A few years ago, I was shocked to be watching an episode of Game of Thrones when I noticed a cameo from Mastodon members Brann Dailor, Brent Hinds and Bill Kelliher as wildlings turned white walkers. Hinds said earlier in the year that they would be back on the show, and he wasn't kidding.

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Mild spoilers for Game of Thrones season 7 episode 1 ahead.

During the second scene of the seventh season premiere of Game of Thrones, there was a scene where all the white walkers were marching and you could very clearly see Mastodon drummer Brann Dailor walking amongst them. Click to see the full size:

The episode overall had very little screen time wasted (except for that random Ed Sheeran cameo). Everything meant something and I'm excited to have the show back and head towards the climax.

The creators of the show have been outed as big metalheads by Mastodon in a previous interview, and fans of the band, which is how they got the invite. They actually went into detail on exactly how it happened. The show even released a mixtape of metal tunes a few years ago. Just recently, the character of the Night King released a chilling Spotify playlist.

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In fact, there's a bunch of metal Game of Thrones material out there: