Ascended Fangirl: Ingrid has been a "Guardian Groupie" her entire life, due to her mother and aunts telling her stories about their exploits. She even decorated her room in Guardian colors of green and purple. Nestis also heard stories about Guardians from her father and loved them, but thought they were only legends.
Badass Bookworm: Jamila, just like her predecessor Taranee. Nola also qualifies.
Badass Longcoat: The story behind Ingrid's is explained in a "A Coat Is A Coat." She also has one in Guardian form that's Guardian green.
Other original characters from other FF.net authors make appearances (with permission and credit given in their intro chapters.)
Dangerous Sixteenth Birthday: Guardians usually don't see actual combat before their sixteenth birthdays after years of training. Because of Elyon's presence in Heatherfield W.I.T.C.H. did not have this luxury, but ultimately became the strongest Guardians in Candracar's history because of this.
Dark and Troubled Past: Dee's is a major part of her character and other characters have their own painful histories to deal with, including Jamila, Nestis, Belantha and Will.
The Dragon: Selene, who is implied to be related to the original dragon, Cedric.
Due to the Dead: Ingrid and any old members of the rebellion during Phobos' reign wear a red bandanna on their left arm to honor those who fought. Ingrid keeps the bandanna in Guardian form, just changing the color to purple. Not a Red Armband of Leadership.
Embarrassing First Name: Dee hates being called being Diana, the reason being it doesn't sound like the kind of name a girl like her should have (in her opinion, anyway.) Ironically, everyone else seems to love it.
Ethical Slut: Belantha has no problem sleeping with married people...as long as both spouses are "involved." She also draws the line at age of consent.
The Chick: Nestis is quite shy and insecure about her hair and biracial status. Powers: Air
Fourth Wall Mail Slot: In one of the Fanfiction.net forums, you could have a short Q&A session with the cast, though this was erased some time ago.
Fair Cop: Irma joined the police force like her father before her. Dee lampshades this during their first meeting.
The Federation: The League of Worlds ("L.O.W.") is a confederation of worlds formed by allies of W.I.T.C.H. to fight an interdimensional war. After it was won the League stayed together and proved so effective at countering threats that W.I.T.C.H. was able to retire much earlier than most Guardian teams.
Four Girl Ensemble: Played with. Dee and Ingrid are the mannish snarkers, but Ingrid is also the sexy one and Team Mom while Dee is the Wild Card and Team Dad. Nestis is the sweet girl but is just as smart as the others. Nola is considered the prettiest but is also intelligent. Jamila is the The Smart Guy but also as fashionable as Nola.
Fun with Acronyms: Played Straight with all three generations of Guardians: CHYKN, WITCH and DJINN. Hay Lin even thinks up DJINN's acronym like she did with their predecessors as a nod to the television series and comic. There's also an interdimensional organization called the League of Worlds (L.O.W.)
Heroic Bastard: Literally Ingrid who was 3 when her parents finally wed. She plays it off nonchalantly stating:
Will herself. Susan was pregant with her when she married her father, partially due to Will but also because Tony wanted to marry her regardless. Will isn't upset by this in the least, either.
Honorary Uncle: Ingrid with all of WITCH, plus Aunt Elyon, Uncle Aldarn, Aunt Orube, "Unka Blunk"... add in the crossover factor and Ingrid has more Honorary Aunts and Uncles than most people have biological relatives, ex. "Uncle Danny."
Huge School Girl: Ingrid is a head taller than the other girls. Transformed Ingrid turns this up to 11 being 6 foot 8 inches towering over her own father.
I Am Not Pretty: Zigzagged with Dee, who agrees she makes for a cute boy, but does not think she is pretty as a girl due to her self-image issues.
There's also the added deterrent of her foster father trying to molest her the last time she tried to look feminine.
Ingrid's Dad: Jamila has had a major crush on Caleb for years. No one, including Jamila, believes she has any chance with him since he's Happily Married and has no clue his daughter's friend is interested in him.
In the Blood: Discussed in regards to Ingrid's relation to Nerissa.
Lethal Chef: Will's lasagna is considered a bio-hazard. It crunches. The fact that Dee has no problems eating it amazes her friends.
