I'm always running around, killing all those silly geese. But that's not my hobby. Sometimes the denizens of the Planes of Forever or whatever the balls my realm is named are total mean young gentlemen or ladies. This is when things get messy. Let me tell you what happens next.
So, example situation. Random Fucknozzle: Let's call him Zapas Thinnedglens. He thinks he's too good to join my party of awesome dudes. But I don't kill him. I hold my anger.
It's off to my other copy of this world. Legends... Zapas... Zapas Thinnedglens. There he is. I write down the names of all his closest relations: Children, spouse, parents. Then I go to the parents and find out if he has any siblings, and write them down. Next, I check each of these people, to find out where they are currently living in the world. If Deities besides Demons existed in the world, I'd find them, too. The manhunt begins.
I systematically find and murder each of these people. I absolutely always gouge out their eyes, and if their head gets lobbed off, I take it with me. It almost always is.
All his family is dead. I go back to whatever town my offender resides in. I find him, it usually doesn't take too long. I proceed to chuck his family's heads at him, usually killing him, and if I run out of heads, I resort to beating him with his son's arm or something.
It makes me feel really nice.