Catbug explores all the colors of his world in space, including his red rocketship, the orange sun, and the purple spaceman. It’s a brightly colored universe for Catbug and his friends to enjoy. Learn the colors with Catbug! Catbug is the popular character from Frederator Network's Bravest Warriors YouTube hit series, created by Adventure Times's Pendleton Ward, based on characters created by Breehn Burns. Catbug is voiced by Sam Lavagnino.

Most issues include separately paged sections: Physical theatre, extra profits; Review; Servisection.

Four teenage travelers traverse the universe saving those in need...though not always in the way you’d expect...in fact...never! Along the way they meet aliens, phantoms and other interdimensionals—including everyone’s favorite, Catbug. Sometimes...they even meet themselves! In Catbug's Treasure Book we see the world from his perspective. A kind of scrapbook, the pages are filled with memories and souvenirs of his adventures with the Bravest Warriors, along with his playtime imaginings. There are also allusions to past episodes (Danny's eyebrows taped to a page, for example), and hints at secrets not yet revealed.