Characters from the cartoon SpacePOP.
The leader of the band and the princesses, Athena is smart, focused, and determined to save their parents from Geela. She plays the keyboard, and her Space Pet is the equally smart Mykie.
- The Leader: Athena is the most focused on stopping Geela and saving her parents.
- Meaningful Name: Athena is named after the Greek goddess of wisdom, fitting her role as the smartest among the cast.
- Smart People Wear Glasses: Wears futuristic lenses that are presumably meant to invoke this.
- Standardized Leader: Athena is smart, focused, and that's about it.
By far the haughtiest of the princesses, Luna grew up with everything she could want, and doesn't take being stripped of her comforts well. A spoiled, selfish diva and fashionista, Luna learns to appreciate the rest of the band. She is the lead singer, and her Space Pet is the loving Adora.
- The Fashionista: Luna mainly cares about fashion as it relates to her.
- Informed Ability: Luna is said to have an eight-octave singing voice (the limit for humans is five or six octaves), but the songs stay in one or two octaves.
- It's All About Me: Luna is a total diva and thinks the other girls are her backup band.
- Mismatched Eyes: Luna has one red eye and one golden eye.
- Spoiled Brat: Luna was rich before going on the run, and is haughty and used to the finer things in life.
- What Does She See in Him?: Her crush on Captain Hansome is questioned by a couple characters, particularly for his Stay in the Kitchen attitude, but Luna's oblivious and continues to fawn over how handsome he is.
Rhea is a sassy fashionista, and is the only princess who grew up without blood relatives, living in an orphanage before moving to the palace. She plays guitar, and her Space Pet is the ditzy Springle.
- The Fashionista: Rhea focuses on designs and the work behind fashion.
- Light 'em Up: Springle can project light from her hands.
- Lost Orphaned Royalty: Rhea doesn't have parents and grew up in an orphanage before they learned she was a princess, moving into the palace shortly after.
- The Snark Knight: Being a sassy wise-cracker is Rhea's main character trait.
A rough-and-tumble fighter who sometimes acts before thinking, Juno is determined to take the fight to Geela now, and knows the most about fighting and survival. She plays the drums, and her Space Pet is the timid Skitter.
- All There in the Manual: The website says she has a boyfriend, but he's yet to be seen in the books or the show.
- Just a Stupid Accent: Juno has a thick British accent for no real reason.
- Leeroy Jenkins: Juno is always gung-ho about fighting Geela and often has to be talked down from unwinnable situations.
- Make My Monster Grow: Skitter can grow 50 times her size.
- Throwing the Fight: Juno forces herself to lose a reality show since it wasn't in her contract that she'd win, and if she did win Geela would take notice.
A sweet, naive girl who loves all animals, Hera loves her fellow princesses and sees their quest as an adventure, though she's not always aware of how dangerous it can be. She plays bass, and her Space Pet is the fierce Roxie.
- Cloud Cuckoolander: Hera generally has... odd ideas when thinking of ways for plans to work.
- The Ditz: She tends to take things literally and is usually the last person to pick up on things, having to have them explained.
- Friend to All Living Things: Hera loves all animals, even giant space slugs. The animals all love her in return, and are very affectionate to her.
- Granola Girl: Hera believes in peace, love, and marshmallow dreams, and is fond of daydreaming and meditation.
The main villain of the series, Empress Geela took over the planets of the Pentangle, imprisoned their kings and queens, and rules with a clawed fist. She hates SpacePOP and everything about them, using her android army to hunt them down.
- Adaptational Attractiveness: Geela is more attractive in official art and tie-in book art than she is in the show.
- All There in the Manual: The website mentions Geela isn't really an empress but declared herself one out of jealousy that she couldn't be a princess, and she hails from the planet Geelatuu.
- Bald Women: Geela has a wig collection to hide the fact that she's bald.
- Big Bad: Empress Geela, who took over the Planetary Pentangle and imprisoned the girls' parents.
- Card-Carrying Villain: Geela is proud of her evilness and hates anything good.
- Do Not Adjust Your Set: Geela takes over the holonet feeds, saturating it with programs all about her.
