Izulu, Impundulu, Thekwane, Inyoni Yezulu; also known as the Lightning Bird
a vampiric creature with an unquenchable thirst for blood, said to serve as familiars to witches or witch doctors and on occasion seducing your local women, go figure
and when dispatched by witch doctors, it can result in illness and bad luck bestowed upon some unfortunate individual.

Said to be immortal, unaffected by bullets, stabbing or poisons
They have only one known weakness: fire.