I don't know about you but I love the bad boy in a story, that flare for mischief that gets them in just the right amount of trouble to make the story interesting. I don't know how many of you have seen Tangled, but it is the reason I love Rider. Sometimes my characters turn into the perfect blend of bad boy and hero and make the book exciting. I actually did this with a book I coauthored once (not a book I would ever publish). The character saved the story. He was the villain, but not so much the villain and I loved the character. I've often thought of telling his story and getting rid of the rest of the story because before he showed up it was terrible.
Anyway, mischeif is always fun to write.