7. Winter Soldier - Captain America: The Winter Soldier
After Captain America (Chris Evans) was introduced to a brave new world in The Avengers, Captain America: The Winter Soldier sees him continuing to adjust to the world around him, and teaming with Natasha Romanoff (Scarlett Johansson) to face a prominent enemy in Washington D.C., who many have speculated to be Robert Redford's Alexander Pierce, a S.H.I.E.L.D. leader perhaps turned rogue? Nevertheless, the more compelling, concrete promise comes by way of The Winter Soldier, a bionic killing machine who is actually Steve's brainwashed friend Bucky (Sebastian Stan), who fell to his death at the end of the first film. Note that he fell into the snowy abyss below; it would follow that his body would be preserved in the icy tundra, then it would be easy for him to be initiated into the Winter Soldier program. Though we're still waiting on our first official glimpse, set pictures have shown off a scary-looking Winter Soldier causing mayhem in the streets, totally in the vein of the comics. This one should be a doozy.