Charlie Brown is the main character from the Charles Schulz comic strip, Peanuts. His catchphrases include "Rats!", "AUUUGGHHH!", "I can't stand it!", and "Good grief!" He has a crush on Emma the Little Red-Haired Girl. Some characters in the adventures shows just call him 'Charlie', Barney especially.
- Charlie Brown will meet Garfield and his pals in Garfield Meets the Equestria Girls 2: Rainbow Rocks along with Snoopy and Woodstock, and is the love interest of Selina, even though he has a secret crush on Emma the Little Red-Haired Girl.
- In Barney Goes to Zootopia, he will turn into a mouse.
- Winnie the Pooh/Peanuts crossovers:
- Pooh's Adventures of It's the Great Pumpkin, Charlie Brown (first appearance)
- Pooh's Adventures of Mad Monster Party
- Pooh's Adventures of Oliver & Company
- Littlefoot Says Hocus Pocus (first appearance)
- Land Before Time/Scooby-Doo crossovers:
- Ash's Adventures of A Charlie Brown Christmas (first appearance)