The BFFL
- Color-Coded Characters: Purple/pink for Amethyst, red for Ruby, blue for Sapphire, yellow/gold for Topaz, and black/dark purple for Onyx.
- Curtains Match the Window: Their hair and eye colors are similar, with the exception of Amethyst whose purple eyes don't match her pink hair, and Ruby, who is a natural brunette but died hers red.
- Five Temperament Ensemble: The Nice Girl Amethyst is Phlegmatic, the Fiery Redhead Ruby is Choleric, the studious and reserved Sapphire is Supine, the Goth Deadpan Snarker Onyx is Melancholic, and the bubbly Cloudcuckoolander Topaz is Sanguine.
- Meaningful Name: All are named after various precious gemstones, of which they take their theme colors from.
Amethyst van der Troll
The leader of the BFFL. She is a total sweetheart, and acts as the heart of the BFFL. She's generally kind and eager-to-please, but can be hard on herself in tough situations. Amethyst was the last of her friends to get her gem glow, and finds she's a natural spellcaster. Her boyfriend is the cute, clumsy Coal, and her Ancient is her grandma.
- Affectionate Nickname: Her grandmother calls her "Ammy".
- Audience Surrogate: For the first few episodes, the audience gets to know the setting from Amethyst's POV.
- Badass Adorable: All of the BFFL is this, but her sweet personality makes her stand out.
- Beware the Nice Ones: She's a sweetheart for sure, but she's just as strong as her friends when things get hairy.
- Birds of a Feather: With Coal. They're both nice and friendly.
- Cute Clumsy Girl: Makes her a great fit for Coal.
- Cute Witch: She's a sweet girl who's a natural spellcaster.
- The Everyman: She doesn't have as much development as the other BFFLs. She's just nice and harmless.
- The Heart: She's the main emotional element keeping the BFFL together.
- Naïve Newcomer: She's the newest at casting spells in the group.
- Nice Girl: She's the nicest of the BFFL, sometimes to the point of being a pushover.
- Pink Heroine: She's the main heroine of the show and her theme color is pink.
- Pink Means Feminine: Pink is her main color and she's the most traditionally feminine of the main girls.
- Rose-Haired Sweetie: Pink-haired, sweet, nice and friendly.
- The Von Trope Family: A variant. She's Dutch-American and she has "van" in her name.
Ruby Trollman
Ruby Trollman is the second-in-command the BFFL. Coming from a rich family, she can be spoiled, self-centered, and abrasive, and has trouble asking for help or admitting when she makes mistakes. Ruby's also not the best spellcaster, but she has nerves of steel and never backs down from a challenge. Her boyfriend is the muscle-bound Rock, and her Ancient is Obsidian.
- Badass Adorable: She storms Simon's lair and saves her friends with Coal and Rock's help.
- Belligerent Sexual Tension: With Rock. They bicker as much as they flirt, if not more so.
- Curtains Match the Window: Averted in her case, as her red hair is dyed to match her eyes. Her real hair color is brown.
- Cute Witch: Not the best at spellcasting though…
- Famous Ancestor: Accordng to Obsidian, Ruby's a direct descendant of King Trollemange the First. Her last name, "Trollman," is even a watered-down version of "Trollemange."
- Fiery Redhead: Her hair is (dyed) red and she's quite determined and feisty, though abrasive at times.
- Inferiority Superiority Complex: In the first episode, she kicks Amethyst out of the group because she feels like Amethyst is better than her.
- Jerk with a Heart of Gold: She's rude to all her friends, but she's also the most determined to help them if they're in trouble. A later story arc emphasizes this when she realizes her friends are acting mean like she does at times, so she vows to clean up her act.
- The Lancer: She's supposed to be the second-in-command of the BFFL. Her more bossy and headstrong personality make her a direct foil to Amethyst.
- Lovable Alpha Bitch: She may have a mean popular girl attitude, but she's redeemed by the fact that she cares about her friends.
- Red Is Heroic: She has bright red hair and is one of the heroes. She's the one who rescues everyone in the last arc.
- Single Girl Seeks Most Popular Guy: Heavily implied, considering her beau Rock is MVP of their school's football team.
- Spiky Hair: Her hair sticks up in all directions like a five-pointed star.
- Spoiled Brat: She's well-off and not afraid to flaunt her wealth.
- Unskilled, but Strong: She's not the best spellcaster but she's very strong.
Sapphire Trollzawa
Sapphire Trollzawa is smart and ambitious, and takes studying and learning more seriously than her other friends. She can be shy at times, but Sapphire knows quite a lot about history, science, and much more, making her useful in dangerous situations. Her boyfriend is the nerdy Alabaster, and her Ancient is Mr. Trollheimer.
- Amicable Exes: She dated Rock Trollhammer (Ruby's current boyfriend) sometime prior to the start of the series but broke up with him for unknown reasons—however, they're on good terms to the point of where Sapphire clearly has no problem with Rock dating Ruby.
- Asian and Nerdy: She's a smart girl of Japanese descent.
- As Long as It Sounds Foreign: Trollzawa sounds like some Japanese name with the word "troll" added to it.
- Badass Adorable: She's a smart and kind of shy girl who uses her smarts to help her friends out of tough situations.
- Badass Bookworm: She's defeated Simon many times and faced a volcano.
- Blue Is Calm: She wears blue as her theme color, and is the most demure and sensible member of the BFFL.
- Blue Means Smart One: Sapphire is The Smart Girl of the BFFL. She takes school-related things the most seriously out of all five of them. She has blue hair and bright blue eyes, wears a blue sweater, and her gem is blue.
- Cute Bookworm: She's a very smart and studious girl with a shy streak.
- The Dark Side: Fell victim to this in episode 11.
- Navel Window: The few times her gem is visible, her skirt is pushed down slightly to expose it between the lower sashes of her sweater.
- Nerd Glasses: She has a pair of large round glasses and is the nerdy girl of the group.
- Nerdy Nasalness: She has a nasal voice.
- Shy Blue-Haired Girl: Her hair is blue and she can be kind of shy at times.
- The Smart Girl: She's the most intelligent and studious girl of the BFFL.
- Youthful Freckles: She's a nerdy teenage girl with freckles on her cheeks.
Onyx von Trollenberg
Onyx von Trollenberg is a not-so-scary goth. She has morbid interests and can be sarcastic at times, but she's a genuinely good friend who's willing to listen, even if she strikes off alone at times or has trouble asking others for help. Onyx is not good at driving, but is good at casting spells. Her boyfriend is the emo poet Flint, and her Ancient is Spinell.
- Cannot Tell a Lie: She's very honest.
- Cute Witch: Her morbidity and snark downplays the "cute" part at times, but she's great with spellcasting.
- Dark Is Not Evil: She's got dark purple hair and dark clothes but she's one of the heroes.
- Deadpan Snarker: She has the sharpest wit of the BFFLs.
- Drives Like Crazy: She's not good at driving her Skoot.
- The Gadfly: In the first episode, as a joke she tells Amethyst, "Squeal with delight and then I'll puke." When Amethyst looks confused and upset, Onyx smiles and says "Come here, ya wingnut!" before hugging her.
- Goth: Her cultural interests involve rock music and she wears dark clothes.
- Jerk with a Heart of Gold: She's a good friend and listener despite her sass and gothicness.
- The Von Trope Family: She is German, so it is natural that she has this kind of name.
- Weak, but Skilled: She's not a fighter like Ruby is but she's good at casting spells.
Topaz Trollhopper
Topaz Trollhopper is a fashionista, and isn't always aware of what's going on at times. Silly, sweet, and serious when she has to be, Topaz tends towards the quirky side of things, which can help her friends in a bind. Her boyfriend is the hip-hop cool guy Jasper, and her Ancient is Zirconia.
- Alliterative Name: Both her first name and her surname begin with "T".
- Badass Adorable: She's a sweet and quirky girl whose quirky ideas can actually help her friends out of sticky situations.
- Beware the Silly Ones: She's quirky most of the time, but when things get serious, she can be too.
- Cloudcuckoolander: Her brain can go to some weird places sometimes.
- Cute Clumsy Girl: In her first appearance, she has trouble removing her Skoot helmet.
- Cute Witch: She's a sweet girl who can cast magic just like the rest of her friends.
- Demonic Possession: She got possessed by Simon in "Topaz Possessed".
- The Ditz: She can be something of an airhead.
- Dumb Blonde: She's blonde and certainly not the brightest bulb in the chandelier.
- The Fashionista: She has the gift of supreme fashion sense.
- Messy Hair: Wears a giant frizzy bun to reflect her ditsy personality.
- Skewed Priorities: She freaks out when Simon ruins her favourite shoes while possessing her.
- Hair of Gold, Heart of Gold: She's the blonde of the group and she's a nice, helpful girl.
The Ancients
Obsidian
The operator of the spell shop at the Trollzopolis Mall, Obsidian has a very wide array of knowledge. She and the other Ancients fought Simon 3,000 years ago. She is the Ancient counterpart to Ruby because of both always taking command.
- Cool Old Lady: She listen and gives good advice to Ruby about her friends turning into jerks.
- Mentor Archetype: Though she mentors all five of the BFFL as a whole and was the first of the five Ancients that the girls met, Obsidian's definitely the closest to Ruby Trollman, especially since Obsidian is Ruby's Ancient.
- Never Mess with Granny: She's one of the Ancients and can still be powerful when she needs to be.
Grandma van der Troll
One of the five Ancients who is not only Amethyst's grandmother, but is also her granddaughter's Ancient. Similar to Obsidian, while Grandma van der Troll is obviously closer to Amethyst than the other four members of BFFL, she mentors all five of them as a whole and is always eager to listen or help if the situation calls for it. She is knowledgeable about spells, and has several magic artifacts in her possession for safekeeping. Her granddaughter is her counterpart, and The Heart of the original Ancients.
- Cool Old Lady: She's helpful and a good listener, and pretty powerful too.
- Never Mess with Granny: She's quite knowledgeable about spells and has many magic artifacts for safekeeping.
- No Name Given: Her name is never revealed.
Mr. Slate Trollheimer
The girls' science teacher at Trollzopolis High School who's one of the five Ancients who fought Simon 3,000-years ago and is eventually revealed to be the Ancient-counterpart of Sapphire, The Smart Guy of the BFFL.
- Butt-Monkey: He tends to get injured/captured a lot and often has other embarrassing things happen to him.
- Cool Old Guy: He's an Ancient, this is kind of their job description.
- Cool Teacher: He's the girls' science teacher and a pretty alright guy.
- Hot Teacher: Sapphire commented that she finds Mr. Trollheimer attractive.
- Mentor Archetype: Similar to Amethyst's grandmother and Obsidian (as well as the fact he's the science teacher to all five of the girls), Mr. Trollheimer mentors all five of the BFFL as a whole, but is closest to Sapphire.
- Really 700 Years Old: All the Ancients are supposed to be well over 3,000-years-old. While the other four Ancients all look suitably old, Mr. Trollheimer looks young enough to be the father of the BFFL.
Zirconia
Topaz's Ancient who also happens to be Spinell's wife. She fought Simon long ago alongside the other Ancients, but it came at a cost—he imprisoned her within a tree for 3,000 years, draining her magic. At first, Topaz was in denial of Zirconia being her Ancient, but eventually came to accept it, especially when she and Zirconia bonded over a common interest in fashion. Much like Topaz, Zirconia can be rather quirky, but she's also a powerful sorceress and has psychic powers.
- And I Must Scream: Spent 3,000 years as a tree, while conscious the entire time.
