Other heroes the Guardians can rely on in a crisis.
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Elyon Brown
Voiced by: Serena Berman
Cornelia's best friend, and secretly the lost princess and rightful ruler of Meridian.
- A Child Shall Lead Them: Elyon becomes the Queen of Meridian at the tender age of 13.
- Adaptational Heroism: She's portrayed as consistently naive and misguided in the show during her Face–Heel Turn phase. In the original comics, she was much nastier and more manipulative, although she still made a Heel–Face Turn by the end of the Phobos story arc.
- Adaptational Name Change: The cartoon changed her adoptive last name from Portrait to Brown.
- Adaptation Relationship Overhaul: In the comics, Elyon had a crush on Matt, and her jealousy of Will dating Matt was a factor in her Face–Heel Turn. Here, he doesn't appear to be anything more than another classmate to her.
- And I Must Scream: In season two, Nerissa traps her in a jewel as the Heart of Meridian. No one can hear Elyon banging and screaming from inside the crystal and she stays that way for most of season two.
- Anti-Villain: Just like the comics, she is being misled and has good intentions for her people while acting against heroes in villain's favor.
- Chekhov's Gunman: In the first episodes of the cartoon, Elyon appears as an ordinary girl without any indications that she is the rightful queen of Meridian. Her importance to the plot is revealed only in the eleventh episode.
- Deadpan Snarker: At times in the show.Nerissa: Caleb is my son. I will not allow Phobos to harm him.Elyon: Yeah, you're Mother of the Year.
- Didn't Think This Through: Like the comics, she leaves Earth immediately to go to Meridian/Metamoor as soon as Cedric tells her about her origins. This means that the police start investigating her disappearance, and worries ensue when her friends are investigated. In the show, it's even worse in that her friend Alchemy was worried sick about her. As a result, after Phobos's defeat and her Heel–Face Turn, Elyon and her adoptive parents return and spin the story that they were traveling for months. Elyon then finishes the rest of the school year (with Caleb, being her protector, also enrolling) before transferring out so that she can be full-time in Meridian. She's also truly regretful upon seeing how worried Alchemy was.
- Easily Forgiven: Particularly in the animated series. Granted, she was suckered into it all, but she was warned by the Guardians several times about it and received several hints, but never caught on until it was too late, yet all the Guardians forgive her immediately afterwards for all the times she tried to blast them. Will in particular takes the blame for refusing to tell her anything. With that said, karma does eventually hit her; being Queen means that she has to handle both the boring and dangerous decisions in Meridian, her disappearance gets the Guardians in trouble with the police and she has to return to Earth for a while, and Nerissa traps her in a crystal and makes her a Badass in Distress.
- Graceful Ladies Like Purple: In season one of the TV series Elyon wears a matching purple sweater and skirt.
- Heel–Face Revolving Door: She starts as the Guardians' friend and classmate, and Cornelia's best friend, only to switch sides as soon as Cedric tells her the truth about her origins. She does start to realize that her friends aren't evil, but still believes she is at home with people who love her and that the Guardians, especially Cornelia, are just misguided. Then Phobos tries to kill her at her coronation, and Cornelia saves her. Then she lashes out at Phobos and helps the Guardians imprison him.
- Heel–Face Turn: In the first season, "Cornelia! Oh, Cornelia, I'm so sorry!"
- Horrible Judge of Character: Her greatest personal flaw is that she repeatedly trusts the wrong people and believes those she has only known for a few weeks over her closest friends and the ones who raised her for most of her life. She takes absolutely everything Cedric (disguised as her ideal man) and Phobos tell her at face value despite being repeatedly warned about them by everyone she knows and believes Trill's version of her biological parents' attitudes over her adoptive parents' version. Both times, this comes back to bite her on the ass when Phobos and Nerissa (Trill's true identity) respectively steal her powers and imprison her. The first time, she does have a slight excuse in that both her friends and adoptive parents chose to deliberately conceal the truth from her.
- Laser-Guided Karma: She spends the second half of season one unwittingly manipulating the rebel forces through her powers, accidentally hurting her normal and Guardian friends when they're worried about her, and only learning that Phobos wants her dead when he absorbs her powers at coronation. Come season two, she's burdened with the responsibilities of being queen, has to return to Earth when Alchemy reports her disappearance, and then gets manipulated again by Nerissa into surrendering her power when she's given false visions of her parents. Then she's trapped in a crystal for most of season two, banging at the walls desperately and screaming.
