Charles Peckham Day is an American actor, writer, producer and podcaster. He is best known for playing Charlie Kelly on the FX comedy It's Always Sunny in Philadelphia (2005–present), which he co-created with Rob McElhenney and Glenn Howerton, and on which he is also executive producer and writer. In 2011, he was nominated for a Critics' Choice Television Award and a Satellite Award for the role. He subsequently co-created The Cool Kids (2018–2019) on Fox with Paul Fruchbom in 2018 and Mythic Quest (2020–present) on Apple TV+ with Rob McElhenney and Megan Ganz in 2020, and continues to executive-produce the latter.