[[folder:The Christa crew]]
!'''Harlan Band'''

The Hot Shot, All-American Earthling, ''de facto'' leader of the kids. He was skilled at gymnastics and martial arts.

Played by [[Series/MightyMorphinPowerRangers Walter Jones]].

!!Associated Tropes:
* AcePilot
* BadassNormal: As the only bog-standard human among the kids, he's also the only one without any "powers", though his martial arts prowess helps make up for it.
* BelligerentSexualTension: His interactions with Catalina [[spoiler:and later Suzee]] usually come off as this.
* BullyingADragon: Loves to torment Radu, who comes from a [[SuperStrength super strong]] species that could easily turn him into paste. Fortunately for him, Radu is too much of a NiceGuy to ever actually do so.
* FantasticRacism: Against Radu, since his father was killed in the war against the Andromedans.
* HotBlooded: "Harlan Band leaps before he looks."
* HumansAreLeaders: Immediately assumes this position among his alien classmates without consulting them first, though none of them seems to object really. In the episode where he and Radu swap species (long story), Radu is the one who immediately assumes command, and again, no one really objects.
* {{Jerkass}}: Sometimes it's hard to believe the other kids even like him.
** JerkJock
** JerkWithAHeartOfGold: What he really is.
* TheLeader: In his own mind, and the other kids do usually reluctantly treat him as their unofficial leader. Sometimes he lives up to the concept.
* LeeroyJenkins: He leaves the plans to Catilina or Suze. He'd rather jump in.
* SmallNameBigEgo: "Harlan Band thinks he knows it all."
* TeamNormal: Again, the only human child on TheTeam.


An InsufferableGenius with rainbow hair from Titan, Saturn's largest moon. Has the ability to produce supersonic screams. She has a friend named Suzee, who exists in another dimension. The other crew members think she doesn't exist and think she is just an "{{imaginary friend}}," at least at first.

Played by Creator/JewelStaite.

!!Associated Tropes:
* {{Adorkable}}
* {{Cloudcuckoolander}}: "Catalina is talking to [[ImaginaryFriend the wall]]."
-->'''Catalina:''' She's [[InsistentTerminology invisible!]]
* DeadpanSnarker
* InsufferableGenius
* MakeMeWannaShout
* MulticoloredHair
* TheSmartGirl
* TeenGenius
* {{Tsundere}}: Type B, towards Harlan.
* WrenchWench


A young man from Andromeda who possesses SuperStrength (while being, in a reversion of the [[TheBigGuy associated trope]], short, slight, and not in the least bit imposing or aggressive) and super hearing. Because of their abilities, Andromedans were enslaved by an evil alien race called the Spung, the show's version of ''Franchise/StarTrek'''s Klingons. Radu faces prejudice from Harlan early in the series, due to the fact that Harlan's father was killed by Andromedans during a war.

Played by Kristian Ayre.

!!Associated Tropes:
* BewareTheNiceOnes: Generally very kind, shy, and gentle, but he ''can'' rip you apart if you get him angry enough.
* TheBigGuy
* InterspeciesRomance / StarCrossedLovers: With Elmira, though it never gets to get farther than a kiss.
* TheLancer
* MrFanservice: Sweet and shy despite his ProudWarriorRace, and with enough guilt and self-effacing tendencies to make him a massive {{woobie}}. The episode where he turns into a human is very popular.
* NiceGuy: ''Very'' nice.
-->'''[[JerkAss Harlan]]:''' Did you know that when you enter a room, the hair on the back of my neck stands up?
-->'''Radu:''' [[ComicallyMissingThePoint Yes. I hear it.]]
-->'''Harlan:''' ''That's gotta bug you right?''
-->'''Radu:''' Well, um, I'm not thrilled about it, but...
* PintSizedPowerhouse: Though he's not a midget, just shorter than you'd expect (the actor is only 5'5", to boot). WordOfGod is that the Andromedans have extremely dense molecular structures, which is why they're so strong, but also makes them short.
* StarCrossedLovers: With Elmira, which is awkward because her race used to keep his race as slaves. He also gets ShipTease moments with Suzee in season two.
* SuperSenses: His hearing, thanks to spiral-shaped ears.
* SuperStrength: "Radu's really super strong."


He hails from Uranus, and has an antenna which creates electricity and a high metabolism. Really hates it when people make jokes about his home planet. [[TheEeyore Perpetually depressed]], but in a PlayedForLaughs way.

Played by Rahi Azizi.

!!Associated Tropes:
* DeadpanSnarker: If there's a sardonic comment to make on a situation, he ''will'' be the one making it.
-->'''Harlan:''' I'm tired of running from the Spung! This time they're going to know they've been in a fight!
-->'''Bova:''' Oh, yeah, they'll be scraping us off their windshields saying, "Some fight, huh?"
* TheEeyore: "Bova acts likes nothing's funny."
* KidAppealCharacter
* LightningCanDoAnything
* OddFriendship: With Rosie. Tips over into ShipTease occasionally (like when she mistakenly assumes he's giving her a shoulder rub at one point).
* PersonalityPowers: He's cloudy and creates lightning.
* PlanetOfHats: Uranians are a pretty pessimistic bunch, both from being so far from the sun and from people making fun of their planet's name.
* ShockAndAwe

!'''Rosie Ianni'''

Cheerful young girl from Mercury who is hairless and has hot pink skin. She can create heat and always has a "sunny" attitude about everything.

