A police procedural novel can be even funnier if the police include Trolls and Dwarves and things like that. You start looking at the whole basis of the cop novel. You get the cop moving in a different way when you've actually set it in a fantasy city.
Terry PratchettOnce you have your character sitting right there in your head, all you really need to do is wind them up, put them down, and simply write down what they do, say, or think.
Terry PratchettHe talks pretty big for a gutter wizard," he muttered. "You don't understand at all," said the wizard wearily. "I'm so scared of you my spine has turned to jelly, it's just that I'm suffering from an overdose of terror right now. I mean, when I've got over that then I'll have time to be decently frightened of you.
Terry Pratchett