- Locked Out of the Loop: Deconstructed. Against Cornelia's reservations, Will chose to keep Elyon in the dark about her and the others' double lives as Guardians and her true identity as the princess of Meridian... which bites them in the ass when Cedric and Phobos do tell her the truth and use it to manipulate Elyon into joining their side.
- MacGuffin Super-Person: Like the comics, Phobos is obsessed with gaining her powers. As is Nerissa in the show as it's implied that Phobos's entire reign was just a ploy by the fallen Keeper to obtain the Heart of Meridian.
- Meaningful Name: Elyon means "The Most High" or "Highest" and was the name of the ruling God of Canaan as well as being one of the man titles that the Abrahamic God possesses. Once you know this, her almost godlike power and place as true ruler suddenly seem very logical.
- More than Mind Control: In season 1, she is manipulated but not controlled.
- Power Incontinence: Being the Heart of Meridian (Light of Meridian in the comics), Elyon has immense powers but not a lot of experience in using them yet. In one episode of the first season, when she tells Caleb's friend Aldarn that Phobos wants peace with the rebellion and then lets him go, she hypnotizes Aldarn into believing the truth of her words without realizing what she's doing, prompting him to challenge Caleb's leadership of the rebels.
- Princesses Rule: Averted. After Phobos's defeat at her coronation, Elyon is the Queen of Meridian. She later laments that she went straight to the queen part without being able to enjoy the princess part, like balls and a Prince Charming.
- Strong Family Resemblance: Everyone really should have cottoned on sooner to who was Phobos's lost sister.
- Unwitting Pawn: Phobos and Cedric skillfully manipulated her into thinking they were on her side.
- Worf Had the Flu: The second season had to find ways of preventing Elyon from resolving the plot with her potentially Story-Breaker Power level, so she spends much of the second half of it trapped in the Seal of Nerissa. Before that, in "D is for Dangerous", Nerissa's Monsters of the Week, the Annihilators, disappear whenever Elyon shows up to deal with them, only to reform themselves and resume trashing Meridian whenever she leaves.
Caleb
Voiced by: Greg Cipes
The leader of the Rebellion, later personal guard for Queen Elyon, and Cornelia's love interest/boyfriend.
- Adaptational Badass: Caleb is a badass rebel leader in the series who is much more of a fighter than the original and doesn't spend most of the series as a flower because of Phobos, either. A fan only familiar with the comics who read this page would likely say "back up a sec, Caleb is giving somebody combat lessons?"
- Adaptational Nice Guy: Caleb in the comics broke up with Cornelia on realizing she was a minor. She was mad, and it destroyed any amicability. While he tries the same thing in the animated adaptation, he still has feelings for her and tries to remain a friend. What's more, when Cornelia calls him out for prioritizing Meridian over their relationship, he admits a few episodes later that she has a point, makes an effort to apologize, and goes to surprise her at her favorite ice-skating rink. Things went south from there, but they reconciled.
- Adaptational Species Change: Caleb in the comics is one of Phobos's former plant advisers who decided to rebel (and has Pointy Ears and green facial markings). In the show, he's fully human and the son of one of the former Guardians.
- Age Lift: He's explicitly 15 in the animated series while his comic age is unknown.
- Arch-Enemy: In the show, particularly the first season, he and Cedric are almost constantly at odds.
- Ascended Extra: He's a fairly minor, though still significant, character in the comic; in the animated series he's one of the main characters and frequently acts as a sort of Sixth Ranger to the girls.
- Badass Longcoat: Caleb usually wears a brown longcoat when going off on missions.
- Badass Normal: He doesn't have any powers. He's also one of the biggest badasses.
- Belligerent Sexual Tension: With Cornelia in the cartoon.
- Chick Magnet: Besides Cornelia, Caleb has won the affection of Elyon (initially), Alchemy, and a couple of other Earth girls.
- Child by Rape: Via Bed Trick. When Caleb was conceived, Nerissa had fooled Julian into thinking she was the Mage, whose appearance she took on using a glamour. The real Mage was dead at that point, probably at Nerissa's own hands.
