- Retroactive Recognition: For those who weren't one of the three people who saw Darren Criss on Eastwick before A Very Potter Musical. This started happening a lot more to him once he starts appearing on Glee.
- Serendipity Writes the Plot: Joe Moses actually had a cold during the performance, creating the iconic wheezy voice which Moses then had to fake during all future appearances.
- What Could Have Been: At 2012 LeakyCon, Team StarKid revealed several examples:
- The show was originally intended as more serious and more faithful to the books
- Before Dylan joined the cast, Joe Walker was intended to play both Voldemort and Dumbledore
- Brian Rosenthal was at one point considered for the role of Harry and Lauren was considered for Hermione.
- Crabbe was almost a basic hand puppet controlled by Goyle.
A Very Potter Sequel:
- Actor Allusion
- Darren Criss refers to his actual hobby of covering Disney songs.
Harry: ...I make weird covers of Disney songs, who does that?
- Harry also gets sorted as Metrosexual which is quite amusing considering how Camp Straight Darren Criss actually is.
- Both in A Very Potter Sequel and Me and My Dick, Nicholas Joseph Strauss-Mathathia's character leaves in the end of the play, and even uses the exact same piece of dialogue: "I could travel the world. I've always wanted to see Venice."
- Actress Brittany Coleman plays Dean Thomas, who sounds just like Gary Coleman.
- Darren Criss refers to his actual hobby of covering Disney songs.
- Fandom Nod
- Luna Lovegood's cameo and explanation to why we don't see her in the original.
- It's explained why Dumbledore was able to Dissapperate inside Hogwarts in the first Musical when Umbridge questions it after his escape — he never did, he just seems to say "Dissapperate" whenever he leaves a room.
- Production Posse: Several of the new characters are played by Me and My Dick alums. Flopsy is Lupin, The Old Snatch is Sirius, Big T is Yaxley, Weenie is Lily, Hedwig, and Luna.
- Throw It In: Actually subverted, perhaps an unprecedented feat with this trope. Ron's failure to take the Taylor Lautner poster down and the resultant Corpsing and ad-libs about there being a Lautner poster in every room, even the stagehands (not visible in the filmed version) who also fail to take the poster down between the two scenes - it was all completely staged, as evidenced by the poster turning out to be Peter Pettigrew.
- Writer Revolt: It seems the writers/creators have mixed thoughts about their decision to censor and edit A Very Potter Musical to something worthy of a PG-13 once it caught on with younger audiences online. Though censored F-bombs and edits appear in the sequel too, Lupin and other new characters seem to been written specifically with Cluster S Bombs and similar frequent (but PG-13-appropriate!) profanity sewn into their personalities, and in a sly nod to the original censorship, the kid characters (now only eleven!) cover their ears anytime Lupin swears.
- When the kids go back in time and they see themselves in the past, they're all played by people in the play who look nothing like them. Draco is played by the tallest guy in the show (Jim Povolo a.k.a Goyle) Hermione is played by a husky man (Richard Campbell a.k.a Neville), Ron is played by a much skinnier guy (Brian Rosenthal a.k.a. Seamus), and Harry is a petite Asian girl (Sango Tajima a.k.a. Lavender Brown) in an afro wig.
A Very Potter Senior Year:
- Actor Allusion: "Wizard of the Year" contains several lyrics mocking Harry that seem more based on mocking his actor's role on Glee, specifically the loss of his "beautiful fro", his Warbler outfit, his use of lip sync, and the lack of a real story for his character.
- There's also a "loser like me" line, a reference to one of Glee's original songs.
- Deleted Scene: A few lines in the script didn't make it to the Youtube release.
- A scene where young Tom Riddle says goodbye to Damien, the orphan Anti-Christ at their orphanage. It heavily implies that they 'experimented', with each other.
- A short exchange where Scarfy flirts with a shawl was cut out as well.
- They also cut out all of the lines were the Riddles accused Tom of being gay. It could be because the lines actually weren't played for laughs and actually made the scene more depressing.
- A line was cut out where Hagrid threatened to hurt himself if Harry left. (It was Played for Laughs) It was probably due to the fact that several people actually thought it wasn't funny and that it was extremely offensive.
- A second epilogue where Lockhart achieves his dream of being found by mice was not present, probably due to the fact that it takes away from the "Hermione and Lockhart writing the Harry Potter series" subplot.
- Right after Hermione accepts Ron's proposal, Dumbledore and Rumbleroar made a cameo. There's no explanation as to why it was removed (if it was even in the live show).
- Hermione's "transformation" being a result of using the Reparo charm on her face when Neville broke her nose.
- Development Gag: When Harry repeats his "Butterbeer's on me!" line from the original show only for McGonagall to silence the resulting cheers; this is a reference to the original plan for A Very Potter Sequel, which would have picked up exactly where Musical left off, with McGonagall similarly putting a stop to the celebration of Voldemort's defeat.
- The Other Darrin: Meredith Stepien replaces Bonnie Gruesen as Hermione. In true StarKid style, it is immediately lampshaded. Hermione breaks her nose at the beginning of the musical and fixes it with a spell, but looks different.
Hemione: Well, I may look different, but you guys should just treat me like I'm the same old Hermione you know and love. (To audience) And that goes for all you too. (She winks at audience)
- Luna Lovegood is also recast... but in a true Crowning Moment of Awesome, she's recast with Evanna Lynch.
- Ironically, the actor named Darren is never recast (if anything, the unwillingness to recast him made it more difficult to get AVPSY off the ground).
- Julia Albain was unable to appear, and is replaced by Brant Cox as Percy and Pat Brady as the Candy Lady, while Crabbe is killed offscreen. In an Actor Allusion, the Candy Lady has taken Crabbe's place in Draco's gang.
- Production Posse: With only three exceptions, every single actor who's ever been in a Starkid production is in this show. Notable examples includes Elona Finlay from Little White Lie as Madam Pomfrey and Alle-Faye Monka from Me and My Dick as Fleur, both of whom hadn't been used by the company in years.
- Reality Subtext
- Growing up, moving on, and letting go of Harry Potter and Hogwarts.
- Some of the lines in the show—particularly, a few lyrics in "This is the End" and "Wizard of the Year"—seem like they're not about Harry getting old so much as they are about Darren Criss growing apart from Team Starkid as he finds mainstream fame.
- Throw It In: "I hope you find that swimming pool" in Harry's repeat of "Going Back to Hogwarts" to his son was added last minute back stage. And all the better for it.
- The whole rule about having to touch the diary to see/hear Voldemort was something Joe Walker improvised to justify why Hermione couldn't see or hear him (In the script this isn't mentioned at all and he just hides under a desk when she comes in, but since this was a staged reading, there was no desk and thus, no real place for him to hide). And rather than treat it as a throwaway improv, Darren chose to bring it up again, turning a dramatic confrontation into comedy gold.