- Adored by the Network: Defied. Her videos on That Guy with the Glasses were released at a constant, steady rate, starting with The Black Gestapo, as it was the first episode to feature any sort of continuity. She also didn't release commentaries of her own work on TGWTG because she considers them supplemental material for hardcore fans.
- Colbert Bump: Featuring/promoting lesser-known critics is a staple of her show.
- Creator Breakdown: Her theory as to why The Perils of Gwendoline in the Land of the Yik-Yak's second half includes among other things pony girls - he drove himself crazy trying not to direct porn for the first half of the film.
- Follow the Leader: She freely admitted that her Backseat Critique series was copying Midnight Screenings.
- Old Shame: Her reviews of Zombeak and Poultrygeist, because of JewWario's involvement. Rather than delete them, she kept them up for historical purposes and disabled the comments. In the re-uploaded description, she says she never wants to view either video again.
- Promoted Fangirl
- Real-Life Relative:
- In an interview she said her brother plays the main minion (presumably Teddy/Tiberius).
- The Omega is her wife.
- Her father provided the voice of the Liar in The Liars Guide to Derry, as well as playing the pony-obsessed man in S**t people who comment on Hagan reviews say and her review of Equestria Girls.
- Reality Subtext: A recent crossover with the Omega has Diamanda call her "adorable" and Omega finishing the review with: "Yes! I think she likes me!". Giovanni the talking lobster also suggests why the two don't just get married already.
- Rule 34 Creator Reactions:"someone asked for hagan/ nostalgia chick/ marzgurl slash THIS AMUSES ME"
- What's more: when the prompt was filled, Aleister did a dramatic reading of it.
- When Hagen found that a deviant art user had made a series of rule 34 pictures of her she gave him a shoutout in her "Lesbian Talk" podcast.
- Talking to Herself: Any scene with Diamanda talking to Aleister, or Nina Galas. She takes this one step further when her voiceover self and on-camera self both start talking to each other in Preaching to the Perverted and Emmanuelle 5.Diamanda: Voiceover version of me, are you sure that's the right part?Voiceover: Do you want to do this? I could stand in front of a camera, looking all glamorous if you'd rather stand here, yelling into a microphone for no credit at all!
- This gets taken up a notch in the Tribulation review, where voiceover-Hagan and the on-camera-Hagan take out the writer-Hagan, and they both end up being unfunny and awkward, not knowing what to do next because writer-Hagan is the one who writes how they behave.
- Last House on Dead End Street has voice and on-camera being the same, but their rage against the writer backfiring. Also, The Island Of Dr Moreau starts with the four Hagans arguing with writer-Hagan asking how such a crossover is possible.
Trivia / Diamanda Hagan