Ajiji

The Ajiji is a fearsome troll found in South Africa

it is believed by the locals that they come to be when baboons are possessed by malicious spirits as punishment for eating the newborn children of impala
the spirits are said to engulf the baboons brain eyes and penis, and cause the monkey to rampage, attacking villages, killing children and cattle,and raping young women ,especially while pregnant.they have been feared for many a year and in areas where they are rumored to live, it is not uncommon for men to be killed by accident simply for being raucous at night

scientists think the cause of this may be a mutant form of Leucochloridium
that may have been living inside the impala after being eaten by accident
from snails sitting on the impalas food.the mutant breed then takes control of its baboon host and proceedes to attack human settlements
the raping poses a serious issue,as it is thought thatthe worms may be trying to infect humans as well................

luckily im just talking out of my ass again,this was an idea i had for 's little art project at bogleech.com

also I apologize if this makes you squeemish but,oh well
as for any brutality in the 'mythos" here, try reading alot of foreign myths, they tend to gravitate into the sexual in some manner more often than not