* ActingForTwo:
** In "Delinquent Justin", DavidHenrie plays ''four'' different versions of himself, two of them at the same time.
** Also, SelenaGomez plays herself and Harper in "Family Game Night". In "Quinceanera", she plays herself, her father and her mother. In "Third Wheel", she plays herself and Justin. So, basically, she played almost every main character, except for Max.
*** Special mention to "Family Game Night" where Alex and Harper's brains are in the same body
*** She also plays Alex's evil side in the new special, ''The Wizards Return: Alex vs. Alex''.
** Jake T. Austin plays Max, Justin and Alex in "Three Maxes And A Little Lady".
** Both David [=DeLuise=] and Maria Canals Barrera play Alex in "Quinceanera".
** JenniferStone plays Alex in "Family Game Night".
** Jennifer Stone also plays Harper twice (often simultaneously) in "[[ExactlyWhatItSaysOnTheTin My Two Harpers]]".
** The actors who play Justin, Max and Zeke play their regular characters, "Cinderella"-versions of their characters and the Three Little Pigs in "Harperella".
* AscendedFanon:
** Fans theorized that Mason would somehow come back at one point, reverting to his human-like form. This turns out to be what the last few episodes of Season 3 revolve around.
** Harper is constantly being written by fans as a girl who has a terrible life at home, and is eventually forced to live with the Russos. In Season 3, she moves in.
** Ever since Zeke's introduction, he was paired with Harper by fans, due to their similar {{Sidekick}} statuses. In recent episodes, they have a love interest growing.
** Many fan stories have been written about Alex fearing Justin leaving for college, and coming up with wacky hijinks to stop him from leaving. In Delinquent Justin, this turns out to be the entire plot, which she has been planning for four years in advance. The entire episode, ''especially'' the end, is a Crowning Moment Of Heartwarming.
** One of the most famous {{fanfic}}s in the Jalex fandom, [[http://www.fanfiction.net/s/4661025/1/In_Fire_In_Ice In Fire, In Ice]], revolves around the government finding out about magic, and [[DarkFic the government hunting down/imprisoning all wizards]], and Justin and Alex going on the run desperately trying to survive. In the Season 3 finale, the government finds out about magic and imprisons the Russos along with numerous other wizards.
*** Of course this was all fake as it was [[spoiler: just a test by Professor Crumbs]].
* ActorAllusion: "Off The Chain" is mentioned by Alex who's actor SelenaGomez has a song called Off The Chain in the episode Eat To The Beat.
* CastIncest: SelenaGomez and DavidHenrie used to be seen going on a few dates, and being much more friendly with each other than they are with rest of the cast members, throughout the course of filming the show.
* EnforcedMethodActing: A lot. The show is filled with improv from the more talented actors, and they just role with it.
* ExecutiveMeddling: Disney is pushing the creators hard for Mason/Alex.
* HeyItsThatGuy: While this is a live-action show, it still feels weird seeing [[MegasXLR Coop]] and [[JusticeLeague Hawkgirl]] as parents to ''these'' kids.
** Don't you mean [[Series/ThirdRockFromTheSun Bug Pollone]]/[[Series/StargateSG1 Pete Shanahan]] as their father?
** Also, Alucard the vampire is [[DissidiaFinalFantasy Kuja!]]
** Don't forget that his wife was [[Series/MadAboutYou Lisa Stemple]] and Juliet was [[{{Jonas}} one of Nick Jonas' 'fall too hard, too fast' crushes]].
** Also, SelenaGomez did a brief stint as Hannah Montana's competitor in ''Series/HannahMontana''.
** Who knew that [[HannahMontana Rico]] would be a good conscience for Max?
** [[GalaxyQuest Tommy Webber]] as a top-secret government scientist.
** [[{{ICarly}} Gibby]] is a Wiz World executive.
** [[GoodLuckCharlie Spencer]] is apparently apart of a snooty, sophisticated group of wizards.
*** And Skylar is the Cucuys' daughter
** {{Shakira}} is actually Uncle Kelbo in disguise.
** T.J. Taylor is a [[SpyKids spy]] and don't forget, a [[GeneratorRex a 15-year old boy who can control nanites and build machines from his body, fighting EVO monsters]].
