Here's a cute idea I thought of. It's similar to "Marry one, F one, Kill one", but with super heroes.
PICK: one to kill, one's powers to steal, and one you would like to sidekick with on one of their adventures.
THEN: Choose 3 more heroes/villains for the next person to choose from, to keep the game going.
I guess you can repeat characters, but try not to repeat entire groups of 3, unless you don't think it got enough attention or something.
I WILL START:
Spiderman, Captain America, Wolverine
SP (steal powers): Wolverine
SK (sidekick): Captain America
Hulk, Thor, Superman