- Cloudcuckoolander: Like Topaz, she's something of an oddball.
- Cool Old Lady: She's quite quirky though.
- Dreaming of Things to Come: How her psychic powers manifest.
- Forced Transformation: Was transformed into a tree.
- Happily Married: To Spinell
- Savvy Guy, Energetic Girl: Energetic Girl to Spinell's Savvy Guy.
- Sealed Good in a Can: Sealed in a tree.
Spinell
Onyx's Ancient who also happens to Zirconia's husband. Much like his wife, Simon imprisoned him for 3,000 years—this time as a fire-breathing dragon made to guard the tree Zirconia became. Spinell tends to be snappy and sarcastic, but is good at magic, even if the long imprisonment drained his powers some. And just like his wife, Spinell has psychic powers.
- And I Must Scream: Spent 3,000 years as a dragon who couldn't talk.
- Cool Old Guy: Though more snarky than the other Ancients.
- Cursed with Awesome: Was transformed into a dragon for years. While he couldn't talk, it's certainly better than what happened to his wife.
- Deadpan Snarker: Fitting, since Onyx is also one.
- Happily Married: To Zirconia.
- Henpecked Husband: Zirconia tends to make him do much of the heavy lifting.
- Savvy Guy, Energetic Girl: Savvy Guy to Zirconia's Energetic Girl.
Villains
Simon
The main villain of the series. Simon is a gremlin who's over 3,000 years old, and was banished to the Shadow World for imprisoning two of the five Ancients, turning most of the good magic evil, and destroying the world of the Trollz as they knew it. His actions led to magic being greatly reduced for Trollz as a whole. Once the BFFL accidentally free him, he intends to finish what he began and conquer the world—but luckily, the Magic of the Five can put an end to his evil plans. Simon isn't one to give up so easily, though, and returns again and again in his attempts to take over Trollzopolis.
- Big Bad: He's the series' main villain.
- Creepy Child: He looks the part at least.
- Disguised in Drag: In one episode, he disguised himself as a girl troll named Garnet.
- Evil Is Petty: Most of his schemes are motivated by pettiness.
- Evil Laugh: Does this a lot.
- Evil Redhead: He's ginger and is evil.
- Fangs Are Evil: He's an evil gremlin with sharp fangs.
- Griping About Gremlins: He's an evil gremlin.
- Immortal Immaturity: Is over 3000 years old but looks like a 9-year-old with the bratty, selfish personality to match.
- Not-So-Harmless Villain: He's comical but manages to take over Trollzopolis twice, and in the backstory he completely changed the rules of magic for Trollz.
- Really 700 Years Old: He looks and sounds like a little kid, but yet he's apparently well over 3,000-years-old.
- Sealed Evil in a Can: Sealed in the Shadow World for his crimes.
- Supernatural Gold Eyes: Being a magical gremlin, Simon has these.
- "Uh-Oh" Eyes: When disguised as a troll his pupils are larger than others'.
- Yellow Eyes of Sneakiness: His eyes are yellow and he's quite mischievous.
Snarf
Simon's sidekick and pet. Snarf looks like a cute puppy, but can transforming into a ravenous, rampaging ogre-beast at will. Luckily, Snarf isn't too bright, and he tends to be banished alongside his master whenever their plans are foiled.
- Butt-Monkey: Simon tends to belittle him a lot.
- Cute Is Evil: He looks like an adorable puppy, but he's actually a monster as evil as his master.
- The Dragon: He's Simon's main minion.
- Evil Laugh: Does these along with Simon.
- Non-Human Humanoid Hybrid: Snarf is said to be half ogre and half dog. Which leads to squick about how he came about, he did mention having a mother once...
- One-Winged Angel: He can transform into a massive ogre-beast at will.
- Ridiculously Cute Critter: Except when transformed.
- Sealed Evil in a Can: Alongside Simon.
The Dragon
- See Spinell's entry for more information.
