A prominent culture who mysteriously look exactly like Earth-humans. Their reputation does not make this comfortable for Earth-humans, though.
- Bizarre Human Biology: Stronger, faster and more durable than humans, with one hell of a Weak Sauce Weakness.
- Human Aliens: Almost indistinguishable from humans as far as surface appearances go.
- Weaksauce Weakness: Sebaceans have a very poor tolerance for heat, and suffer brain damage and death at temperatures that would be simply uncomfortable for most species.
A Sebacean group who broke away from the Peacekeepers to lead a less militaristic and more libertarian lifestyle.
- Defector To Decadence: Broke away from the Peacekeepers almost two thousand cycles ago, and have never looked back. As Rygel noticed, they seem to enjoy their freedom a bit too much.
- The Empress: Empress Novia — manipulative and stubborn, but strictly neutral.
- Matriarchy: Of the Original variant. While it's clear that the Regent has power, the Empress is clearly the one in charge. Downplayed, as its clear that succession law does allow male Emperor. Fridge Brilliance kicks in when one remembers that their children are Designer Babies created on a test tube from their parents genetic material, and the embryos are implanted even before the wedding. They can make sure the firstborn and heir is always a female.
- Standard Royal Court: Not quite to the extent of Deadly Decadent Court, but the influence of Prince Clavor and the Scarran ambassador certainly brought it close.
- Taken for Granite: Immediately after marriage, the future Empress and her Regent are petrified for the next eighty cycles, allowing the current Royal Couple to finish off their reign peacefully while their still-conscious successors absorb all the royal court procedures going on about them. Thanks to the calming influence of psychic communication, this would seem to work quite well.
- Nerves of Steel: She doesn't show any pain when being Taken for Granite, while Crichton found it incredibly painful.
- Though the process is calibrated for Sebacaeans and not humans, which might have been the cause Crichton's pain.
- Stepford Smiler: She pretends to be compliant with her mother's manipulations, but she's incredibly frustrated by the whole thing.
- Big Bad Wannabe
- Bullying a Dragon: He frequently insults Cargn, despite the Scarran being much more powerful than him. Its what gets him killed.
- Even Evil Has Loved Ones: He does care about his family, even if he cares far more about gaining the throne. He'll poison Katralla's DNA, but he never considers killing her and everyone knows it.
- Spoiled Brat: He's a whiny moron constantly throwing a temper tantrum when things don't go his way.
- The Unfavorite: His own mother call him an idiot. She's not wrong.
- Nice Guy: Downplayed. He almost never smiles, but he's nothing but helpful to the people around him and he carries no resentment toward Crichton for almost marrying Katralla.
- Reasonable Authority Figure: Consistently the most rational of the royals, from recognizing how dangerous Clavor is to helping out the heroes where he can. Unfortunately, the rules and orders of the Empress prevent him from taking as much action as he'd like.
Everybody's nightmare auto mechanic.
- Deadpan Snarker: Gets her share of smartassed remarks.
- Break the Cutie: Rylani was just an innocent woman embarking on a pioneering expedition to colonize new worlds until their ship was assaulted by Scarrans, everyone aboard was killed (including her husband) and she was taken prisoner. Then it got much worse.
- Death by Childbirth: The effort to give birth to Scorpius and her already broken mind brought her life to an end.
- A Fate Worse Than Death: According to Scorpius' caretaker, the gestation destroyed her mind and made her plead for death.
- Happily Married: To Ghebb Dellos.
- Missing Mom: To Scorpius.
- Rape as Drama: She was raped in a effort to produce an Scarra-Sebacean hybrid, by the very Scarran who killed her husband.