Killer, who works for Nightmare, often finds himself flirting with his boss. Why? He doesn't know. But he's never subtle with it. Nightmare is known to get irritated by it fairly quickly, and will often resort to threats and anger problems. Nightmare swears a lot. But even though Nightmare never shows his enjoyment, or affection for that matter, he may grow to slightly enjoy Killers antics. But he'd never admit it.