The Boys
Coal Trollwell
Amethyst's boyfriend. Coal is cute and clumsy, and is generally the most sensible of the boys—but he does have a mischievous side now and then. He rides a hoverboard.
- Distaff Counterpart: He's mild-mannered like Amethyst.
- The Klutz: The first time we see him he trips over a garbage can and drops a surfboard on his foot.
- Nice Guy: He's a sweetheart, like his girlfriend.
- Not So Above It All: When the boys start pelting each other with sacred amber, he tries to stop it. Then he gets hit with amber himself he joins in on the fight.
- Only Sane Man: He's the only one of the boys who thinks going to the Amber Caves to get magic is a bad idea in "The Day the Magic Died".
- Taken for Granite: He's turned into ice when the Trollz cast a spell on him to make him "cool". Fortunately, he's turned back.
Rock Trollhammer
Ruby's boyfriend. He likes to play in sporting events such as Trollball.
- Amicable Exes: He and Sapphire dated sometime prior to the start of the series, but she broke up with him for unknown reasons—but they appear to be on good terms and she seems perfectly fine with him going out with Ruby.
- Belligerent Sexual Tension: With Ruby. They bicker as much as they flirt, if not more so.
- Big Eater: According to his character bio, he can eat 23 Trollburgers in one sitting.
- Distaff Counterpart: He's a single-minded fighter like Ruby.
- Dumb Jock: He is the captain of the Trollball team and one of the strongest Trolls around. He's also dumb as a rock.
- Dumb Muscle: He's all muscle, and isn't too bright.
- Forced Transformation: He's turned into a dog by the evil BFFL in "When Good Girlz Go Bad". Ruby quickly changes him back.
- Green-Eyed Monster: He's jealous of the fact that girls can use magic and the boys can't.
- Lovable Jock: He's the star of his school's Trollball team. He's an idiot, but his love for Ruby and determination to help are sincere.
- Simpleton Voice: Matt Hill uses his Kero voice for Rock.
Alabaster Trollington III
Sapphire's boyfriend. While nerdy, Alabaster comes from a rich family, and his state-of-the-art technology has helped the BFFL more than once.
- Badass Bookworm: He uses his tech smarts to save Coal and Flint from falling into a chasm.
- Bully Magnet: He gets picked on by the rest of the boys for being a nerd.
- Cannot Spit It Out: He's in love with Sapphire, but he's too shy to tell her how he really feels.
- The Comically Serious: He doesn't have much of a sense of humor, which makes him a Bully Magnet for the other boys.
- Distaff Counterpart: He's a bookworm like Sapphire.
- Gadgeteer Genius: He builds state-of-the-art technology.
- Gentleman Snarker: He has his moments, such as in "Onyx's Gem" after the BFFL fail their gymnastics routine.Coal: What do you think, Alabaster? Think they have a shot at beating the seniors?
- Hair of Gold, Heart of Gold: Had blond hair and is a nice person.
- Lovable Coward: He found a way into the Amber Caves but he didn't go in very far. Later in "The Day the Magic Died" he only went in further because he had the other boys with him.
- Nerd Glasses: He has a pair of thick rectangular glasses.
- Nice Guy: The nicest of the boys besides Coal.
- Pair the Smart Ones: With Sapphire. They're the nerdy members of their groups and obviously like each other.
- The Smart Guy: He's the smartest of the boys.
- Smug Super: He's overconfident about going into the Amber Caves because he thinks he has the technology to get magic via the Sacred Amber. His GPS and fishing line come in handy; his pickaxe does not.
- Spoiled Sweet: He's a nice guy whose father happens to be a multi-millionaire.
- The Team Benefactor: He provides the resources on some of the trolls' missions. In "The Day the Magic Died" some of his gadgets have gotten the other boys out of trouble.
- Young Entrepreneur: He's an aspiring business-troll.
Jasper Trollhound
Topaz's boyfriend. He used to have hair until a hair-removal spell was cast, but dug how it went with his hip-hop style. Jasper likes parties and music, as well as being cool—but what he likes most is being himself.
