Booster Sinclair Munchapper (voiced by Stephen Furst) – A huge Jo-Adian and a former janitor from the agricultural planet Jo-ad (a play on the name of the Joad family, from John Steinbeck's The Grapes of Wrath). He has a big appetite and incredible strength, but is sweet and occasionally naive. Later on, he then joined Star Command to become a Space Ranger to follow in the footsteps of his idol, Buzz Lightyear. He is in awe of Buzz Lightyear and has encyclopedic knowledge of his prior adventures.