Will claims her mother isn't any better though that might be sour grapes given the relatively tasty spread set out during Dee's visit.
Likes Older Women: Maqi about Elyon, despite Elyon only having four years on him. Imran also has no problem flirting with older women (or men, for that matter.) Jamila's crush on Caleb, of course, and Ingrid says that many girls at her school have crushes on him.
Meaningful Name: Explained in one of the chapters on how the author came up with the names.
Mixed Ancestry: Most of DJINN, actually. Nestis is the most obvious with a Native American father and Caucasian mother while Jamila is Middle Eastern/Chinese, though it's not as a apparent. Ingrid's father came from another planet but she can pass as a slightly tan Caucasian. Dee is Ambiguously Brown, possibly Hispanic, and her and Nola's origins are unknown before they were found as babies.
Most Common Super Power: While not as big when in "civilian mode", like their predecessors, this is the first thing they notice when transformed. Nestis, ironically, has this trope the most.
Multicolored Hair: Nestis has brown streaks in her platinum blond hair. Despite her insecurity about this, everyone else likes the look (except for Synthia, that's because she's an Alpha Bitch. As well as a bitch period). Ingrid has Nola use her powers to make her hair rainbow-colored at the sleepover and decides to keep it for a while.
The Obi-Wan: Both former groups of Guardians help out with the girls, each specifically tutoring the girl with their element.
Official Couple: Played straight and subverted. Caleb and Cornelia are married and Hay Lin and Eric engaged; however Matt and Will are, at the moment, split up. Word of God said this is because one of his reviewers asked why should the girls stay with their boyfriends at the junior high level. Irma and Martin are also married, though they're only teased at on the show.
Older than They Look: Dee thinks Susan looks too young to be a grandmother, greatly endearing herself to the woman.
Old Super Hero: WITCH and CHYKN, especially for CHYKN. The two older generations take an active role in mentoring DJINN, however.
One-Letter Name: While more of phonetic nickname than just being a single letter, Dee and Will's sister Bee ("Beatrice") prefer the shortened version of their names. See below.
Only Known by Their Nickname: Despite her true name Diana she insists on being addressed as Dee. Nola, however, refuses to do so due to her noble upbringing. It sparks discussions as famous as the "Don't call me Corny." of old.
Original Character: Many, since the story is a Continuation. Notable examples are Belantha (who appeared in an earlier story of the author's) and her son Imran, D.J.I.N.N. themselves and Will's younger sister Beatrice as well as some (credited) cameos from other authors.
Papa Wolf: According to Caleb, Imran is not allowed anywhere near Ingrid or even his Honorary Niece Nola; not even the same dimension if he can help it. Elyon tells him he's over-reacting, but it doesn't take.
Parental Abandonment: A surprising amount of it in contrast to the nuclear families of W.I.T.C.H. With Cornelia being a supermodel and Caleb being Captain of the Guard in Meridian, Ingrid was raised by the other girls and has a hard time identifying herself with her parents, especially Cornelia. Dee is implied to have been abandoned at birth. Nola was found by Queen Elyon, what that means is on you. Jamila lost both her parents at an early age and Nestis recently lost her father.
Parental Substitute: In the maternal sense, Will became this to Ingrid due to Cornelia's long absences. Ingrid even admits to Nola that she sees Will as her mother instead of Cornelia.
Police Are Useless: A large part of Dee's problem with Irma is her feelings about this due to her Back Story. It's averted by Irma and her partner who quickly deduce that Will and Dee left Will's apartment and track down where they went (albeit with some help from Irma's Guardian powers).
Qipao: Will wears one of Hay Lin's at the dinner at the Silver Dragon at the latter's insistence, mainly because Will's clothes got trashed the night before but also because Hay Lin thinks she looks good in it.
Spy Speak: The codes for the Hale family voice-activated security system come off as these to those not in the know. "Name: Guardians Unite"="Everything's okay; let me in." while "Name: Phobos" means "Everything's not okay; call Auntie Irma and the cops!"
True Companions: The Guardians are this regardless of which generation, so much so that their get-togethers resemble family reunions. Ingrid immediately proclaims DJINN as her sisters, even though she had only known Dee for an hour at that point.