- Hollywood Tone-Deaf: Geela cannot carry a tune at all. Her singing's so bad Tibbitt uses it as a torture device.
- Laughably Evil: Geela is a cruel dictator who took over the princesses' planets and kidnapped their parents, but she spends most of her time on vapid, self-promoting TV shows and reveling in her own evilness.
- Offscreen Villainy: Villainous things Geela does are usually offscreen, with most of her time being spent on self-promoting TV shows or reveling in her own evilness.
Geela's pet dragon and a gift from her late father, Tibbitt acts as her helper and occasional sounding board for her evil schemes.
- Cool and Unusual Punishment: Tibbitt tortures the girls' parents with audio of Geela's awful singing.
- Team Pet: He's Geela's pet dragon.
The Mecha-Mooks and backbone of Geela's army, these androids are numerous but not too bright.
- Cloud Cuckoo Lander: Geela's robots are hilariously wrong about a ton of things, like suspecting SpacePOP sneaked into Space Port 9 by way of pouring invisible juice on themselves.
A space pirate and bounty hunter. Geela hires Khang to find the missing jewel on the Ring of Grock and to recover the ring from SpacePOP.
- HeelFace Turn: Khang quits working for Geela to join the Resistance.
- Honey Trap: Khang poses as a normal boy so Athena will trust him. She doesn't take it well when he reveals his true colors.
- Only in It for the Money: He's only in it for Geela's money.
- Spanner in the Works: After Geela double-crosses him, he recovers the Ring of Grock and delivers it to SpacePOP, something that wouldn't have been possible without his intervention.
- Top-Heavy Guy: Khang's upper half is about twice as wide as his lower half.
- Wouldn't Hit a Girl: Geela tells him to vaporize SpacePOP, but he doesn't because they're too pretty.
The Felian butler of Athenia, Chamberlin has served the Athenian royal family for decades. He was tasked with rescuing the princesses and leading them to safety, but finds himself an unwilling band manager and resistance member. He's terrified of absolutely everything, especially doughnuts with sprinkles.
- Cowardly Lion: He's terrified of everything the band does, but is willing to help if need be and even saves the day in SpacePOP's first mission.
- Really 700 Years Old: Chamberlin is 127 years old but looks middle-aged.
SpacePOP's biggest fan, Bradbury is both a help and a hindrance to the band. He manages their website, fan blog, and got them on the map, but his pestering for questions and crush on Luna can make him quite the pest at times.
- Adaptational Attractiveness: The book illustrations give him a more Ugly Cute design.
- Geek Physiques: He wears stereotypical nerd glasses and pocket protectors, and is a fan to the point of annoyance.
- Hopeless Suitor: He has a crush on Luna, and in the books Juno and Hera as well, but none of them can stand him.
- Shout-Out: He's possibly named after Ray Bradbury.
The captain of the Resistance, Captain Hansome is as handsome as his name implies, though his social skills and views on gender roles are a trifle old fashioned. Luna has a very obvious crush on him.
- Oblivious to Love: He seems oblivious to Luna's crush on him.
- Meaningful Name: His name is a play on the word 'handsome'.
- Stay in the Kitchen: Captain Hansome's first few missions have him asking the girls to spy on things and report back, which they disobey and end up destroying Geela's weapons. He also attempts to break in and rescue them during another mission, only for them to rescue him and demand he treat them with respect from then on.
SpacePOP's roadie, Rand helps with the heavy lifting. He tends to be very out-there, and has an unrequited crush on Geela.
- Cloud Cuckoo Lander: Rand is fond of non-sequiturs and random humor in general.
The royal families of Athenia, Junoia, Rhealo, Heralda, and Lunaria. Geela kidnaps them at the start of the series, and finding them is the band's goal.
- Chuck Cunningham Syndrome: Athena's mother is only seen in one dungeon scene, and isn't seen with her husband or the rest of the girls' parents before or after it.
- Generation Xerox: Most of the girls' parents share their hair and skin colors.
- Living MacGuffin: Rescuing them is the goal of the series.
- Strong Family Resemblance: Athena's mother, Luna's mother and Hera's mother look almost exactly like their daughters.