* In Z is for Zenith, I was already given a moment to swoon over [[Creator/JasonMarsden Matt]]'s sexy, enraged delivery of "Why can't they come back?!" when the girls have transformed into their elemental forms. Upon further consideration though, I realized that among other things, Matt's rage was entirely justified not only because his beloved girlfriend was turned into a corporeal mass of lightning along with her friends, but because the entire situation happened at Nerissa's suggestion. From her fantasy inside the crystal, it was clear she'd intended to once again use people, against their will to further her plans. Matt, who'd already been made a pawn in her schemes, was probably ready to tear the bitch a new one. Nerissa was pretty lucky she ended up trapped in that crystal after all.
* In the cartoon Phobos fell for Will's plan to make him lose the powers taken from Nerissa by having him swear on the Heart of Kandrakar to not use them for himself and then trick him into walking to Kandrakar in arms, but Cedric saw through it since the beginning. I was just surprised as anyone that Cedric had deduced ''exactly'' what Will's plan was, but then I realized: it's based on an oath. Something that Cedric is an expert of, being the resident ConsummateLiar (the comic book even called him 'The Prince of Lies' in more than one occasion) and a [[WickedCultured book lover]] and oaths are based on the words he's a master of. ''Of course'' he knew exactly what would happen if Phobos swore that oath!
** Phobos took a few moments before swearing that oath. He was ''relying on Cedric'' to warn him if there was any danger. Too bad that Cedric was already plotting against him...
* It is somewhat ironic that the redhead Will Vandom is the leader of a group called WITCH. Back in the middle ages, redheads were often considered witches.
* Why didn't Cornelia object to Will being Elyon' s regent in "Q is for Quarry"? I was expecting her to say she was best suited because she was Elyon' s best friend. But, she made no remark or sarcastic expression at all. Why? Because she remembered her temporary power upgrade in "N is for Narcissist". She didn't say anything because she knew that it would probably sound hypocritical. And she was also hoping that Will might've also remembered the incident.
* The Oracle might choose a Guardian based on their magical lineage based on the five elements. Hay Lin is the granddaughter of the previous Air Guardian and Cornelia is the [[spoiler: older sister of the Heart of Earth.]]
* Cartoon-verse: the reveal in ''O is for Obedience'' that [[spoiler: Julian and the Mage were lovers who had a son (Caleb) together, and then that the Mage was actually Nerissa in disguise.]]
** It began in ''F is for Facades'', when the Mage tells Julian:
--> '''Mage:''' He has a fine father.\\
'''Julian:''' And a fine mother as well.\\
''*cue the two of them smiling at each other*''
** And then, in ''N is for Narcissist'', when Luba reveals that the Mage was not the Mage at all, there is a close-up to Julian's downcast face.
** Nerissa also locks [[spoiler: Caleb]] in a lightning cage during the fight in "K is for Knowledge." [[spoiler: She was trying to keep him safe.]]
** In "A is for Anonymous," Caleb specifically thanks [[spoiler: Trill]] for her help with the rebellion. [[spoiler: Trill was another of Nerissa's identities.]]
* Cartoon-verse: Will was one that gave Napoleon (the Hale's pet cat) to Lillian. A few episodes later, it was revealed that [[spoiler: Lillian is the Heart of Earth and Napoleon is her {{Familiar}}. Will, the leader of WITCH brought Naploen to Lillian, who is technically a witch herself.]]
* In "J is for Jewel", Phobos referred to Hay Lin as the "weakest link". At first I though he was just being his usual {{Jerkass}} self and was attempting to [[BreakTheCutie crush Hay Lin's spirits]], but then I later on realized what he meant: Hay Lin is the Guardian of Air, and the element of air is considered the weakest of all five elements. So, that's what Phobos actually meant.
* At the end of the comic book, the Guardians receives another power up that includes increases senses: Will can see everything she wants, Hay Lin can hear anything, etc. Thing is, these ''are the same power of the Oracle'' divided among them.
* At face value the cartoon doesn't have the subplot about Will fearing to become like Nerissa. Then I remembered that at the end of the second season she proves herself a capable {{Chessmaster}} (that is, ''Nerissa's greatest strength''), but, differently from her, she enlists her friends' help for her manipulations.. That's why the cartoon lacks the subplot: Will got over that fear faster than in the comics, as her friendship with the other Guardians was deep enough she trusts them to stop her, while in the comic book she couldn't bring herself to trust them so much until with her confrontation with [[spoiler: [[GrandTheftMe Phobos in Endarno's body]]]] in the fourth story arc.
* In the fourth arc of the comics [[spoiler: Phobos]] showed Will a future where her friends eventually left her because they were sick of hanging out with her. That was exactly what happened with her friends in Fadden Hills so that would be her biggest fear.
* The ages of W.I.T.C.H. parallels the strength of their element: Will is the oldest and has the most powerful element. Cornelia is the second oldest and thus has the second most powerful element. Vice-versa with Irma, Taranee, and Hay Lin.
** Taranee, Irma and Hay Lin match up well with their powers based on personality. Taranee is fairly timid and initially terrified of her power, Fire, which can be the most destructive element in the wrong hands. Irma lets her surroundings shape her but always keeps a core of her true self, much like how water changes shape based on its container but keeps its volume regardless. The energetic and imaginative Hay Lin is able to use her Air/Wind powers to their fullest.
