Hazbin Hotel and Hell's Boss

(in short, this is like my first attempt, so if it doesn’t work out, then don’t scold me) you end up in hell, but you will need to come up with your own demon, what he will look like, his sin and his ability (please do not take any hyper-abilities) when you create it, you end up in hell, you will need to come up with a place to appear, and in hell you can do whatever you want