Petra Calliope Black's Universe
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Listing Series
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Petra Calliope and the Issue with Having Fun by MabelLover
Fandoms: Harry Potter - J. K. Rowling
25 Oct 2025
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Summary
"Don’t get caught, Reg had said, all the way back at Aunt Druella’s funeral, hugging her and begging her to be careful. And what’s the best way to not get caught? To have your cake and eat it too?
Well. You got to be the one doing the catching, no?"
A casual fan of Harry Potter who doesn't actually know much about it wakes up one day as Petra Calliope Black and decides to have fun.
This is not a story about heroes or good people. This is a story about entitled, arrogant, bad people who think they're in the right.
Series
- Part 1 of Petra Calliope Black's Universe
- Part 1 of Self-Insert Extravaganza
- Part 1 of self inserts and the fascistic wizarding world
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Summary
In another universe, Petra Calliope Black paid more attention to her sister’s ramblings. Scenes from a world where Petra is a bit more genre-savvy.
(AU of my fic Petra Calliope and the Issue with Having Fun.)Series
- Part 2 of Petra Calliope Black's Universe
- Part 1 of Self-Insert Extravaganza
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Summary
[Sirius read the society columns of the Daily Prophet, still gossiping about him and his siblings running away.
“Go piss, girl,” he whispered at Walburga Black’s incensed face, using an expression he’s heard Petra using more than once before.]
In which Sirius Black speaks with his brother and three children run from Grimmauld Place rather than just one.
AU of Petra Calliope and the Issue with Having Fun, from the perspective of Sirius Black.Series
- Part 3 of Petra Calliope Black's Universe
- Part 2 of Self-Insert Extravaganza
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Summary
There are doors in the Order’s headquarter that just don’t open, no matter how much the Weasley twins try to magic their way in. There are bedrooms that vanish from view before letting anyone in or jam their doors like they’ve been glued shut, a whole basement floor that no one has been able to find, a music room that throws people out with a gust of wind.
Nights at Grimmauld Place are always odd.
It isn’t just the moaning of the old, ratty paintings, or the occasional creature hiding under the beds. It isn’t just the cursed artifacts or the creaking wood or the leaking taps. At night, when no one is bothering with their wands and no one is speaking, there is something older at play.
Ron nods when Harry tells him these things. “It’s normal. Magical houses don’t like to change, especially when the people inside aren’t its family.”Or, Harry and Grimmauld Place - and its many many ghosts, literal or not.
AU of my fic.Series
- Part 4 of Petra Calliope Black's Universe