** To be honest, though, the ages of the girls are interchangeable. Whoever said that from oldest to youngest is W-C-I-T-H, that's the first time I've heard someone say that. From oldest to youngest in the Comics it's C-W-I-T-H. In the Cartoon, from oldest to youngest it's C-I-T-W-H.
* In the comic, Cornelia at first isn't too willing to accept Will's leadership, and made a few attempts at taking over. Before they became the Guardians of Kandrakar, the group's leader was Cornelia herself, and Will was literally the last one arrived (Taranee had arrived at the school the previous day).
* On the Guardian outfits:
** The original Guardian outfits of both W.I.T.C.H. and C.H.Y.K.N. are [[CustomUniformOfSexy sexy]] and [[BareYourMidriff show the midriff]], while the outfits of the ancient human generation of Guardians (only shown in a flashback]] are feminine ''[[https://en.wikipedia.org/wiki/Hanfu hanfu]]''. Both W.I.T.C.H. and C.H.Y.K.N. are American teenagers of the 20th century (late 20th for W.I.T.C.H., mid 20th for C.H.Y.K.N.), they'd want something sexy and somewhat rebellious, while the ancient human generation were Chinese teens or women of thousands of years ago, and dressed as such.
** By the time of the New Power saga the outfits of W.I.T.C.H. changed because ''they'' changed, and thus evolved with them.
** Taranee's New Power outfit is the only one that still shows the midriff. While the others (and especially Will) have outgrown their rebellious phase by the New Power saga, Taranee only does ''during'' the saga, after she got the new outfit (and her hair got crazier).
** Hay Lin's of Chinese descent like the ancient human Guardians, but her outfits resemble the {{Qipao}} while the ancient Guardians wore ''hanfu''. The ''hanfu'' is the traditional Han Chinese wear, and the feminine version was supplanted by the qipao (of Manchu origin) only in the 20th century.
** Yan Lin's Guardian outfit is modeled on the ''[[https://en.wikipedia.org/wiki/Tangzhuang tangzhuang]]''-pants outfit, that was originally man wear but has since grown to be worn by both genders. Back in her day, women in China were still relatively kept in traditional roles, so to fight (a traditional man's role) she gets in "men"'s clothes.

* In the comic the 'elemental' power of the Keeper originates from bonds, and manifests as energy blasts. It doesn't seem dangerous... Until you bring this notion to the logical extreme: the Keeper of the Heart has ''absolute power over the bonds of matter and energy''. With enough control she could produce a lot of gold out of thin air, disrupting world economy, produce weapon-grade uranium out of anything, make things explode, or make ''anything'' disappear! Thankfully Will doesn't seem inclined, even if she has realized it during the New Power arc... But Nerissa not only ''was'' inclined, she already ''did it to Cassidy''! All of sudden the utter terror everyone in Kandrakar had of her and the notion that its walls would be useless against Nerissa when they did hold back Will and her group make an horrible sense...
* Did Tony Vandom (in the cartoons) send his daughter a birthday card or even call her in the episode "Happy Birthday, Will"? Susan did reveal that he disappeared for months. So the possibility is there.
** Since the Tony in the show isn't a {{Jerkass}} like he was in the comics, a question remains: Why did he disappear for months?
*** Who's to say he isn't? He seemed to be encouraging Will to shun her responsibilities in "N is for Narcissist." Maybe he's trying to appear more amiable than Susan so he convince Will to go along with whatever he recommends?
* When Will was kidnapped by Phobos and not rescued by the others until the next day, was Susan Vandom [[AdultFear freaking out because her daughter didn't come home]]?
* In the comics it's implied Nerissa was "destined" to be corrupted BY the Heart of Kandrakhar. Will worries that she herself may become corrupted several times. If [[BecauseDestinySaysSo destiny says so]], then who's to say she won't be?
** It wasn't that Nerissa was destined per se, but that Keepers of the Heart have to be more careful to not be corrupted by the absolute power that the Heart entails. Nerissa's heart wasn't strong enough, Will's is.
** According to WordOfGod, Nerissa was originally a worthy keeper but something in their last battle weakened her bond with the other Guardians and increased her ambition too much, resulting in the Oracle trying (and failing) to stop her corruption as we know. The CHYKN spin-off was ultimately shelved so we don't know what happened, but yes, Nerissa was not destined to be corrupted... And Will, in the fourth arc, showed her heart was indeed stronger than Nerissa's.

* Nerissa gives a few hints to Julian [[spoiler: about having posed as the Mage]], and he promptly goes to the Falls, to look for a grave there. Which means that he already knew there was a grave there? How could he not suspect anything, then?
** She says to him, "Remember Magenzian Falls?" The flashback showed that that was a place they had gone together before; she sent him there to find the grave so he could figure out what happened.
* Cassidy is BackFromTheDead, and reunited with her mother, but she's the twentysomething she was when she died, now. How does that work? Yan Lin's clone aged to match Yan Lin's age, Cassidy did not. Is she going to tell people she found the fountain of youth now?
** The aging thing might be different because Mira (Yan Lin's clone) was originally an Astral Drop, but Cassidy wasn't.
** She's probably going to claim to be a relative that "kinda" looks like Cassidy.
** Cassidy didn't age because that's the age she was when Nerissa brought her back to life. There's no reason why she ''would'' age.