1) Bad hat 2) DC Comics martial artist 3) Devilish sort 4) Greek legendary creature 5) Mischief-maker 6) Mythical watchdog 7) Son of Typhon 8) Supernatural legend 9) Trouble maker 10) Troublemaker 11) Troubler 1) Cerberus 2) Demon 
A hellhound is a supernatural dog in folklore. A wide variety of ominous or hellish supernatural dogs occur in mythologies around the world, similar to the oft-seen dragon. Features that have been attributed to hellhounds include black fur, glowing red - or sometimes yellow - eyes, super strength or speed, ghostly or phantom characteristics, foul ...
• (n.) A dog of hell; an agent of hell.
a dog represented in mythology (such as that of ancient Greece and Scandinavia) as standing guard in the underworld. In Greek mythology this was ...
Hell'hound` noun [ Anglo-Saxon hellehund .] A dog of hell; an agent of hell. « A hellhound , that doth hunt us all to death.» Shak. 
[n] - a very evil man