[Prince Charon]

It really depends on what game I am doing. I tend to only forbid things that break the setting, or that make no sense for the character to have, and both of these will naturally vary by setting (including story mode, e.g. 'is this a Silly game?') and character.

EDIT: I do admit that I would be very reluctant to allow someone to play a rapist in any setting, though, nor a child molester. Some things are too creepy for what is essentially entertainment and escapism.