The following is a list of all the characters in Atomic Betty, and who they are voiced by.
Main cast[]
- Tajja Isen as Atomic Betty
- Rick Miller as Sparky
- Bruce Hunter as X-5
- Colin Fox as Maximus IQ
- Len Carlson as Minimus (seasons 1-2)
- Adrian Truss as Admiral DeGill
- Dwayne Hill as Minimus (season 3) and Atomic Roger
- Kristina Nicoll as Mom
- Patrick McKenna as Dad
- Laurie Elliott as Noah
- Catherine Disher as Penelope
Guest stars[]
Season 1[]
- Michael D'Ascenzo as Chip Osbourne and Dalton
- Colin Fox as Kal and Dorf
- Cliff Saunders as Chameleon
- Emily Hampshire as Megan
- Kristina Nicoll as Chef Bernadette, Iciclia, Computer, Spa Worker, Celebrian and Max-Land Patron
- Len Carlson as Spindly Tam Kanushu, Termi-Nanny, Keto, Biker Guy, B-1, Snotalus, Scynthian President, Ghost Captain, Pharaoh, Greenbeard, Old Elvin Lady, Loofu, Santa Claus and Movie Announcer
- Dwayne Hill as Antoine Lucci, Principal Peterson, Dylan, General Zag, Atomic Dodger, Salon Owner, Radio DJ, Gravnor, King R-Turmex, Dr. Cerebral and Alien Kid
- Jonathan Wilson as Infantor and Game Narrator
- Julie Lemieux as Nurse, Nuclea and Computer
- Jamie Watson as Captain Chuck, Dragno and X-8.5
- Kathleen Laskey as Gym Teacher, Librarian and Zulia
- Juan Chioran as El Gato
- Martha MacIssac as Empress Narcissistad
- Stephanie Morgenstern as Fadopyah, Megan and Teacher
- Adrian Truss as Flavia, Penelope's Dad, Veterinarian, Plug and Baloopaloop
- Catherine Disher as Sarah, Receptionist, Alien Fangirl and Max-Land Patron
- Peter Oldring as Duncan
- Ron Pardo as Hopper the Chopper, M'Lord Orus, Octopus, Uncle Charlie, Vraxy and Mylord Orus
- Cole Caplan as Uriliam Kid, Kyle and Baby Spider
- James Rankin as Dingleberry
- Carolyn Hay as Pontifidora the Conquistadora
- Robin Duke as Mrs. Dourly
- Rick Miller as Reporter
- Cal Dodd as Enormo
- Neil Crone as Coach Sorenson
- Robert Smith as Slirps
- Ron Rubin as Sprog
- Nicky Gaudagni as Masticula and Max-Land Patron
- Gary Krawford as Solovem
- Jayne Eastwood as Grandma
- Sugar Lyn Beard as Junior Galactic Guardians
- Don Francks as Maximus Sr.
- Bruce Hunter as Photographer
Season 2[]
- Peter Oldring as Duncan
- Ron Pardo as Hopper the Chopper, Vraxy, Mylord Orus and Nash
- Robin Duke as Mrs. Dourly and Mama Mulock
- Neil Crone as Coach Sorenson
- Stephanie Morgenstern as Megan, Fadopyah, Lily-Rose, Girl One, Starbecca and Princess
- Dwayne Hill as Dylan, Principal Peterson, Dr. Cerebral, Commander Bee, Mulock, Wry-Bot, Atomic Dodger, Bubba and Furball
- Julie Lemieux as Nuclea
- Alexandra Lai as Paloma
- Jayne Eastwood as Grandma
- Debra McGrath as Auntie Matter
- Len Carlson as Pharaoh, Snotalus, Greenbeard, Spindly Tam Kanushu, B-1, Movie Narrator, Santa, Termi-Nanny, Old Elvin Lady, Alien Construction Worker and TV Reporter
- Catherine Disher as Baby's Mom and Queen Penelobee
- Kathleen Laskey as Zulia
- Liam Titcomb as Plutor
- Michael D'Ascenzo as Chip Osbourne and Dalton
- Jamie Watson as Switchmo, Captain Chuck and Demon
- Kristina Nicoll as Iciclia, K.C. Growling and Chef Bernadette
- James Rankin as Dingleberry and Milton/The Scribe
- William Shatner as Jimmy
- Scott Thompson as Jinx
- Tajja Isen as Robo-Betty
- Cliff Saunders as Chameleon
- Nissae Isen as Juanita and Tiny Alien
- Cole Caplan as Keener and Kyle
- Stacey DePass as Bombshelle
- Don Francks as Maximus Sr.
- Patrick McKenna as The Collector
- Carolyn Hay as Pontifidora the Conquistadora
- Jonathan Wilson as Infantor and Kid
- Robert Smith as Mr. Parker
- Peter Keleghan as Sgoth
- Keith Knight as The Voice Bandit
- Tony Daniels as Boltar
- Joyce Gordon as Crone
- Katie Griffin as Kareena
- Nahid Islam as Pandora
- Lubomyra Kowalchyk as X3
- Natasha Fatah as Alien Priestess
Season 3[]
- Alexandra Lai as Paloma
- Jamie Watson as Captain Chuck and B-1
- Cliff Saunders as Chameleon
- Scott McCord as Chaz Lang and Cosmic Shop Guy
- Carolyn Hay as Pontifidora the Conquistadora
- Leah Renee Cudmore as Regina Peterson and Delta Aurora
- Stephanie Morgenstern as Megan
- Melanie Tonello as Sarah
- Jonathan Wilson as Brother
- Catherine Disher as Mother, Grandma June, Mrs. Lang, Alien, Rude Ribbon Head and Queen Penelobee
- Ron Pardo as Uncle Charlie, Greenbeard and Hopper the Chopper
- Adrian Truss as Mr. Lang, Carnival Barker, Zlymon, King #1 and Zet Leader
- Bruce Hunter as King Artumis, Curator and Volunteer Coordinator, Pirate, Alien Host, King #2 and Designer
- Dwayne Hill as Dr. Cerebal, Spindly Tam Kanushu, Antoine Lucci, Principal Peterson, Koorva Leader, Mr. Parker, Quentin Terretikibutt, Malvoid, Mulock, Old Elvin Lady, Wry-Bot, Psychonian Leader and General Bee
- Tajja Isen as Robo-Betty
- Stacey DePass as Bombshelle and Zora Shmoot
- Kathleen Laskey as Zulia
- Jayne Eastwood as Grandma
- Gary Krawford as Jimmy
- Don Francks as Max Sr. and Max Sr. Sr.
- Tony Daniels as Pharoah and Mr. Snugglekins
- Cal Dodd as Enormo
- Julie Lemieux as Barker, Shaka Booga, Old Lady and Morganna
- Patrick McKenna as Dr. Will and The Collector
- Juan Chioran as Purrsy and Ultimo
- Peter Oldring as Flunkie and Duncan
- Jonathan Wilson as Infantor and Infantor's Brother
- Liam Titcomb as Plutor
- Terry McGurrin as Zip Shmoot
- Kristina Nicoll as Iciclia
- James Rankin as Dingleberry and Milton/The Scribe
- Cole Caplan as Bill DeGill and Prince Studly
- Megan Fahlenbock as Sam
- Robin Duke as Mrs. Dourly
- Rebecca Brenner as Empress Narcissistad
- Rick Miller as DJ
- Neil Crone as Coach Sorenson