List of characters of Atomic Betty

Elizabeth "Betty" Barrett/Atomic Betty is the protagonist and titular character of the show, and is herself a very unusual 12-year-old girl in the sense that she is also a Galactic Guardian in the known Universe. She is awkward yet unique both in her qualities and in her social position, due to her disappearances. She is from Moose Jaw Heights (a fictional borough of Moose Jaw, Saskatchewan) and has eclectic interests, from skateboarding to writing her own songs, and also, learning to play both the guitar and keyboards. Betty has absent-minded parents, and a secret life as a Galactic Guardian, an enforcer of law and order across the galaxy. In school, she is unusually intelligent, unusually thoughtful, quirky, and a little bit of a nerd, but in outer space she is professional and always focused, though she is unusually confident of winning. In terms of her social identity, Betty has very tomboyish characteristics, because she always fights villans rather than do what girls normally do. Betty is one of the best at what she does, and commands considerable respect. While she seems to be famous throughout the galaxy, her home planet (Earth) is a closely guarded secret from all but a few within the galaxy's power structure. Betty wears a bracelet that allows Admiral DeGill to contact her at any time (it may also be the item she uses to transform as well) and is known to be a serious carnivore. Betty has a crush on Dylan.

Betty's Father, Mr. Barrett, is a slightly absent-minded salesman, but he is a devoted father when he's around.

Betty's Mother, Mrs. Barrett, is a stereotypical hairdresser, with a poufed blonde ponytail and tacky animal-print clothes. Where her father is absent-minded, her mother is simply oblivious, often paying excessive attention to her spoiled cat Purrsy, to whom she is devoted.

Betty's Granny, Beatrixo, is a lively older woman with a love of clog dancing and numerous other talents. She is a retired Galactic Guardian, a fact that Betty discovered when she found a signal bracelet identical to her own in her granny's attic. It is unknown whether Betty's father is in on the secret. Beatrixo found Jimmy on the episode 'No-L 9'.

Betty's Grandpa, Jimmy, was lost while trying to discover sounds on a distant planet, but was found on The No-L 9, a collection of singing planets in "Atomic Betty: The No-L 9" (christmas special). Jimmy is a scientist on the musictality of space rocks. In his sole appearance on the show Jimmy's voice was provided by William Shatner.

Sir Purrsifus, or Purrsy for short, is Betty's mother's spoiled, surly cat. Purrsy has accidentally accompanied Betty on one of her missions, but being a cat has not said anything about it. He tends to cause trouble, but the trouble often backfires on him.

Noah Parker is Betty's best friend. Although Noah thinks of Betty as being somewhat flaky, he is secretly in love with her, yet is unable to express his feelings. He is unaware of Betty being a Galactic Guardian, and often thinks that Betty being frequently missing is due to coincidence.

Dylan is the school heartthrob, as he is both attractive and athletic. He is the dream guy of every girl in school, but he is attracted to Betty because of her intelligence and interest in science.

Penelope Lang is Betty's rival, who thinks of herself as the most popular prima donna at her school. This Chinese girl often uses her popularity or wealth to undermine Betty's social standing, a plan that inevitably backfires. She is a filthy rich-and-spoiled rotten brat, and bears a close resemblance to Claire Brewster from the animated series Beetlejuice.

Paloma is introduced in the second season as a new transfer student who Betty quickly befriends. However, this Latino girl hides a secret that is only revealed at the end of the second season.

Duncan Paine is Moose Jaw Heights Junior High's resident school bully, and likes Penelope. Duncan Paine bosses people around, like Penelope, though he is not really that descriptive on any show, but Bracelet Yourself.

Mr. Peterson is Betty's school principal. Tough but fair, he takes his interest in hockey to the point of obsession. His voice and style of dress are patterned after veteran Canadian hockey commentator Don Cherry.

Admiral DeGill is a goldfish with a crew cut who is Commander in Chief of Galactic Guardian and Planet Protecors Batallion 147. He is Betty's commanding officer, who dispatches Betty on her various missions.

Sparky is the slightly hyperactive alien pilot of Atomic Betty's ship with an immense appetite (and a talent for using his four cow-like stomachs for storage). While a bit ditzy and accident-prone, he forms one third of a very reliable team.

Robot X-5 is the third member of Betty's crew. Although an antiquated robot by Galactic standards, X-5 remains walking database on everything important to a Galactic Guardian. He and Sparky have a contentious but occasionally respectful working relationship.

Spindly Tam Kanushu was apparently Betty's martial arts trainer. He is an elderly alien martial arts expert.

Atomic Roger is another Galactic Guardian, apparently human, although clearly not from Earth, who is Betty's colleague and occasional rival. He is the twin brother to the villain Atomic Dodger.

Commandant McSlim is another commanding officer of Betty. He is the director for the Galactic Guardians Training Corps.

Maximus I.Q. is a bumbling supervillain, catlike in appearance and somewhat regal (or at least believes himself so) in bearing. Though bumbling, he represents enough of a danger that he is Betty's most frequent nemesis. He is obsessed with defeating Betty and discovering her home planet, and has come very close on several occasions (including once building a temporary base near Jupiter). Despite not knowing her origins, Maximus has created clones of Betty from hair samples taken in combat. Maximus' father is also a criminal, though more of a robber and thug than a supervillain.

Minimus P.U., P.U. for "portable underling", is Maximus' hapless, monkey-like, literally two-faced sidekick -- one face is reluctantly sycophantic, while the other is sarcastic and bitter at Maximus' constant disrespect.

Iciclia is a character reminiscent of the Witch Queen from Disney's 1937 animated film version of Snow White and the Seven Dwarfs; her trademark attacks are ice-based. She was once dependent on montegoberries to keep her youth and beauty, but she seems to have eliminated this dependency somehow.

Infantor is a foul-tempered infant (or perhaps an adult or adolescent trapped in an infant's body) who enjoys playing games with his enemies. He once sucked Betty and her crew into a portal leading them to a virtual reality game to fight for their lives according to his rules.

Nuclea is an energy-based being whose power (and size) increase as she consumes more energy. She continually uses new methods to secure large sources of energy to absorb.

The Chameleon is an alien that can change form into any person, animal or object. He was once Maximus's most trusted spy until being fired after an unexplained mishap. Since then, his efforts at evil have been intended to win back Maximus's favour.

Dr. Cerebral is a brain that wanted to control the universe. One time, he inserted a virus to every robot to the universe, and almost killed B-1 and X-5.