- Dark and Troubled Past: The cartoon doesn't include Caleb being Phobos's former minion, but he grew up as a half-orphan and his home was under the control of the cruel Phobos.
- Deadpan Snarker: In the TV show.
- Family Eye Resemblance: His green eyes are shared with his mother.
- Fish out of Water: Has trouble adjusting to Earth in both formats, though he gets better.
- Heroic Bastard: Implied. Julian never mentions being married to the Mage, aka a disguised Nerissa.
- Heterosexual Life-Partners: With Aldarn and Blunk in Meridian, and Matt, as of Season 2.
- Instant Expert: He gets the hang of skateboarding and snowboarding rather quickly. Apparently justified due to having participated in similar sporting activities on Meridian. Averted when he tries and fails to learn to play basketball.
- Jerk with a Heart of Gold: Caleb is rough around the edges and is quite rude to the girls (especially in season one), but he ultimately is courageous, selfless, and loyal.
- Missing Mom: Caleb grew up raised by his father Julian as a single parent. His mother was the Mage and Julian kept this a secret from Caleb and everyone else so that it couldn't be used against her. In truth, his mother is Nerissa, who took over the Mage's identity years ago and conceived him specifically to overthrow Phobos.
- Morality Pet: He is one to his mother, Nerissa, who outright says she won't allow others to harm him.
- Mr. Fanservice: Is quite muscular for a teen, wears form-fitting shirts and gets one Shirtless Scene in "The Seal of Phobos".
- No Social Skills: Justified. Caleb has a spent a good chunk of his life in a rebellion in Meridian, and isn't accustomed to Earth's culture. In Meridian, he's considered very charismatic and suave. He runs into problems when he enrolls in Sheffield Institute in Season 2 so as to stick close to Elyon, but Matt starts teaching Caleb how to fit in in exchange for Caleb teaching Matt how to fight.
- Odd Friendship: With both Blunk and Matt.
- The One Guy: In season one, he was the only male (human) friend the girls could count on for Guardian-related stuff. In season two, Matt becomes involved with the group as well.
- Politically Incorrect Hero: Downplayed. Caleb is often exasperated by girls and often wonders on how confusing they are but he's not sexist and respects them as fellow friends and partners.
- Rebel Leader: The leader of the rebellion against Phobos in season one.
- Related in the Adaptation: Since the cartoon had made Caleb a human being with a father instead of being a former Murmurer of Phobos, when Greg Weisman took over as showrunner for Season 2, he decided to make Nerissa Caleb's mother.
- Sensitive Guy and Manly Man: The Manly Man to both Blunk and Matt's Sensitive Guy.
- Snark Knight: Snark at his friends and will always protect them.
- The Team Normal: In the show. In the comics, he is actually a Murmurer.
- Weak, but Skilled: At least compared to the magic users. He is very athletic and skilled with weapons.
Yan Lin
Voiced by: Lauren Tom
Hay Lin's grandmother, the previous Guardian of Air, and mentor-like figure to the new Guardians.
- Adaptation Dye-Job: White-haired in the comics but black-haired in the cartoon.
- Age Lift: Visibly younger and more spry in the cartoon series. The comic has her as a white-haired and somewhat frail old lady, who dies in the second issue, and afterwards takes on a sort of Spirit Advisor role.
- Big Eater: Played With in "S is for Self" during the double date after Hay Lin eats 42 Moo shus, she refers to it as "Child's Play" and pats her belly, implying she ate much more (though she never specifies how many she had).
- Eccentric Mentor: In the cartoon series. Her comic counterpart is a little less quirky, but still has a certain twinkle in her eyes.
- Incorruptible Pure Pureness: Unlike the other former Guardians of C.H.Y.K.N., Yan Lin shows herself completely unresponsive to any of Nerissa's attempts to get her on her side, no matter what Nerissa tries to do. Nerissa even outright calls her "incorruptible". Which prompts Nerissa to imprison her in the Seal of Nerissa and create an Altermere duplicate of Yan Lin whom she can blackmail with the threat of re-absorption to serve as the Air Guardian on her evil team instead.
- The Mentor: The main one for the Guardians as she gives them advice through stories and was the first to inform them of their destiny.
- Secret-Keeper: The only adult of the girls' families to know their secret.
