Okay, a trope I just love: A Villain uses a plot to weaken the heroes except they didn't account for something and proceed to get their ass kicked by the MUCH stronger hero.

The De-Aging one especially - "Oh I'll turn them into a kid and beat them up"

Kurama: Oops, you turned the human-demon incarnation back to his Kitsune self.

In 7th Stand User, hitting Joseph and you get peak Part 2 Joseph with Ripple power that Alessi has no idea how to counter

this is a good trope

It's just hilarious and great to see characters in a form you normally don't get to see

Monsoon trying to break Raiden in MGR by making him confront that he enjoys killing

and he comes out of it going "my god, you're right. killing rules and I'm good at it"

"and you're, like, right here"

Jujutsu Kaisen has a couple good ones of these

Didn't the Ragunian Emperor do this?

in Dragon Ball Valor?

Where he had a bunch of equipment keeping him weak that the heroes all got together to break without realizing what it did?

no he injected the antidotes himself

7th Stand User does what Araki said he regretted never doing i.e: Joseph and Alessi

This is quite good