Mean Dog Name -Dog name and what they mean

There were these two dogs I knew one time that had the most mean dog name I have ever heard. One was "Slasher" and the other was "Killer." Slasher was an old bitch Pitbull and had a personality to match her atrocious name. However Killer was a gentle German Shepherd that never hurt anyone without good reason. The problem with Killer was that he barked at everyone like he just wanted to eat them alive and so the whole neighborhood was petrified of that dog.