- Spared by the Adaptation: A strange version; in the comic she dies of natural causes in the second issue, though her spirit lives on in Kandrakar, where she continues to guide the girls from afar and eventually, after having spent some time as the Oracle's closest advisor, becomes the new Oracle. In the animated series, she's notably younger-looking, does not die, and remains active in Heatherfield as The Mentor and Secret-Keeper for the girls throughout the series.
Blunk
Voiced by: Steve Blum
A "passling" (a smelly, goblin-like creature with the uncanny ability to sniff out portals between worlds) native to Meridian. He's a smuggler by trade, though he prefers being called a "trader" or "businessman."
- All Animals Are Dogs: Chris has often confused Blunk as being a dog. He even pretends to be one in "C is for Changes".
- Annoying Younger Sibling: He's kind of like a little brother to his friends. And despite him being annoying, they love Blunk dearly. The episode "G is for Garbage" features Irma coming to appreciate him after seeing him as the titular garbage.
- Canon Foreigner: He's original to the cartoon.
- Character Development: At the beginning of the series he's a bit of a Dirty Coward who only looks out for himself and frequently becomes The Load. He gets better over she course of season one; not only does he becomes far more loyal and brave, but he also begins pulling his weight a lot more. In season two he's become downright useful to have around. In addition, he has a poignant moment where Caleb offers to sacrifice his life so Blunk can deliver a message to the Guardians. Blunk says "NO!" because Caleb's life is too precious to him.
- Chekhov's Gun: Specifically in "I is for Illusion".
- Cowardly Lion: Loses the cowardly part over time and doesn't blink in the eyes of danger. Sometimes.
- Crouching Moron, Hidden Badass: Usually he's not much use in a fight, but he's surprisingly resourceful when he needs to be, and on occasion even gets a genuine awesome moment."Blunk not scavenger — Blunk warrior!"
- Disappeared Dad: What happened to Blunk's father?
- Dork Knight: Almost to the same extent as Hay Lin.
- Extreme Omnivore: There's little he won't eat if he can keep it down, ex. tea bags found in the trash.
- The Friend Nobody Likes: Caleb and the Guardians do care for Blunk but his thievery and bad odor make him very difficult to tolerate.
- Heterosexual Life-Partners: With Caleb.
- Insistent Terminology: Insists he's a "discount importer" rather than a smuggler. Even to Cedric in his snake form!
- Mistaken Identity: In "The Stolen Heart", the girls thought that Blunk stole the Heart, but it was actually his evil, nasty cousin, Jeek. They all apologize to him at the end.
- Momma's Boy: Loves his momma.
- Nice Guy: Blunk is really a brave, loyal, and polite little guy.
- The Nicknamer: Will is "Leader Girl", Irma is "Funny Girl", Taranee is "Brainy Girl", Cornelia is "Blondie Girl", Hay Lin is "Smiley Girl", and Caleb is usually referred to as "Best Friend Caleb" (or collectively with Matt as "Hero Boys" in "D is for Dangerous").
- The Nose Knows: Probably his biggest contribution to the cause is his ability to track people and portals by smell, even garnering the name "bloodhound" at one point. It's a trait of his people (hence passlings, able to sniff out passes between dimensions), which is ironic because they all have awful body order.
- Our Goblins Are Different: They are called Passlings, and they travel through the dimensions looking for goods to sell.
- The Pig-Pen: Has traces of this; he hates taking baths and is never happier than when collecting garbage. He freaked out when he accidentally got cleaned up during a car wash.
- Plucky Comic Relief: His main role in the show.
- Sensitive Guy and Manly Man: The Sensitive Guy to Caleb's Manly Man.
- Sidekick Creature Nuisance: The only one who doesn't find him annoying seems to be Hay Lin.
- Undying Loyalty: To the girls and Caleb, and pretty much everyone whom he befriends with them.
- Vitriolic Best Buds:
- Has this dynamic with Caleb for a while (type 1), but Caleb warms to him over the course of the series.
- He seems to have a weird friendship with Irma in "O is for Obedience."
- You No Take Candle: Just like all the other "passlings", he speaks in broken language and refers to himself in the third person.
The Oracle
Voiced by: Michael Gough
The head of the Council of Kandrakar.
- Demoted to Extra: In the animated series, he has a much smaller role and doesn't even meet the Guardians face-to-face until the second season, probably because Yan Lin is at hand to explain things.
