Joss Whedon

River Tam River Song’s namesake is the central mystery of Joss Whedon’s Firefly and Serenity. What did the Alliance and Blue Sun do to her? What superpowers does she actually have? And why is she so valuable to the Alliance that they’re willing to kill anyone who’s even seen her? We eventually find out all about River’s past, her super-ninja powers and her connection to an atrocity that the Alliance wants to keep secret — but River? Still awesome and fascinating.

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Angel When we first meet him on Buffy the Vampire Slayer, he’s a shadowy figure who knows more than he’s saying, and he seems to be there for Buffy whenever she needs him — but who is he? We eventually learn he’s a vampire, but it takes a couple seasons to get the whole story about how he got his soul and why he’s obsessed with Buffy. But even after countless flashbacks on BtVS and his own series, Angel still has a certain ineluctible cool factor. (Despite the ill-advised attempt to give him mystery again, by turning him into the supervillain Twilight.)

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