Gilbert

Gilbert is a very fast kindergartener (both in speed and speech). Gilbert is King Bob's pick to win the Kindergarten Derby in the episode "Kindergarten Derby." He loses the derby to Tubby.

Voice: Evil Genius/David/Zack

Father: Unknown father

Mother: Unknown father

Friends: Captain Sticky, Hector, Tubby, Cindy, Emma, Spencer, Zedd, the Brittanys, Big Kids (especially TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Menlo, Miss Finster, Principal Prickly, Miss Grotke, the Ashleys, Scribe Kid, Jordan and Jerome, King Bob and other good Third Street School students) (sometimes), Miss Finster, Principal Prickly, Miss Grotke and Mrs Klemperer

Enemies: Big Kids (especially TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Menlo, Miss Finster, Principal Prickly, Miss Grotke, the Ashleys, Scribe Kid, Jordan and Jerome, King Bob and other good Third Street School students) (sometimes), Earwin Lawson, Conrad Mundy, Greg Skeens, Chucko Kowalski, Jocko, Buster, Cheay, Koreo and Kurst the Worst

Likes: Going fast, winning races and chasing after Big Kids

Dislikes: Being outrun and escaped by Big Kids, troublemakers causing trouble (mainly Lawson) and being framed by troublemakers