- Distressed Dude: Spends a lot of Season 2 along with Tibor trapped in an energy field created by Nerissa. It's not until the final episode they are freed.
- Everyone Calls Him "Barkeep": Only known as "the Oracle" so far. In the comics, his given name is eventually established to be Himerish.
- Pretty Boy: According to Yan Lin who refers to him as the "cute one" when W.I.T.C.H first meets him.
Matthew "Matt" Olsen / Shagon, Angel of Malice
Voiced by: Jason Marsden
Will's love interest, and later, boyfriend. He is singer and guitarist of his own band, Wreck-55. Also Shagon the Angel of Malice, formerly of Nerissa's Knights of Destruction.
- Adaptational Badass: The comics makes Matt out to be The Obi-Wannabe. In the cartoon, Matt is a normal guitarist who, after getting fed up with Will ditching him on dates, decides to find out what the hell was going on. After finding out her double life, he decides he isn't going to stand there and let her get hurt all the time. Not only does he take combat lessons from Caleb, he also gains a massive power boost when he's forced to take up a fraction of the Heart of Earth, putting him at equal footing of Will herself!
- Adaptation Dye-Job: In the comics Matt had grayish-brown hair. Matt in the cartoon has bluish black hair. He also lacks a goatee in the cartoon.
- Adaptational Mundanity: In the comics, Matt was originally from Kandrakar and fully aware of the girls' double life, having been sent by the Oracle to be a Stealth Mentor before becoming their mentor outright as The Obi-Wannabe. Here, he's an entirely normal teenager from Earth for the most part, only getting involved with the magical after he is turned into Shagon.
- Adaptational Name Change: The cartoon changed the name of his band from Cobalt Blue to Wreck-55.
- Age Lift: Matt is explicitly older than the girls in the comics, being a high school senior and having a part-time job while Will is still in middle school. In the show, he and Will are classmates and closer in age to each other.
- Battle Couple: Lampshaded by Matt himself when he revealed himself as a new Shagon to Will.
- Benevolent Boss: Even as Shagon, he visibly cares for his teammates and doesn’t hesitate to rush in to their aid.
- Brainwashed and Crazy: In Season 2, where he becomes Nerissa's Dragon and assumes the identity of Shagon.
- Chick Magnet: Both Will and Sondra fighting over him. With a ski duel of sorts.
- Cincinnatus: For Lillian. He's her regent up until she's old enough to have a grasp of her powers.
- Composite Character: Shagon was a hapless man completely unrelated to Matt in the comics.
- Dark Is Evil: Shagon has black wings, dark almost snake-like hair, a reptilian tail, and a creepy-looking golden mask. He is also called "The Angel of Malice" and is very much evil.
- Dark Is Not Evil: Becomes this trope after Lillian grants him the power to transform into Shagon at will and fight alongside the Guardians.
- Don't You Dare Pity Me!: Shagon to Will. Especially since not hating him makes him weaker.
- Dreadlock Rasta: When he turns to Shagon mode.
- Emotion Eater: As the evil Shagon, he fed on the hatred in his enemies' hearts to grow stronger. He made Will think he'd done something to Matt to make her hate him more and more. Averted after he becomes Shagon again through Lillian's power, as he tells the Guardians he's now powered by the Heart of Earth instead of people's hate.
- Eye Beams: Shagon's primary method of attack.
- Fighting from the Inside: To free himself from Nerissa, Matt has to battle Shagon in his own mind. Not only does he win, but he briefly takes Shagon's powers for his own before Nerissa re-absorbs all the Knights of Destruction's energies to restore CHKYN.
- Friend to All Living Things: Judging by his friendship with Mr. Huggles and working part-time at his grandfather's pet shop.
- Good Wings, Evil Wings: Played straight and then averted. Shagon has black feathered wings and is a villain who runs on hate. When Matt regains his Shagon powers, he still retains Shagon's look but is clearly in control of the powers and is still a good guy.
- Green and Mean: Shagon is a villain that shoots green eye beams and wears a green vest. This gets averted when Matt gains the ability to take this form without Nerissa's influence.
- Large Ham: Occasionally as Shagon."I am getting VERY FRUSTRATED!
- Malevolent Masked Man: Shagon has a creepy-looking golden mask and is a bad guy. Averted later when Matt gains control of the Shagon form.
