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Top Definition. Hellhound. A hellhound is a dog of Hell, found in mythology, folklore and fiction. Hellhounds typically have features such as an unnaturally large size, a black fur color, glowing red eyes, super strength or speed, ghostly or phantom characteristics, and sometimes even the ability to talk.Hellhounds are often associated with fire, and may have fire-based abilities and appearances.ellhounds typically have features such as an unnaturally large size, a black fur color, glowing red eyes, super strength or speed, ghostly or phantom characteristics, and sometimes even the ability to talk. Hellhounds are often associated with fire, and may have fire-based abilities and appearances.
The Bearer of Death is a term used in describing the Hellhound. Hellhounds have been said to be as black as coal and smell of burning brimstone. They tend to leave behind a burned area wherever they go. A Hellhound named Sammael is one of the main antagonists in the first Hellboy film. 2  Hellhounds appear in the motion picture The Omen. 3  Hellhounds appear in the movie Percy Jackson and the Olympians: The Lightning Thief as pets of Persephone and Hades, differing from the books' portrayal of them.