TMDb/It's Always Sunny in Phil TV Guillermo del Toro returns to It's Always Sunny in Philadelphia amid Oscar buzz for his film Frankenstein. A surprising TV comeback for the acclaimed director. March 11, 2026 AceShowbiz - Acclaimed filmmaker Guillermo del Toro is set to make a surprising comeback to television by reprising his role in the longest-running live-action sitcom ever, It's Always Sunny in Philadelphia. This announcement comes amid his busy schedule, including multiple projects and a highly anticipated return to the Academy Awards.