The Only Character Explainers You Need Before Superman

No one really needs an explainer for Superman the character, but for the rest of the weirdos in his new movie, like Mister Terrific (who?) some explanation is needed. Whether it's Hawkgirl and Metamorpho or that weird, mean-looking Green Lantern -- or even just a deep review of Lex Luthor's whole deal -- this the only explainer you need.