Source: comicvine.gamespot.com
8. Darkdevil
(Spider-Girl, Marvel Comics)
What If was my favorite Marvel comic book for a long time, and it’s still my most complete collection of a long run. But it only created one enduring character, that being May "Mayday" Parker. Also known as Peter Parker and Mary Jane Watson's daughter Spider-Girl.
May was so successful that Marvel created the MC2 line of books to follow up on her potential future. And one of the characters in that run was Reilly Tyne, alias Darkdevil.
Reilly was the son of Spider-Man clone Ben Reilly, the Scarlet Spider. But he suffered when an attempt to fuse Zarathos (the demon that powers the Ghost Riders) to Daredevil's body went wrong and both wound up fused to Reilly, creating Darkdevil.
Reilly used Zarathos' Ghost Rider powers in conjunction with Daredevil's skills to be a hero, although his demonic clone nature left him kind of anti-social. But hey, he looks really cool, so it’s all okay.
