GURPS Middle Ages 1 includes a description of the Wild Hunt (p. MID102), and the folklore of most of northern Europe features assorted stories of supernatural hunts which ride out after human souls. The supernatural hounds of these stories form the basis of the hell hounds which can be found in many fantasy games.
The hell hounds of folklore are not as individually powerful as those in generic fantasy; they are normally no larger or stronger than normal hounds, and like normal hounds they run in packs, often of a dozen or more. Their appearance may be terrifying, with tongues and eyes of flame, black skin and so on, but they rarely exhibit any supernatural abilities apart from their baying, which is discussed below. The stats for a medium-sized dog can be used for folklore hell hounds under most circumstances.
In nearly all the stories, these creatures do far more damage with their voices than with their teeth. The sound of their baying carries for miles, and often the hounds themselves are never seen. Sometimes their baying works as a death omen, and sometimes it has a lesser effect, causing fear, rooting a person to the spot, and so on. This might be treated as a Mind Control spell (Fear or Panic), or Body Control (Rooted Feet), with an extended range (everywhere within earshot). As always, the GM should decide on the power which best fits the plot of the campaign.
Other Supernatural Powers
As mentioned above, these are rare. Some hell hounds can magically stay on a scent despite all obstacles, and some are invisible, or able to ignore movement penalties arising from terrain or obstacles. Some can fly, and some are impossible to outrun; their speed is always a fraction greater than that of their quarry. A pack of hell hounds will always have the same powers, with no individual variations.
Base Pelt Color:
Red and purple mixed together with black shadows.
At his shoulders he's 6 feet tall.
Mali has three heads and three tails. He looks a lot like this drakhenliche.deviantart.com/ar… actually but the snouts are longer. When Mali talks, all three heads speak, giving his voice an eerie echo. He is only one being though, just with extra heads.
He has horns and spikes and his middle tail like this fav.me/d4o0ccx
He has a forked tongue and the muscle and ligament is showing on his neck and legs like in this photo www.deviantart.com/submit/devi… and instead of a nose he has a huge ring that goes through the nasal cavity and the roof of his mouth. It's silver.
Broken chains around each neck and long shackles trailing from his back legs.
Powerful baying power, he has three different vocal chords. He's never lost a scent and sometimes when he's running as fast as he can (insanely speedy) he's invisible... because he goes so fast.. that... you can't see him... yeah.
Malicious is... Malicious. He's a hell hound, so why shouldn't he be? He has almost no emotion except for love of the hunt, but he can have morals at some point. He's a demon of folklore... so I'm not sure how to portray him. He has a nice sense of humour? Aha