Warning: This article contains rather big spoilers for Game of Thrones Season 5 Episode 8: Hardhome. Tread lightly.
The final 20 minutes of Game of Throne's eighth episode certainly came as a surprise to both readers and non-readers of the original Song of Ice and Fire book series. We were treated to an extended, and bloody battle (although massacre might be a more accurate term) in which Free Folk and Night's Watch clashed with the undead hordes of the White Walkers.
The battle does not directly feature in the book series, although it is referred to, and it seems director Miguel Sapochnik used this opportunity to exercise some creative flair. We were treated to a giant kicking some wight ass, Jon Snow dispatching a White Walker and a rather horrific scene in which a new character is gnawed apart by undead children. However, did you spot the rock band cameo? No, I didn't either. But, hidden amongst all the carnage was a cameo with American heavy metal band Mastodon.
You could be forgiven for missing it, since the action was so kinetic and frantic you didn't really get a good chance to spot faces - however, band members Brann Dailor, Bill Kelliher, and Brent Hinds all suited up as Wildlings and got involved in the action.
According to a press release, the band was personally invited to the North Ireland set by showrunner Dan Weiss. Brann Dailor has since described the experience, stating:
It was such an incredible experience to be on set as extras for our collective favorite show Game Of Thrones and to be wildlings murdered and then brought back to life by White Walkers was beyond amazing. I watched my best friends Brent and Bill, murdered right in front of me as I myself was stabbed in the stomach and had my throat slit multiple times, and I didn't mind at all. It made me love being in Mastodon even more. We are more than privileged and honored to have been a part of one of the greatest stories ever told on film, and the catering wasn't bad either.
Try and see if you can spot any of the gang in the clip below:
As well as performing as zombie-fodder, Mastodon also contributed the song "White Walker" to the Catch the Throne Vol. 2 mixtape - which seems like a fitting choice.
Of course, Mastodon isn't the first band to appear in Game of Thrones, and musical cameos are starting to seem like a bit of a tradition. Coldplay's Will Campion was invited to the Red Wedding, while Icelandic band Sigur Rós played (momentarily) at King Joffrey's wedding. Remind yourself of that below:
Furthermore, American rock band The National also recorded a cover of the Rains of Castamere which played over the closing credits of the Season 2 episode, Blackwater.