- Nice Guy: As he got more characterization, Matt is shown to be a caring and thoughtful person.
- Painful Transformation: Even after Shagon becomes Matt's alternate form again via Lillian-power, Matt's transformation into him still looks like it hurts.
- The Power of Hate: What initially made Shagon strong. The more you hate him, the stronger he gets. In "U is for Undivided", this gets replaced with Lillian's Heart of Earth power.
- The Power of Rock: His "right weapon" against Shagon in his inner mindscape is a guitar.
- Secret-Keeper: Keeps the Will's double life as a Guardian a secret.
- Sensitive Guy and Manly Man: The Sensitive Guy to Caleb's Manly Man.
- Teach Me How To Fight: Asks this of Caleb in "D is for Dangerous", in exchange for teaching Caleb how to fit in at Sheffield Institute, because he wants to be able to fight along with Will and also is afraid she won't want an ordinary boyfriend. Instant Expert is averted, but Caleb's lessons do have an impact as he's seen being better at it in subsequent episodes.
- Understanding Boyfriend: Once he learns about the Guardians, he takes it remarkably well. Seriously, after just learning his girlfriend's secret on the first day that they're officially dating, by following her through a portal to another world, Matt is surprisingly okay with her being a Magical Girl Warrior. Although that may have something to do with Will's Sexier Alter Ego body.
- Winged Humanoid: As Shagon.
Vathek
Voiced by: Lloyd Sherr
Caleb's second in command.
- Adaptational Heroism: He's a hero from the start in the show, whereas he was a villain who underwent a Heel–Face Turn in the comics.
- The Bait: In season 2's "B is for Betrayal," he realizes the remains of Phobos's army want to hunt down those who betrayed them. Vathek offers himself up as bait so the Guardians can catch the trio.
Julian
Voiced by: Loren Lester
Caleb's father. Only appears in the cartoon adaptation.
- Action Dad: Actively involved in the rebellion alongside his son. He's actually the only parent on the show (for good reason) to be aware of the danger the teenagers are in, and one of the few adults who routinely helps them out.
- Amazingly Embarrassing Parents: Maybe not as bad as others, but he doesn't mind giving his son a hard time in public about his feelings for Cornelia.
- Bed Trick: He thought Nerissa was the Mage when he slept with her, thus making their relationship non-consensual and Caleb the product of rape. Yeesh!
- Canon Foreigner: In the comics, Caleb was a rebellious creation of Phobos's, originally made from plant life, so he had no parents and Julian didn't exist.
- Disappeared Dad: Turns up part of the way through season 1, having been held captive in the Underwater Mines.
- Good Parents: Oddly combined with Parents as People, as Julian clearly had an interesting life before Caleb was born, and he has not always been present during his son's life.
- Lies to Children: Word of God from Greg Weisman says that Caleb asked Julian about his mother in the past and what Julian told him was "not the truth". In the same interview, Weisman explains that Julian lied so that no one could hurt Caleb to get to "the Mage", making this justifiable.
- Papa Wolf: Even if his son is the leader of the rebellion. And even if the person he is defending him against is Caleb's mother. If you watch in "Y is for Yield," someone charges at Caleb during the battle only to be knocked aside by Julian.
Aldarn
Voiced by: Dee Bradley Baker
Caleb's best friend, and a member of the rebellion.
- The Blacksmith: Since he is not a known rebel, he works as one with his father.
- Brainwashed and Crazy: By Elyon in one episode, though by accident.
- Canon Foreigner: He's exclusive to the cartoon.
- Fighting Your Friend: Challenges Caleb to a leadership challenge after Elyon unwittingly hypnotizes him into wanting peace with Phobos.
- Heterosexual Life-Partners: With Caleb.
- Number Two: Runs the rebellion when the Underground City is under attack.
- Red Oni, Blue Oni: Implied to the be the blue to Caleb's red.
- The Lancer: One for Caleb within the rebellion.
- Totally Radical: When he's told by Caleb in an early episode that Earth kids use the word "like" in the middle of their sentences a lot, he tries to communicate to Cornelia like this when he first meets her, only to receive a confused "What?" for his efforts.
Mr. Huggles / Khor, the Destroyer
Matt's pet dormouse. Also Khor the Destroyer, formerly of Nerissa's Knights of Destruction.
