Lupita Nyong'o

Character: Self - Narrator (voice)

Tyler James Nathan

Character: Charlie Brown (voice)

Terry McGurrin

Character: Snoopy (voice)

Isabella Leo

Character: Lucy (voice)

Holly Gorski

Character: Marcie (voice)

Hattie Kragten

Character: Sally (voice)

Isis Moore

Character: Peppermint Patty (voice)

Wyatt White

Character: Linus (voice)

Christian Dal Dosso

Character: Franklin (voice)

Jacob Soley

Character: Pigpen (voice)

Matthew Mucci

Character: Schroeder (voice)

Natasha Nathan

Character: Patty (voice)

Charlie Boyle

Character: Violet (voice)

Kevin Smith

Character: Self - Filmmaker

Ira Glass

Character: Self - This American Llife

Paul Feig

Character: Self - Filmmaker

Charles M. Schulz

Character: Self - Creator of Peanuts (archive footage)

Keith L. Williams

Character: Self - Actor

Drew Barrymore

Character: Self - Actor, Producer

Miya Cech

Character: Self - Actor

Paige Braddock

Character: Self - Cartoonist / Creative Director of Creative Associates

Jean Schulz

Character: Self - Charles Schulz's Widow

Jennifer Finney Boylan

Character: Self - Writer

Billie Jean King

Character: Self - Tennis Champion / Activist

Al Roker

Character: Self - Journalist

Robb Armstrong

Character: Self - Cartoonist, Jumpstart

Chip Kidd

Character: Self - Writer / Graphic Designer

Karen Johnson

Character: Self - Former Director, Charles M. Schulz Museum

Noah Schnapp

Character: Self

Lynn Johnston

Character: Self