[quote=Leidenschaft]
Does he necessarily have to literally be clinically insane? Why not have him be just a guy who believes in Boethian/Nietzschean philosophy? Respect none but yourself, legitimize no royal with your hatred of him, only disregard them as what they are- a shape of metal and the weakling hiding under it. You read that reddit link I sent you? Disregard whatever anyone here has to say about reddit, that post is good.
[/quote]

But reddit is where the autocannibalistic clown rapists dwell. :(

Anyways, on the topic of mentality ill characters, my advice is to ask yourself if you think you can maintain playing a character like that consistently. You might not be happy playing a character you always have to check to make sure you're playing correctly, which may take the fun out of it.

Not to say it can't be done well or enjoyably, but it's certainly something to consider if you're not sure if it would be something you would enjoy writing for long periods.