Source: cbr.com

9. Aunt May

(Spider-Man, Marvel Comics)

Yeah, this one might be controversial. But it's how I honestly feel.

Aunt May died during one of the worst periods for Spider-Man comics, but the quality of her death isn’t why she shouldn't have come back. It's that she just shouldn't be around any more. I love Aunt May as a character, but having her still around forcibly regresses Spider-Man in ways that I don't like.

Let Peter Parker grow up. Let him be an adult and have his own life. Aunt May was already way past retirement age when Peter Parker was 15. Now that he's God-knows-how-old (22? 38?), are we really expecting Aunt May to still be spry and out and about? Hell, I've lost many similarly aged relatives this year, and I must be more than ten years Parker's junior. Comic book characters never get old, but they do need to get older.

Superman has a kid. Batman has a kid. But Spider-Man is still showing up on Sundays to get wheatcakes with his elderly aunt? Really?