Codename: Kids Next Door

Ben Diskin

Numbuh 1 / Numbuh 2 (voice) · 139 eps

Lauren Tom

Numbuh 3 (voice) · 139 eps

Dee Bradley Baker

Numbuh 4 (voice) · 139 eps

Cree Summer

Numbuh 5 (voice) · 139 eps

Tom Kenny

Teen / Jock / Guard (voice) / Twin Boy / Vicious Dog (voice) / Narrator (voice) / Mr. Wink (voice) / Mr. Jelly / Knightbrace (voice) / Numbuh 30c (voice) / Goof (voice) / Counselor / Campers (voice) / Chester (voice) / Numbuh 42 / Numbuh Ezekiel (voice) / The Common Cold / Flu Bug (voice) / Fake Delightful Child from Down the Lane (voice) / Hoagie Gilligan IV (voice) / Knightbrace (voice) / Chester / President / Robber #1 (voice) / Numbuh 30C (voice) / Numbuh 16 / Numbuh 67 / Numbuh 68 (voice) / Kenny (voice) · 26 eps

Jennifer Hale

Mrs. Thompson / Robber #3 (voice) / Secretary / Assistant (voice) / Dixie / Runt (voice) / Mrs. Beetles (voice) / Mrs. Uno / Major Mrs. Manners (voice) / Computer / Rupert's Mom / Reporter (voice) / Numbuh 86 / Nurse Claiborne / Rainbow Monkey Chorus (voice) / Girls (voice) / Numbuh 202 (voice) / Computer / Nerd (voice) / Mrs. Uno (voice) / Stacey (voice) / Computer (voice) / Mrs. Thompson (voice) / (voice) · 25 eps

Daran Norris

Ed / Guard #1 / Lead Mustache (voice) / Mr. Physically Fitastic / The Human Text (voice) / Announcer / Assistant / Homeworko (voice) / Count Spankulot / Gooey / Ice Cream Man #2 (voice) / RAMON-4 (voice) / Maitre'd / Violinist (voice) / Count Spankulot / Joe Balooka / Spankenstine Monster (voice) / Guards / DJ (voice) / Joe Balooka (voice) / Monty Uno / Count Spankulot / Sargent Sensible (voice) / (voice) / Gooey (voice) · 20 eps

Jeff Bennett

Dr. Teef (voice) / Mr. Boss (voice) / Numbuh Jebediah (voice) / Destructo Dad / Mr. Boss / Mr. Fizz (voice) / Sydney Beetles (voice) / Destructo Dad (voice) / Hoagie Gilligan Sr. (voice) / Sydney Beetles / Mr. Boss / Technicians (voice) · 16 eps

Candi Milo

Grandma Lydia (voice) / Edna Jucation (voice) / Salmonella Fitzgerald (voice) / Leona (voice) / Henrietta Von Marzipan (voice) / Betty Gilligan (voice) / Betty Gilligan / Grandma Lydia (voice) / Leaky Leona / Mrs. Goodwall (voice) / Nurse Jumbo (voice) / Madame Margaret (voice) / Lasso Lass (voice) · 14 eps

Jason Harris

Chad Dickson (voice) / Commander (voice) / Numbuh 274 (voice) / (voice) / Marty / Jock (voice) · 10 eps

Frank Welker

Truck Driver (voice) / Professor XXXL / Chimpy (voice) / Professor XXXL / Defense Array (voice) / Bus Driver (voice) / Rainbow Monkey Kong (voice) · 9 eps

Tara Strong

Girls (voice) / Girl (voice) / Sally Sanban (voice) / Mushi Sanban (voice) / Rainbow Monkey Tribesgirl #3 (voice) / Pauley Marcus (voice) / Mushi Sanban / Stewie (voice) / Mushi Sanban / Numbuh 93 (voice) · 8 eps

Grey DeLisle

Lizzie / Woman (voice) / Laura Limpin / Additional Voices (voice) / Crazy Old Cat Lady / Mega Mom (voice) / Grace / Lizzie Devine (voice) / Lizzie Devine / Laura Limpin (voice) / Mega Mom / Numbuh 69 (voice) / Gramma Stuffum (voice) / Julie / Cheerleader (voice) · 8 eps

Maurice LaMarche

Father (voice) · 7 eps

Mark Hamill

Stickybeard / Sumo Wrestler / Pirate (voice) / Stickybeard (voice) · 6 eps

Kevin Michael Richardson

Dr. Lincoln (voice) / Ice Cream Man / Ice Cream Beast (voice) · 6 eps

James Arnold Taylor

King Sandy / Knight #2 / Guard #1 (voice) / Eggbert Eggleston (voice) · 6 eps

Rachael MacFarlane

Numbuh 362 (voice) / Girls (voice) / (voice) · 6 eps

Dave Wittenberg

Nick (voice) / Ernest "Ernie" / Nick (voice) / Numbuh 74.239 (voice) / Wintergreen (voice) · 6 eps

Rob Paulsen

Robin Food (voice) / Mr. Mogul / Monkey (voice) / (voice) / Mr. Washer / Chili Dog Vendor (voice) / Rupert Puttkin / The Great Puttinski (voice) · 5 eps