Blanche Brier later Denniston
- Babies Ever After: She and Bear have a son named after Ben.
- Deadpan Snarker: Occasionally- especially in the first book when she acts as a straight man to Rose.Blanche (after Rose gets enthusiastic about a ridiculous furry blue coat, only to find it's way over their budget): "They know how to keep dangerous garments off the streets."
- Foolish Sibling, Responsible Sibling: Responsible Sibling to Rose's Foolish Sibling.
- Happily Ever After: She and Bear, of course.
- Huge Guy, Tiny Girl: Tiny Girl to Bear's Huge Guy.
- Innocent Blue Eyes: Has bright blue eyes and is a kind, decent person.
- Proper Lady: Calm, responsible Blanche enjoys staying at home reading or sewing and never gets into scrapes.
- Raven Hair, Ivory Skin: Her defining physical traits. She doesn't see her pale skin as a pretty thing, though.
- Red Oni, Blue Oni: Blue Oni to Rose's Red.
- Sugar-and-Ice Personality: Blanche can be very cold to people she doesn't trust, but she's actually a very nice girl and loyal friend.
Rose Mary Brier
- Cloudcuckoolander: Blanche thinks she's this, but...She views life as a fairytale (though in this series, she's right), doesn't hesitate to become a Kid Detective following Mr. Freet into his house when she overhears he's stolen Mass instruments, which actually turns out better than it might have if she'd just called the police, and it's hinted that she's even right to think she can change the color of her eyes.
- Fiery Redhead: Rose does have a temper, but she's overall very sweet and agreeable.
- Foolish Sibling, Responsible Sibling: Foolish Sibling to Blanche's Responsible Sibling, although she is actually fairly responsible on her own most of the time.
- Manic Pixie Dream Girl: To cold, detached Fish. She's the popular free spirit who helps him open up more.
- Redheads Are Uncool: Averted. Rose is very well-liked in both high school and college.
- Red Oni, Blue Oni: Red Oni to both Blanche's and Fish's Blue.
- Savvy Guy, Energetic Girl: Energetic Girl to Fish's Savvy Guy.
Arthur "Bear" Denniston
- Big Brother Instinct: Do NOT mess with his little brother (or Blanche and Rose) or you'll find out the hard way why they call him "Bear".
- Cultured Badass: Is a tough fighter, but loves architecture and poetry- even written his own.
- Face of a Thug
- Huge Guy, Tiny Girl: Huge Guy to Blanche's Tiny Girl.
- Manly Tears / Tender Tears: Twice- when Jean and Rose Brier arrive to help him find Blanche, who seems impossible to track down, and when his stepmother dies- as complete a monster as she was, he didn't want her life to end that way.
- Genius Bruiser: He has the build of a football player but writes excellent poetry and is a talented architect.
Benedict "Fish" Denniston
- Badass Bookworm
- Brains and Brawn: Brains to Bear's Brawn.
- Defrosting Ice Queen: Fish is a male version of this in "Waking Rose".
- Face of a Thug: He has this by Waking Rose, because of all the scars he's collected, but before he very decidedly didn't.
- Knight In Sour Armor
- Savvy Guy, Energetic Girl: Savvy Guy to Rose's Energetic Girl.
Raphaela Zilberger Birth name: Teresa "Teresita" Torrode
The heroine of Rapunzel Let Down. Raphaela is the young adopted daughter of a feminist scientist with a budding new femininity and curiosity about the gender she's been hidden away from growing close to for most of her life- men.
- Brainy Brunette: She's 16 and so good with the sciences that her tutor suggested she's ready to start working at a lab.
- Damsel in Distress: She laments on this after Hermes helps her and their twins escape risking his own life, noting that every book she'd read had the heroine save herself. She realizes that it takes courage to save oneself to save another and that it's nothing to be ashamed of.
- Kind Hearted Cat Lover: She looked after the barn cats before they disappeared and was heartbroken when she found out.
- Long Hair Is Feminine: Symbolizes her growing femininity and foil to her mother.
- Mad Scientist's Beautiful Daughter: Raphaela is considered very beautiful to Hermes, though her mother is much more 'extremist' than mad until things get pretty bad.
