Charles Peckham Day (born February 9, 1976) is an American actor, screenwriter, producer, director and musician. He is best known for playing Charlie Kelly on It's Always Sunny in Philadelphia for which he was nominated for the Critics' Choice Television Award for Best Actor in a Comedy Series in 2011. In film, he is known for his role as Dale in the films Horrible Bosses (2011) and its 2014 sequel, as well as for his roles in Monsters University (2013), Pacific Rim (2013), The Lego Movie (2014), Fist Fight (2017), Pacific Rim: Uprising (2018), and The Lego Movie 2: The Second Part (2019). From 2018 to 2019, Day was the executive producer on the Fox comedy The Cool Kids.
During the summers of his college years, Day was active in the training programs at the Williamstown Theatre Festival and went on to play the lead role in Dead End, at the Huntington Theatre in Boston
Besides playing Charlie Kelly on the hit FX television series It's Always Sunny in Philadelphia, he is also one of the show's executive producers and one of its writers, along with Rob McElhenney and Glenn Howerton. He has also appeared on several other television shows such as Third Watch, Law & Order, and Reno 911!.
He starred in New Line Cinema's Horrible Bosses in July 2011, with Jason Bateman, Jason Sudeikis, Kevin Spacey, Jennifer Aniston, Colin Farrell, and Jamie Foxx. He also had a role in the 2010 film Going the Distance, alongside Justin Long, Jason Sudeikis, and Drew Barrymore. In 2013, he voiced the character Art in the Pixar animated film Monsters University and appeared in Guillermo del Toro's film Pacific Rim. In 2017, Day starred in Fist Fight, with Ice Cube. In it, Day plays Andy Campbell, a high school English teacher challenged by his co-worker, history teacher Ronald Strickland (Cube), to a fight after getting him fired. In 2018, he reprised his role for the Pacific Rim sequel, Pacific Rim: Uprising and had a role in Drew Pearce's film Hotel Artemis, with Jodie Foster, Sterling K Brown, Brian Tyree Henry and Jenny Slate.
Day has also been a producer for the television shows How to Be a Gentleman and Unsupervised. Day hosted the November 5, 2011 episode of Saturday Night Live (SNL) with Maroon 5 as the musical guest. He was the second cast member from It's Always Sunny in Philadelphia to host SNL (after Danny DeVito, though DeVito hosted SNL before It's Always Sunny in Philadelphia premiered). DeVito made a special appearance during Day's opening monologue. In September 2014, Day provided his voice for The Sims 4 TV spots.
He is the creator and producer of Fox comedy The Cool Kids, starring Vicki Lawrence, Martin Mull, David Alan Grier and Leslie Jordan and set in a retirement community. On August 9, 2019, Mythic Quest, a new half-hour comedy series written and produced by Day and Rob McElhenney, was announced as one of the original productions for Apple's upcoming streaming service, Apple TV+.
As a film director, Charlie is currently working on his debut on the upcoming comedy El Tonto, with Kate Beckinsale, Edie Falco and John Malkovich. Day writes, produces and stars as a silent man who becomes a celebrity and loses it all.
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