- Action Pet: Only in the cartoon.
- Adaptational Badass: The comics only has him as a pet dormouse. The cartoon gave him status as a Team Pet who can willfully change into a stronger, more intimidating version of himself.
- Adaptation Dye-Job: Brown in the comics, grey in the cartoon.
- Adaptation Name Change: Went from Dormouse in the comics to Mr. Huggles in the cartoon.
- Ascended Extra: He dies in the third saga of the comics. Becomes an important character in the second season of the cartoon.
- Brainwashed and Crazy: Only in the TV series, in the 2nd season.
- Close-Range Combatant: The only one of the Knights of Destruction without any wings or long-range attacks.
- Composite Character: In the comics, the creature that was turned into Khor the Destroyer was a dog named Miska who had the misfortune of crossing paths with Nerissa.
- Emotion Eater: As Khor the Destroyer, he fed on his enemies' anger. In the first battle with the Guardians he fed on Taranee's anger towards her mother for not being accepting of Nigel. In a later episode, he fed on her anger over Nerissa and the Knights framing the Guardians for attacking Zamballa. Averted after he becomes Khor again through Lillian's power.
- Evil-Detecting Dog: A mouse variant. He was the only one that could tell when Nerissa was pretending to be someone else.
- Spared by the Adaptation: He died in the comics. He becomes a Regent of Earth with Matt and Napoleon in the TV series.
- Team Pet: Especially after "U is for Undivided".
The Mage
Voiced by: B. J. Ward
A mysterious sorceress who guards the Infinite City and provides the heroes advice in magical problems.
- Bald Mystic: She's a bald sorceress.
- Canon Foreigner: She's exclusive to the cartoon.
- Dead All Along: It's revealed half-way the second season that the heroes have never been interacting with the real Mage during the cartoon; she died before Caleb's birth and has been impersonated by Nerissa ever since.
- Everyone Calls Him "Barkeep": Her real name is never revealed. Not the real deal's, that is.
- Facial Markings: She has on her pale face what appears to be green tattoos.
- In the Hood: She often wears a hood to enforce her image as a mystic.
- Mystical White Hair: When a younger Mage is shown in flashbacks, she has long white hair.
- No Good Deed Goes Unpunished: After Nerissa managed to escape her prison in Mount Thanos, she was taken in by the real Mage who wanted to help the former Guardian reform. It only led to Nerissa stealing her identity (possibly through murder) and using her resources in her world-domination plans.Nerissa: She wanted to… "save" me. Wanted me to see the bigger picture, which I did… to her regret.
- Ring of Power: She owns a ring that can open folds to travel between worlds.
- Time Abyss: She looks old, but it's left vague how long she has existed. She's shown to be the creator of the Star of Threbe, which Phobos claims to have been lost for a thousand years. While taking over the rebels' former base at the Infinite City, which has existed for at least four millennia without anyone knowing who built it, Cedric calls the Mage "the last vestige of the ancient empire".
Cassidy
Voiced by: Susan Chesler
The previous Guardian of Water who was killed four decades earlier by Nerissa.
- Back from the Dead: Nerissa brings her ghost to the mortal realm with the intention of resurrecting her. It eventually comes to pass once Nerissa has amassed enough power to return her former team to their Guardian forms. Cassidy afterwards remains alive and reunites with her old mother.
- Cute Ghost Girl: A sweet girl whose life was tragically ended too early. Notably, she has accepted being dead, until discovering her blind mother to be still alive gives her the motivation to live again.
- Deadpan Snarker: Much like her successor Irma, she's very sassy.
- Fatal Flaw: She successfully resists Nerissa's attempts to goad her into a Deal with the Devil until she sees her beloved mother alive, blinded and keeping up her daughter's memory.Nerissa: Just show some mercy to your mother, and say the words. Say you want to live.
Cassidy: I want… to live!
Nerissa: Compassion is a powerful thing, especially when it fuels desire. The desire for something you cannot, should not have, is the chink in the armor of your soul and all I need to make you mine! You will live again very soon… once your service to me is complete. - Friend to All Children: Before being killed, she dreamed of becoming a pediatrician.
- Friendly Ghost: Before she gets brainwashed by Nerissa, she's rather friendly with the latter and says she's doesn't bear a grudge over her death. However, she's well aware Nerissa didn't summon her for altruistic reasons and attempts to resist Nerissa's manipulations by asking to be allowed to rest in peace.
