Krabby destroying round 1 in the Indigo League
Muk destroying bellsprout (well atleast that made more sense considering its body characteristic was used)
What's funny is that JN mons were still atleast somewhat trained, these mons along with Tauros in the OL turn up for the first time and dominate lmao
Battle frontiers being implied to be E4 level
Flint episode in DP
Everything about BW related to Ash, whether it be snivy (which I'd say is less egregious than the others one since it atleast had a reason), Panpour, Elesa and Cameron
Sawyers insane strength in short amount of time, Lysandre being too OP
Bewear (best case of destroying powerscaling
), Poipole evolving offscreen
Iris battle, the entirety of it. Leon vs Diantha, Leon was too OP in that, barely seeing the JN team appear and train, Zapdos and Suicune's treatment.