Biography
Charles Peckham Day (born February 9, 1976) is an American actor, writer, and producer. He is best known for playing Charlie Kelly on the FX dark comedy It's Always Sunny in Philadelphia (2005–present), which he stars with Rob McElhenney, Kaitlin Olson, Glenn Howerton and Danny DeVito, and he is also a writer and an executive producer. In 2011, he was nominated for a Critics' Choice Television Award and a Satellite Award for the role. He subsequently co-created the Fox sitcom The Cool Kids (2018–2019) with Paul Fruchbom and the Apple TV+ comedy Mythic Quest (2020–2025) with McElhenney and Megan Ganz.
In film, Day is best known for his performances as biologist Dr Newton Geiszler in Guillermo del Toro's science-fiction monster movie Pacific Rim (2013) and its sequel Pacific Rim Uprising (2018), Dale Arbus in the comedy Horrible Bosses (2011) and sequel Horrible Bosses 2 (2014), and teacher Andy Campbell in the comedy Fist Fight (2017). He is also known for his voice roles in Monsters University (2013), The Lego Movie film franchise (2014–2019) and the Nintendo franchise character Luigi in The Super Mario Bros. Movie (2023). He made his directorial debut with Fool's Paradise in 2023.
Description above from the Wikipedia article Charlie Day, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Cast Credits

The Super Mario Galaxy Movie
Character: Luigi (voice)
MOVIE • 2026

Honey Don't!
Character: Marty Metakawitch
MOVIE • 2025

Summer of 69
Character: Rick Richards
MOVIE • 2025

Hot Ones Versus
Character: Self
TV • 2024

The Saint of Second Chances
Character: Mike Veeck
MOVIE • 2023

Fool's Paradise
Character: Latte Pronto
MOVIE • 2023

Bupkis
Character: Glen Rossi
TV • 2023

The Super Mario Bros. Movie
Character: Luigi (voice)
MOVIE • 2023

Welcome to Wrexham
Character: Self
TV • 2022

I Want You Back
Character: Peter
MOVIE • 2022

Abbott Elementary
Character: Charlie
TV • 2021

How It Ends
Character: Lonny
MOVIE • 2021

Snacked
Character: Self
TV • 2021

Mythic Quest
Character: Spencer
TV • 2020

The Kelly Clarkson Show
Character: Self
TV • 2019

The Lego Movie 2: The Second Part
Character: Benny (voice)
MOVIE • 2019

Emmet's Holiday Party: A LEGO Movie Short
Character: Benny (voice)
MOVIE • 2018

The Cool Kids
Character: Chet the Handyman
TV • 2018

Hotel Artemis
Character: Acapulco
MOVIE • 2018

Pacific Rim: Uprising
Character: Dr. Newton Geiszler
MOVIE • 2018
Crew
Crew Credits

Side Quest
Role: Executive Producer
TV • 2025

Side Quest
Role: Original Series Creator
TV • 2025

For the Safety of Theo
Role: Executive Producer
MOVIE • 2023

Fool's Paradise
Role: Director
MOVIE • 2023

Fool's Paradise
Role: Writer
MOVIE • 2023

I Want You Back
Role: Executive Producer
MOVIE • 2022

Mythic Quest
Role: Writer
TV • 2020

Mythic Quest
Role: Executive Producer
TV • 2020

Mythic Quest
Role: Creator
TV • 2020

The Cool Kids
Role: Executive Producer
TV • 2018

The Cool Kids
Role: Writer
TV • 2018

The Cool Kids
Role: Creator
TV • 2018

Fist Fight
Role: Executive Producer
MOVIE • 2017

Unsupervised
Role: Producer
TV • 2012

A Very Sunny Christmas
Role: Executive Producer
MOVIE • 2009

A Very Sunny Christmas
Role: Writer
MOVIE • 2009

The Nightman Cometh: Live
Role: Writer
MOVIE • 2009

Boldly Going Nowhere
Role: Writer
TV • 2008

Boldly Going Nowhere
Role: Producer
TV • 2008

It's Always Sunny in Philadelphia
Role: Writer
TV • 2005