- Nice Girl: As Nerissa states to Cassidy's ghost, she has a lot of compassion to every living thing.
- Youthful Freckles: She died very young, and she has freckles to emphasize that.
Halinor
Voiced by: B. J. Ward
The previous Guardian of Fire who's now a member of the Council of Kandrakar.
- Adaptational Job Change: After Halinor stopped being a Guardian in the comics continuity, she and Kadma founded a children's aid organization called the Rising Star Foundation, which Kadma took over following Halinor's death. In the cartoon, she's a sage of Kandrakar instead.
- Cowardly Lion: Deconstructed. Though a well-meaning and experienced ex-Guardian, her fear can be used to tempt her into resorting to questionable methods to protect everyone, such as robbing the current Guardians of their powers and using them herself as a Quinto-Guardian.
- Fatal Flaw: Fear. When the Knights of Destruction assault Kandrakar, Halinor (whose fear gives Tridart extra power) is convinced with some prodding from Nerissa that the Guardians aren't at the time experienced and harmonious enough to defend the fortress, so Halinor resorts to trying to drain the girls' powers into herself and fend off the Knights herself as a Quinto-Guardian. This is what enables Nerissa to enthrall her.Nerissa: So, you steal their magic in the midst of a dire battle? Hmm. Fear is a powerful thing, especially when it fuels betrayal. The need to do anything, no matter how treasonous, to smother the burning flame of your own fear, is the chink in the armor of your soul. And all I need to make you mine.
- Spared by the Adaptation: She's very much alive in the cartoon, unlike in the comics were she died before the W.I.T.C.H. became new Guardians.
- Technicolor Fire: The flames she creates with her fire powers are green.
Kadma
Voiced by: C.C.H. Pounder
The previous Guardian of Earth who's now the queen of Zamballa and the bearer of its Heart.
- Adaptational Badass: In the comics, she's a Retired Badass who has left action behind her, but in the cartoon, she's a force to be reckoned with thanks to the Heart of Zamballa making her able to make full use of her Earth powers from her Guardian days.
- Adaptational Job Change: In the comics, she's (alongside Halinor) the founder and head of a children's aid organization called the Rising Star Foundation. In the cartoon, she's the queen of the planet of Zamballa.
- Braids of Action: She's a magical warrior queen with a long braid.
- Good Is Not Nice: She's dedicated to protecting her subjects, but she's overconfident and unwilling to admit her faults. She's also willing to have the Heart of Meridian absorbed into the Heart of Kandrakar or Zamballa rather than let Elyon keep it, convinced it could better serve good purposes that way.
- Lethal Chef: Yan Lin says in "Q is for Quarry" that while Kadma is a wonderful hostess, she can't cook beans at all.
- Pride: Her problem with owning up to her mistakes is her Fatal Flaw. Nerissa lampshades it when she enthralls Kadma after intentionally losing several fights against her to make her bold enough to try to steal the Heart of Meridian from Nerissa. After being freed from Nerissa's control, Kadma is so marked by the experience that she abdicates Zamballa's throne and Heart to Ironwood in order to retire to a more humble life on Earth.Nerissa: Impressive. Your pride, that is. An arrogance that convinced you that no power, no matter how awesome, was beyond your control. It is the chink in the armor of your soul, Kadma… and all I need to make you mine! I promise you more power than you have ever known, Kadma, but you will use that power… for me.
- Purple Is Powerful: As Zamballa's queen, she wears purple clothes, and she wields the purple Heart of Zamballa.
- Royals Who Actually Do Something: She actively takes part in protecting her kingdom with her powers.
- The Unapologetic: She wrongfully imprisons the Guardians and Yan Lin after being deceived by Nerissa into thinking they're attacking Zamballa, but after the ruse is exposed and the Guardians help her fight off the bad guys and save her subjects, she doesn't apologize to them, much to Taranee's ire. Yan Lin explains that's Kadma's protective armor: if she doesn't admit to her mistakes, she can pretend they never happened.
- Ungrateful Bitch: Not only she's The Unapologetic in her debut episode, but she also doesn't thank the Guardians for helping rescue her and her subjects from Nerissa and the Knights of Destruction.
