I know you folks have missed the cover theme games, so I figured I'll give you a whopping FIVE cover theme games to solve!
You know the game - I show three covers. They all have something in common, whether it be a character, a trait all three characters share, locale, creator, SOMEthing. And it isn't something obvious like "They all have prices!" "They all have logos!" "They all feature a man!" etc.
In addition, please note that you must have some familiarity with comic book history to correctly guess these comics. You cannot guess the connective theme just by looking at the covers solely, you must have some knowledge beyond just the covers.
Otherwise, good luck and enjoy!