Vikings: 10 Mind-Blowing Facts You Didn't Know

10. Floki's Part Of A Famous Swedish Family

At first glance you would never guess, but Gustaf Skarsgård, who plays the eccentric and lovably flawed boat builder and incorrigible trickster Floki, is actually the brother of the gorgeous Alexander Skarsgård, who plays Eric Northman in True Blood. If you don't know Alexander from True Blood, you might have also glimpsed him in Lady Gaga's music video for Paparazzi.

The brothers are also the sons of actor Stellan Skarsgård, a Swedish actor who plays Dr. Erik Selvig in the Marvel Cinematic Universe films and plays Martin Vanger in The Girl With The Dragon Tattoo (the Daniel Craig version)... and the fun facts don't stop there, either. The two are also godsons to Peter Stormare, the funny-looking, albeit creepy bloke who played John Abruzzi in the Fox series Prison Break.

Also... would you believe that Gustaf is four years younger than Alexander? The receding hairline seems to say otherwise.