It's Always Sunny In Philadelphia: 10 Cameos You (Probably) Missed

10. Guillermo Del Toro

Guillermo del Toro appeared in two episodes of the show, though he was highly unrecognizable. Dressed as Pappy McPoyle, and older member of the McPoyle family, he has a huge beard and long hair, crazy eyes, and he's constantly yelling gibberish. He is first seen in Season 8, Episode 3, “The Maureen Ponderosa Wedding Massacre,” where he briefly rants at Mac, Dennis, and Charlie. Later he appears in Season 11, Episode 7, “McPoyle vs. Ponderosa: The Trial of the Century,” as a witness in a trial. Here he is hiding the key evidence, a bird, underneath his top hat.

Del Toro is a famous filmmaker who has made hits such as Pan's Labyrinth, The Shape of Water, and Hellboy II. He also did Pacific Rim, which Charlie Day (who plays Charlie Kelly) worked on.