It was recently announced that Chiwetel Ejiofor, the British actor who gave outstanding performances in movies like 12 Years a Slave and shows like Joss Whedon’s Firefly, has been cast as Baron Mordo. Oh, Baron Mordo? He’s just the archrival and nemesis of Doctor Strange, who will be played by Benedict Cumberbatch in the movie of the same name.

But, like, who even is that guy?

Luckily, Dan Casey is here to give you the full rundown of who exactly Baron Mordo is so you can be completely in the know when the film is released next year. Like, did you know he’s basically a mustachioed Slavic Anakin Skywalker? Mordo and Strange both trained under the Ancient One in the dark arts, but Mordo wanted supreme power, leading to Stephen Strange teaming up with the Ancient One to defeat his opposite number. And that’s just the tip of the magical iceberg.

Once you enter The Dan Cave, all your questions will be answered.