** Mr. Frenchie is [[WhiteCollar Mozzie]].
** [[TheGeorgeLopezShow Bennie and Ernie]] show up as Theresa's mom and luchador Muy Macho respectively.
** [[ShakeItUp CeCe]] dated Max in one episode.
*** Deuce is Max's conscience's conscience.
** [[WesternAnimation/TheVentureBrothers Doc Venture]] is the father of another of Max's girlfriends.
** The karate instructor from the ''ShakeItUp'' episode "Kick It Up" is the manager of the 13th floor, where Alex and Harper have their apartment. But he turns out to be [[spoiler: Gorog]] in disguise. He also appeared in ''Series/HannahMontana'' as a monotone casting agent.
** The actor who played him in his true form was Linwood Murrow in ''Series/{{Angel}}''.
** Justin himself is actually [[HowIMetYourMother Ted Mosby's son from the future]].
*** And Cory Baxter's best friend Larry in ''ThatsSoRaven''.
** [[That70sShow Fez]] is Uncle Ernesto.
** [[DrakeAndJosh Mrs. Hayfer]] as a [[TheDevilWearsPrada Miranda Priestly]] expy.
** [[RevengeOfTheNerds Booger]] [[CastingGag as the zit in 'Pop Me And We Both Go Down']].
** The Russos and Harper faced off [[LemonadeMouth Stella Yamada]] to save the Wizarding World.
* HeyItsThatVoice:
** CharlieAdler shows up in one episode as a talking report card.
** See above. Again, Coop. And Hawkgirl. Waaaaay out of character.
** [[{{Loveline}} Adam]] [[CrankYankers Carolla]] as Cab 804, the taxi Alex brought to life.
* IronyAsSheIsCast: in "Dancing with Angels", Alex is shown to be a terrible singer.
** SeriesContinuityError: But in "Dude Looks Like Shakira" and "Make It Happen", she sings well.
* NamesTheSame: David DeLuise played a character called Randy in ''Series/{{Blossom}}''. Blossom's last name was Russo. David plays Jerry Russo. Mind=blown.
* RealitySubtext: DavidHenrie (Justin Russo) and SelenaGomez (Alex Russo) liked one another in RealLife (and they probably still do), a fact which affected their characters' relationship to the point where even the fans, the critics and their friends noticed that Justin and Alex acted a little "[[UnresolvedSexualTension strange]]" around each other, especially in TheMovie.
* RetroactiveRecognition:
** Gigi is [[TheNineLivesOfChloeKing Chloe King]].
** Rosie is [[Film/TheHungerGames Glimmer]]
** LucyHale as Miranda, Justin's first girlfriend.
** A lot of future Disney Channel stars appeared on the program. As mentioned above, Creator/BellaThorne was in one episode. Also, BridgitMendler was Juliet, [[Series/ShakeItUp Adam Irigoyen]] was Conscience's conscience, TiffanyThornton was one of Justin's friends in an episode, [[LemonadeMouth Hayley Kiyoko]] played Stella, ChelseaStaub was a love interest for Justin in one episode, ChinaAnneMcClain was Tina the junior Guardian Angel in an episode, and so on.
** Professor Evillini is a [[TheHelp 60s Maid]].
* RomanceOnTheSet: Between DavidHenrie and LucyHale, he asked his girlfriend for couple years to play his love interest on the series, whose weirdly resemble to his on screen sister much.
* TeasingCreator: The creator is known to joke about the Justin/Alex pairing, recently stating that if he ever runs out of ideas, he'll do a ''whole season'' of Jalex-filled episodes.
* ThrowItIn: AllMythsAreTrue, as long as they can be PlayedForLaughs.
* WhatCouldHaveBeen: Had the producers stuck with their original idea of Justin and Alex beings friends not siblings, all of the awkwardness involving the popularity of Jalex could've been avoided. Although there is much debate as to whether they'd still act like the same lovable yet snarky couple, if they weren't related.
** In ''Delinquent Justin'' when Theresa tells Justin and Alex to just say that they love one another (in a non-{{Squick}} manner, of course), they both say, ''"No, we don't!"'' Everyone was assuming that the producers were saving that up for a CrowningMomentOfHeartwarming in the GrandFinale. Turns out that they either overlooked it or didn't want to focus on their relationship over the wizard competition.
** The family was originally supposed to be Irish, but was changed for Gomez.
* WordOfGod: About [[spoiler:Stevie's apparent death]], creator Todd J. Greenwald said on his Twitter that she was fused back together and sent of to an island for 6 months of 'Soul Rehab', and that she now lives a happy, fulfilling life back in the Wiz World with her new dogs, Mark and Susan.
* WrittenByCastMember: DavidHenrie wrote two episodes.