Brian Johnson
The father of the "family". One of the aliens from the planet Valux whose own fault was it that they crash landed on Earth. Despite taking the role of the father of the family, he is quite selfish, self-centered and child like. He can cause chaos for the Barker kids, but has a caring side to him underneath it all. Despite being the man of his and Sophie's relationship, he is quite feminine and likes knitting.
- Ambiguously Gay: He shows examples of this; falls in love with Trent, Scott Taylor and Trent.
- Genius Ditz: Despite his silly nature, he's a brilliant scientist.
- Jerk with a Heart of Gold: While he does have a tendency to be selfish and childish, he's a good man at heart.
Sophie Johnson
The mother of the family. She is the wisest of her and Brian, although that's not saying much. And much like Brian, she can self centered and arrogant. But even though she does show her heart of gold, she can go a little too far and make the kids' lives harder than it is.
- Jerk with a Heart of Gold: She's overall a caring person despite her faults such as her selifishness and arrogance.
Josh Barker
The middle son. He is a troublemaker by scamming people at school into buying dodgy items he's made. He would often get Brian and Sophie to morph into either himself or other people to solve his problems, even though they make things worse.
- Jerk with a Heart of Gold: While perhaps the least obviously so of the family, he does show he cares from time to time.
Lucy Barker
The youngest and smartest of the trio. She loves mathematics, chemistry and astronomy. Her dream is to be an astronaut. She is usually the voice of reason to Brian and Sophie, when they get into trouble.
- Nice Girl: Definitely the kindest member of the family
- The Smart Guy: Her geeky tendencies and good brain are often a big part of the episodes.
C.J.
The fourth child that the family adopt, after Brian knocked him over in "SuperBrian". He becomes Brian's partner in crime and gets involves in his schemes.
- Gasshole: In the episode "Meet and Two Veg", he and Josh have a fart contest. So C.J. eats a really big Brussels Sprout and his stomach is inflated like a balloon and deflates when he lets rip.
- Jerkass Ball: In the episode "Wrongs and Praises", he looks forward to his foster sisters getting hit by a hard book.
- Nice Guy: Despite being treated roughly by Brian, he doesn't seem to mind.
Trent
Mel's friend, and eventually boyfriend.- Nice Guy: Much more laid back and helpful than Mel.
Frankie
One of Josh's friends at school, who has a crush on Mel. He is very dramatic and stops at nothing to confess his love for her.
- Dumb Is Good: While hardly the smartest guy in the show, he is quite a nice, friendly guy.
Pete
Another of Josh's friends. He is grumpy, but essentially goodnatured.- Ambiguously Bi: In a late episode, thanks to Sophie's interference, Pete thinks Josh has a crush on him. He appears to be flattered, and even contemplating a relationship with Josh.
- Nice Guy: Although he's grumpy, he is mostly reasonable and kind, unless someone gives him a reason not to be.
Mikey
A friend of Josh, Frankie and Pete's in the first series. Less developed than them, but seems like a nice enough guy.
- Flat Character: Not a lot of him is seen.
- Nice Guy: He seems to be a good enough friend to his friends.
Dave
Another first series character, a guy who Josh sometimes idolizes, and sometimes dislikes.
- Small Name, Big Ego: While he is reasonably handsome and popular, it is hard to see why he's quite so popular, with his arrogant attitude.
Tania Thomas
A girl at school whom Josh fancies and tries multiple times to go out with her. They don't go too well.
- Lovable Alpha Bitch: She is a bit shallow and conceited, but not a bad person.
