows series showcases a timeline where Peter and Mary Jane had a daughter named Annie who’s inherited her father’s powers.
In effect, Annie Parker’s an update of another daughter of Spider-Man. First created in 1998 as part of the MC2 universe imprint, May ‘Mayday’ Parker was likewise the result of Peter and M.J.’s marriage. After Peter lost his leg in a brutal final battle with Green Goblin, he left behind the Spider-Man mantle and didn’t tell his daughter about her inherited powers until she was a teenager. Like father like daughter, once she found out Mayday became Spider-Girl.
The character was hugely successful back in the day, with her solo series outlasting various attempts at cancellation thanks to the support of the fans. In the end, Spider-Girl was crowned as the longest-running Marvel comic series with a female lead.