Doctor Doom is one of the biggest threats in the Marvel Universe. The ruler of Latveria has tangoed with just about every longtime hero and come out victorious numerous times. However, Doom was badly embarrassed during a fight with one of Marvel's most unlikely heroes: Squirrel Girl.

Squirrel Girl, whos' real name is Doreen Green, first appeared in Marvel Super-Heroes #8. Her powers include super-strength, agility, a squirrel-like tail, and she can talk to squirrels, an ability that's come in handy. Squirrel Girl's no joke, though. She's faced off and come out victorious against both Galactus and Thanos. But, before she took on the cosmic powerhouses, she defeated Doctor Doom with the help of her furry friends.

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In Squirrel Girl's first appearance, she teamed up with Iron Man against Doctor Doom. Doreen was very keen on becoming Tony Stark's new partner, but after encountering the longtime Fantastic Four villain, Iron Man and Squirrel Girl are both captured. Doreen ends up impressing Iron Man after her squirrel friends help chew through his restraints. Meanwhile, Doctor Doom is overwhelmed by tons of squirrels, who chew on his costume to the point where his cloak is destroyed. Realizing he's losing to a group of ravenous squirrels, Doom bails.

Squirrel Girl Defeats Doctor Doom

While Squirrel Girl's heroism isn't enough to convince Stark that she should become his partner, he compliments her performance and tells her to look him up after she graduates from school. As Squirrel Girl leaves, Iron Man tells himself "they're not going to believe this at the next Avengers meeting."

Squirrel Girl might not have become Iron Man's partner, but in the fight, she earned his trust. No matter how silly it will always be that she took down Doctor Doom with a group of squirrels, she ultimately defeated him with her outside the box approach. Doom was no match for the squirrels and was handed one of his most embarrassing defeats to date. The issue set the tone for future Squirrel Girl battles. It doesn't matter how menacing or how much power her opponent has, Doreen Green is always up to kick butts and eat nuts. What other heroes can say they've taken on Doctor Doom, Galactus, and Thanos and come out on top? Squirrel Girl or her mini squirrel army isn't to be reckoned with - Doom found that out the hard way.

Next: Doctor Doom Can Join The MCU, and The Comics Just Showed How