- The Bully: He has shades of this. He makes fun of Alabaster a lot.
- Distaff Counterpart: He's fun-loving like Topaz.
- Fun Personified: He likes parties and music. Of the boys he's the life of the party.
- Hair Today, Gone Tomorrow: Jasper is seen with an afro at first, then Amethyst's spell makes him lose his hair. He decided it looked cool and keeps it shaved.
- He-Man Woman Hater: Because girls have magic and boys don't, he becomes convinced that men are systematically oppressed by women.
- Jive Turkey: He's very into hip-hop and is the life of the party.
- Token Minority: He's the only dark-skinned Troll of the boys.
Flint Trollentino
Onyx's boyfriend. Flint is an emo poet who plays a rocking guitar, and while his poems may be out-there, his heart is in the right place.
- Birds of a Feather: With Onyx. They're a Goth couple.
- Distaff Counterpart: He's a goth like Onyx.
- The Heart: Of the boys. He's the most in tune with his emotions, and gives the best relationship advice.
- Mellow Fellow: He rarely gets upset about anything. The most reaction he has is making up a song about what's happening.
- Rockers Smash Guitars: He does it with a lute in "Not-So-Good Old Days".
- Spiky Hair: His hair looks like a giant sea urchin.
Others
Coral, Opal, and Jade
A trio of cheerleaders at Trollzopolis High School who're frequently mean to the BFFL. Coral in particular is spoiled, haughty, and perpetually stuck-up.
- Alpha Bitch: All three are this, but Coral's definitely the biggest one.
- Cruel Cheerleader: All three are mean-spirited, stuck-up cheerleaders, with Coral even being the head cheerleader for Trollzopolis High.
- Evil Laugh: Coral has a laugh that sounds like a witch's cackle.
- Fiery Redhead: Coral's hair is red and brown and she's quite bitchy.
- Girl Posse: Opal and Jade follow behind Coral and act as her main support.
- Jerkass: Even moreso than Ruby.
- Laser-Guided Karma: In the third episode, they give "late passes" to the BFFL, but when Principal Trollercrombie discovers them, he explains to the BFFL that THS-students can only get late passes from the office, meaning that the late passes Coral, Opal and Jade gave them were fake. While he's nice enough to let the BFFL off with a warning (especially once the girls make it clear that they had no idea that the passes were fake), he ends up chewing out Coral, Opal and Jade for what they did and punishes them by giving them detention. Of course, Coral blames the BFFL for her and her friends getting in trouble (even though it was their own fault), going so far as to claim that BFFL "squealed" on her and her friends.
- Satellite Character: Opal and Jade don't really have any role in the series outside of being Coral's friends/fellow cheerleaders.
- The Voiceless: Opal and Jade don't talk at all throughout the series, except for one episode. Opal also speaks in 'Hair Affair!'' video game.
Mica and Shale
Villains for episodes 7-9. Mica is a hotshot Skoot racer, while Shale is his girlfriend, and they have designs on Sapphire to help Mica win the big race.
- Arc Villain: Villains of The Big Race arc.
- Exotic Eye Designs: Subverted; Shale wears contacts.
- Heel–Face Turn: Mica turns good in episode 9, after the girls save his life.
- Jerk with a Heart of Gold: They're both jerks, but Shale admits that Mica should have been thankful for Onyx saving his life and Mica is thankful for the girls saving his life in the next episode.
Kaboom
The test subject for many of the Spell Moments, whether he likes it or not.
- The Dog Bites Back: The spell moment in "Not-So-Good Old Days" features Ruby using a spell to make Kaboom's ears grow abnormally large. Kaboom uses a caller ID that makes the spell afffect Ruby's ears as well.
- Iron Butt-Monkey: Each episode has a "spell moment" where one of the BFFL uses Kaboom as a test subject for a spell and Hilarity Ensues. No matter what happens to him on each spell moment, his next appearance shows no residual effects.