Superman VS Hulk!

Who could ever resist squirrels? (Or fluffy bunnies for this matter)

Among those he has defeated: Wolverine, Dr. Doom Thanos and Galactus and many more.

And her powers are summoning squirrels and some fighting skills.

(Does having a voluptuous body count?)

It's a tongue-in-cheek Marvel thing...something a DC fan wouldn't (couldn't) understand.

For educational purposes:
Following her defeat of Doctor Doom,[7] an ongoing joke depicts Squirrel Girl repeatedly attaining victory over various villains, some of whom are considered to be more powerful than she is. Typically, these victories occur off-panel, though some, like her battles with Deadpool,[13] MODOK,[11] and Wolverine,[17] are shown. Her victories often result from her opponent's overconfidence, weakness from an earlier fight, or creative use of her powers. For example, her defeat of Bi-Beast: While visiting squirrel friends in Central Park, Squirrel Girl came across the Thing fighting Bi-Beast. She told the squirrels to retrieve the smelliest garbage they could find and place it around the combatants, resulting in everyone having to hold their noses. Bi-Beast had to use both hands to hold his nose, leaving himself defenseless, allowing the Thing to knock him out.[12]


Squirrel Girl's defeat of Thanos is an ambiguous one. Uatu, the Watcher, was present at the battle and claimed Squirrel Girl defeated the genuine Thanos and not a clone or copy.[11] Thanos has since claimed he has perfected a means of creating clones of himself that could fool even "the most cosmic of beings." Adding to the ambiguity is the fact the reveal comes from the mind of a clone whose memory had been altered.


Personally, I stick with the Beyonder being the strongest Marvel character, but I'm not up on the Universe.