This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / Shin Megami Tensei I
In the beginning of the game, you and the Law Hero are imprisoned for asking about the demons. When you break out of your cells, you discover the doctors there are Playing with Syringes and performing horrible experiments on prisoners to create mindlessly obedient super soldiers.
Coming home to your mother, only to find out it's actually a demon disguised as your mother, who the demon already ate!
The Chaos Hero goes straight for the obvious question about the Cathedral of Shadows and tries to manipulate the demon fusion process and fuse himselfwith a demon.