Reprising the role of Loki, Thor’s adopted brother with major sibling rivalry issues, Tom Hiddleston starts out The Avengers bent on ruling humanity on Earth since he’s been banished from Asgard. Loki’s a demigod with immense power, and Hiddleston says Loki maintains his look of intended majesty with one heck of an ornate costume: “On one level, it’s incredible because it does so much of the work for me. When you’re wearing 30 pounds of leather, then you get very hot, and then all the heat that would normal escape through your head is just kind of encased inside this steel balaclava and your brain slowly turns to scrambled eggs… so it has its challenges.”