This is based on opinion. Please don't list it on a work's trope example list.
Tear Jerker / Arkham Asylum: A Serious House on Serious Earth
Two-Face's condition after the 'doctors' get through with him. Specifically, psychiatrist Dr. Adams took away his coin and replaced it with a die, giving him six options to choose from instead of two; she then moved on to a Tarot deck, and plans to complete the process with the I Ching. As a result, Two-Face has to consult his cards for every decision he makes—including using the bathroom. When Batman finds him, he's lying on the floor under a table, wetting himself because it took too long to choose. What makes it even worse is that Two-Face is genuinely apologetic for making a mess, which makes him sound like a sad, frightened child (an interpretation that lasts throughout the book). And Dr. Adams supports this.
The moon is so beautiful. It's a big silver dollar, flipped by God. And it landed scarred side up, see? So He made the world.
Two-Face at the end, whether through gratitude to Batman or a small part of Harvey Dent reemerging for a brief moment, lying about the coin toss to let Batman leave the asylum.
Two-Face: "Who cares for you? You're nothing but a house of cards."
Amadeus Arkham's Mercy Kill of his mother. And by implication, Dr. Adams' of Cavendish.