‘It’s Always Sunny’ Crossover
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Rob McElhenney of “It’s Always Sunny in Philadelphia” fame makes a brief appearance in season eight as a member of Euron Greyjoy’s crew whom Theon kills during his rescue of Yara. McElhenney was returning the favor for Benioff and Weiss, who wrote a season nine episode of “It’s Always Sunny” and appeared in another in season 12.