Prowlers are servants of The Black Dog. They are relatively rare, since the Black Dog doesn't accept servants often. The Prowlers that do exist tend to form packs with each other, similar to wolves.
Prowlers are former humans that have been transformed slightly by the Black Dog. They all have jet black hair and red eyes and have enhanced senses and agility. Some Prowlers can use their senses to locate Mana points and gain magic power.