- Pregnant Badass: Raphaela sneaks out of the hospital undetected when her mother is almost forcing her to have an abortion or at least give up her babies. She survives by passing as a student on campus borrowing clothes and a backpack from Lost and Found centers, washing produce in exchange for food, depending on food drives, all the while studying medicine at the library where she hides and sleeps. Later she hikes to another town to stay at a women's home, then to ANOTHER town to work in a woman's basement as a telemarketer, THEN gives birth by herself in a cabin in the woods. And did we mention sneaking her infants down the tower and over a fence to save them?
- Proper Lady: She dresses very well, has good table manners, does what her mother tells her, and is polite.
- Rapunzel Hair: Of course. It's almost to her feet.
- Spicy Latina: Averted. Raphaela is innocent, sweet, and doesn't even know what her Latino nationality at first.
- Teen Pregnancy: True to the fairy tale, Raph gets knocked up and does not know it until Elma notices.
- Tomboy and Girly Girl: Interestingly, this book defies the normal "Ladylike mother vs. Spirited Young Lady daughter". Elma, her mother, is the tomboy, a second-wave feminist biologist who disapproves of her daughter's like of long hair, embroidery, and feminine clothes (but still indulges her).
- Traumatic Haircut: When Elma realizes Raph is pregnant.
Herman "Hermes" McCaffrey
The 'prince' of Rapunzel Let Down. The risky son of a popular Conservative Catholic senator and often feeling second-best to his two older brothers, he meets Raphaela by pure chance.
- Always Someone Better: How Hermes has always felt towards his big brothers Christopher and Matt, particularly the former for his good looks and irresistible charisma.
- Hero with an F in Good: His failure to live up to his own moral standards causes half the problems in the book.
- Meaningful Name: His nickname is Hermes- the god of thieves and gambles. Hermes 'steal's Raphaela's innocence and loves taking risks.
A childhood friend to the Brier sisters, Kateri is a half-Vietnames/half-Polish girl from a large family of political activists. She's very outspoken, honest, and loyal. She can hold a grudge but will own up if she was in the wrong.
- Action Girl: Especially next to Rose and Blanche.
- Braids of Action: She usually wears her hair like this and is very pro-active about her causes.
- Dance Battler: When Kateri finally does the fan dance in Alex O'Donnell and the Forty Cyberthieves.
- Massive Numbered Siblings: She has loads of brothers and sisters.
- Soapbox Sadie: She can come off as this to people.
A boy Rose meets during her first year of college. Proud of his nerdiness, Alex is enamored with samurai swords, Japanese action films, and is the leader of the faux-knighthood made up by him and his friends, Sacra Cor. He gets his own book in Alex O'Donnell and the 40 Cyber Thieves.
- Cloudcuckoolander: One of the things he gets his group to do is set a couch on fire outside their dorm while singing "This Little Light of Mine".
- Cool Sword: Sword? He has a whole collection of these! And knows how to use them!
- Extraverted Nerd: Probably his most distinctive quality.
- Lovable Nerd
- Nerd Action Hero: He turns into this to help Fish save Rose.
One of Alex's friends, med student Paul is not quite as geeky as Alex but is very into knighthood as well. He gets his own book in The Midnight Dancers.
A crankily erudite treasure collector.
- Number of the Beast: Uses 666 as a lock combination.
- Straw Misogynist: Openly despises women and girls, even calling them uglier than men.
- Wicked Cultured: Reads the works of George Bernard Shaw and pre-Christian Gnosticism. Knowledgeable about the sculptures of Michelangelo Buonarroti.
Dr. Elma Zilberger
A reclusive feminist scientist who adopted Raphaela from Central America. She emphasizes privacy and doesn't like for Raphaela to meet boys.
- Evil Matriarch: But it takes a lot for this to really come out to Raphaela.
- The Kindnapper: She truly sees herself as this. Raph's birth family were poor Mexicans with 14 children. Elma caught her father stealing lettuce from Elma's scientists' greenhouse to feed his starving pregnant wife. She catches him, is disgusted that he's 'forced' his wife to not use birth control, and only lets him go if she can have their baby.
- Mad Scientist's Beautiful Daughter: Well, not 'mad' exactly, but an extremist scientist.
- Real Women Don't Wear Dresses: A firm believer of this that she tries to instill in Raphaela, and the main reason she hasn't let her embrace her Hispanic heritage, because they teach girls to be "subservient".
- Straw Feminist: Does not like men and looks down on traditional femininity.
- Tomboy and Girly Girl: The tomboy to her daughter's girly girl, and the contrast is the conflict at times.
- Wicked Witch: Raphaela's biological family thinks she's an actual witch.