Played by Paige Christina.

!!Associated Tropes:
* BaldWomen
* BewareTheNiceOnes: Even more so than Radu. She's the sweetest, nicest, cheeriest little thing you will ever meet, but she ''does'' come from a species that can scorch anything just with a touch...
* TheChick
* TheCutie
* {{Cheerful Child}}: "Rosie's cheery, bright, and sunny."
* GenkiGirl
* PlayingWithFire
* MeaningfulName: "Rosie" ties into the reddish-pink colour of roses, complimenting her pink skin.
* TheMedic: Even by way of HealItWithFire occasionally.
* MyBloodRunsHot
* NiceGirl
* OddFriendship: With Bova.
* PersonalityPowers: She's sunny and creates heat/fire.
* PinkIsFeminine: Aside from her skin, her ''fire'' is pink too.
* PlanetOfHats: All Mercurians are sunny and optimistic, with a huge smile constantly plastered on their faces. Rosie is downright placid compared to her parents.
* ThePollyanna


The resident robot and ship's avatar. She's a little screwed up, thanks to Harlan stepping on and cracking [[PersonalityChip her jewel]]. It's not clear how much of her personality was like that before the jewel cracking, though.

Played by Anik Matern.

!!Associated Tropes:
* AIIsACrapshoot: Though she's not evil, just... nuts. Very very nuts.
* {{Cloudcuckoolander}}
* FunWithAcronyms: Techno Human [=EmuLating MAchine=].
* LiteralGenie: "Android Thelma functions wrong."
* SpaceshipGirl

[[folder:The Teachers]]
!'''Theresa James "T. J." Davenport'''

The kids' teacher at the Academy, who accidentally gets stuck on board the ship after having to go search for them when they sneak out of her class onto the ''Christa''.

Played by Cary Lawrence.

!!Associated Tropes:
* BelligerentSexualTension: With Commander Goddard.
* BritishStuffiness
* TheComicallySerious
* CrouchingMoronHiddenBadass: On the very very rare occasions she avoids fainting or panicking, she can be surprisingly effective.
* {{Fainting}}: Near constantly.
* GenderBlenderName: ..."James"?
* SternTeacher
* StiffUpperLip: She... tries to project this image, but generally fails spectacularly.
* TeamMom: She tries to be this to the kids, but they usually don't buy it.

!'''Commander Seth Goddard'''

The kids' second teacher, an officer and veteran of the Spung War that was busted in rank after an incident with a space pirate.

Played by Paul Boretski.

!!Associated Tropes:
* BadassTeacher
* BelligerentSexualTension: With Miss Davenport.
* CatchPhrase: "Space hates... <x>!"
* DemotedToExtra: Suffers an accident that leaves him in a healing coma for most of the second season as part of Nickelodeon wanting to make the show YoungerAndHipper.
* MetaphorIsMyMiddleName: According to WordOfGod, his middle name ''literally'' is "Danger".
* ReasonableAuthorityFigure: He's more willing to put up with the kids' antics than Miss Davenport is, and more palatable to them in how he gets them to behave. Probably because he's essentially a rebel himself, and also treats them more like his officers than like kids.
* ReassignedToAntarctica: After the NoodleIncident with said space pirate he was busted in rank and sent to the Academy to teach.
* SkunkStripe: Two grey ones, on both temples.
* TeamDad: Succeeds at this better than Miss Davenport does at being TeamMom.

[[folder:The Spung]]

A young Spung Oracle girl who runs away from her people to escape their control over their women, and ends up meeting and helping the Christa's crew. [[AscendedExtra Was going to eventually become a main character]], [[DemotedToExtra but the network kiboshed it]] and [[ExecutiveMeddling shoved in]] Suzee instead.

Played by [[Series/StudentBodies Katie Emme [=McIninch=]]].

!!Associated Tropes:

* CuteMonsterGirl / GreenSkinnedSpaceBabe
* DefectorFromDecadence
* InterspeciesRomance / StarCrossedLovers: With Radu, eventually.
* [[spoiler:MadScientistsBeautifulDaughter]]
* MySpeciesDothProtestTooMuch
* NonMammalianMammaries: She's a lizard woman with curly hair and breasts. Don't ask too many questions.
* [[spoiler:RebelliousPrincess]]
* StarCrossedLovers: With Radu, which is awkward because her people used to keep his people as slaves.
* WaifProphet

!'''Warlord Shank'''

A Spung commander and space pirate, who first encounters the Christa while trying to retrieve the escaped Elmira, and eventually develops into one of the series' major villains.

Played by Creator/GeorgeTakei.

!!Associated Tropes:
* BigBad
* LargeHam: Not surprising, considering who plays him.
* ThirdPersonPerson

[[folder:Everyone Else]]

Catalina's "imaginary" friend, who turns out to really be an alien girl living in a different dimension. If you took all of Catalina's personality traits and set them on HIGH, you'd get Suzee.

Played by [[Series/GeneralHospital Rebecca Herbst]].

!!Associated Tropes:
* TheAce
* AstralProjection
* ImaginaryFriend
* InsufferableGenius
* ReplacementFlatCharacter: For Catalina.
* TheSmartGirl: "Suzee's smarter then a million books."
* SuspiciouslySimilarSubstitute
* TeenGenius
* WrenchWench