The Smile entity : Forced to go through EVERYTHING he put his victims through , I'd prefer this punishment be given by God himself if the entity really is a demon.
The Coachman : Turned into a donkey and sold of to a plantation to be worked to death.
Punchline : Having her face carved out by joker (joker himself deserves one of these fates but I'm too overwhelmed by all the things that should be done to him)
Odalia Blight : Striped of her riches , resources and forced onto the streets y'know cuz she's an elitist
Emma Grossman : Cut piece by piece from the bottom up , a piece for each one of her victims till she's dead (I actually do feel bad abt this one since she's still a child/minor at the end of the day)
The Qu : They are deafeated but It's never specified how their defeated so in my opinion the most karmic defeat would to be enslaved by the species they terrorized for so long.
ANY rapist that's gotten away with their crimes should be raped in turn then put to death , simple.