In the Harry Potter games, there are several spells like Flipendo and Skurge, which I don’t remember seeing in the books or movies.
Were they actually used at any point in the books or movies and I didn’t notice, or do they come from somewhere else? (And if so, where?)
No. I cannot remember where, but I read once that the developers included Flipendo only because they needed a default attack spell. Expelliarmus had not been introduced at this point, and everything else was unsuitable.
Skurge is simply a game mechanic used to solve puzzles.
Skurge was used in the Chamber of Secrets video game as a cleaning spell to remove the ectoplasm left behind by ghosts. It’s never mentioned again, but a similar spell with a similar incantation as well exists in the books - Scourgify, which is used to clean.
“Never mind,’ said Ginny bracingly. ‘Look, we can easily get rid of all this.’ She pulled out her wand. ‘Scourgify!’
The Stinksap vanished.”
- Harry Potter and the Order of the Phoenix, Chapter 10 (Luna Lovegood)
In the promotional game “Fantastic Beasts: Cases from the Wizarding World”, the spell Scourgify serves a similar function that Skurge did in the previous games - it’s used to clean up items that need to be investigated.
No spell with the incantation Flipendo is ever used in the seven books or their corresponding movies. It was most likely invented to enable the knocking away of objects, which was a big part of the early games especially.
There are no directly analogous spells to it in the books or movies, either. There are spells cast wordlessly that can send people flying, and Expelliarmus and Stupefy are both simple dueling spells, but there’s nothing analogous to Flipendo like Skurge is to Scourgify.
