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The Weirdest Cameos In 'Game Of Thrones' History

List RulesVote up the most surprising 'Game of Thrones' guest stars.

Most of the cast of Game of Thrones were relative unknowns before the show premiered, but they've since become superstars since. That's not necessarily true of everyone in the series, however, as many genuine stars have made guest appearances over the seasons. This may be yet another thing you forgot about Game of Thrones, as the cameos are usually subtle - but once you notice them, they are hard to ignore. These may not be the best Game of Thrones characters, but that doesn't stop them from totally derailing viewers' focus. 

There have been a wide variety of reactions to the various Game of Thrones cameos over the seasons, from quiet delight to outright disdain. Many of them are just plain strange, leaving audiences to question if they really just saw Ed Sheeran in full Lannister armor. Whether they are famous pop stars, respected comedians, or even star athletes, the strangest celebrity cameos in Game of Thrones history pretty much always pull you back to reality. 

  • Photo: HBO

    Rob McElhenney is the co-creator and costar of It's Always Sunny in Philadelphia, one of the longest-running sitcoms of all time. Known by IASIP fans as Mac, the comedic actor appears in the Season 8 premiere as one of Euron Greyjoy's soldiers. He is quickly dispatched by an arrow to the eye as Theon and his crew board a ship to rescue Yara.

    While this may seem like a strange choice for a cameo, McElhenney has actually worked with the Game of Thrones showrunners in the past. The duo wrote an episode of It's Always Sunny in Philadelphia titled "Flowers for Charlie," in which Charlie believes he has taken a substance that grants him super intelligence. 

    Is this a surprising cameo?
  • Photo: HBO

    Mets pitcher Noah Syndergaard, nicknamed "Thor" by his fans, makes a brief appearance in the Season 7 episode "The Spoils of War" as a Lannister soldier. Perhaps appropriately, the professional pitcher plays a spear thrower. He manages to take out a Dothraki soldier with a well-aimed throw. Unfortunately for Mets fans, Syndergaard was likely incinerated by Drogon shortly after his appearance. 

    Is this a surprising cameo?
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    Royd Tolkien

    Photo: HBO

    There would arguably be no Game of Thrones if it wasn't for the works of literary giant J.R.R. Tolkien, so it's fitting his great-grandson makes an appearance on the show. Royd Tolkien appears as a Wildling in the Season 5 episode "Hardhome." Outside of GoT, he also appears in Return of the King and The Hobbit: The Desolation of Smaug.

    Is this a surprising cameo?
  • Photo: HBO

    Famous country musician Chris Stapelton has a cameo so brief, you almost definitely missed it. He appears in the Season 8 episode "The Long Night" as a corpse on the battlefield. When the Night King attempts to thwart Jon Snow by resurrecting an enormous number of dead, Stapelton is one of the fallen to reanimate. His bassist and tour manager are also featured in the episode. 

    Is this a surprising cameo?