10. Squirrel Girl - Alison Brie
Squirrel Girl is one of the most underestimated heroes in Marvel Comics history. Her ability to control squirrels may not sound like much, but its helped her defeat the likes of Thanos and Doctor Doom with minimal assistance. The fact hat she currently has her own solo series - The Unbeatable Squirrel Girl - signifies just how popular this mightier-than-youd-expect superhero has become. Squirrel Girl is technically a mutant, though, so there could be some legal issues stopping Marvel from bringing her into the fold. Seeing as Squirrel Girl pops up in just as many Avengers comics as X-Men ones could mean that her rights are shared, though like Quicksilver and Scarlet Witch. As for casting, wed be looking for someone who could embody the meek, unassuming side of Squirrel Girls alter-ego Doreen Green while also pulling off the confident heroic scenes when push comes to shove. Communitys Alison Brie seems like a fine fit, and she also has sizeable comedy chops - always a bonus in the MCU. Additionally, James Gunn of Guardians Of The Galaxy has expressed an interest in directing a Squirrel Girl movie. With his proven mastery of balancing comedy and heroism, he could surely pull this one off with ease.