Note: This is my A to Z Challenge post for O. If you are looking for my S&W Appreciation Day post, go here.
Let's head back to Africa today, in particular to visit Guinea, Africa and their local pest the Ovegua.
This creature is created when a sorcerer or witch is killed. It can take the shape of a dog and has hooks for hands, or sometimes hooks for feet. The Ovegua will hang out in forests at night and call out to a victim by name. If the victim answers them the vampire will then target them by sucking blood through their thumb. During the day they hide in dark caves.
Ovegua has all the standard weaknesses of all vampires. They can not cross running water, sunlight destroys them and religious items keep them at bay.
To destroy one you must locate it's cave. Nail it to the ground and burn the body to ashes.
The Ovegua can shapeshift to a wild dog and mist. It has two claws and a bite attack. It's drain attack drains 1 point of Constitution per night; regardless of number of attacks. It can only drain sleeping victims, not in combat. It is only a little stronger than the average human (Str 14) but not much faster. Ovegua would be a weak vampire but it retains some of the knowledge it had as a sorcerer. It can cast spells as a 3rd level witch. Additionally it only regenerates 1 hp/round vs. the typical 3.
Since today is Swords & Wizardry Appreciation Day, here he is in S&W format.
Hit Dice: 7
Armor Class: 2 
Attacks: Bite (1d6 + CON drain)
Saving Throw: 9
Special: vampire powers, witch spells
Challenge Level/XP: 7 HD (9/1,100)