Tikoloshe

In Zulu/Xhosa mythology, Tikoloshe, Tokoloshe, De'Avion or Hili is a dwarf-like water sprite. It is considered a mischievous and evil spirit that can become invisible by drinking water. Tokoloshes are called upon by malevolent people to cause trouble for others. At its least harmful, a tokoloshe can be used to scare children, but its power extends to causing illness or even the death of the victim. The creature might be banished by a n'anga (spiritual healer), who has the power to expel it from the area.