an other drawing i made when i was starting up. took reference from a picture online.

"Bloodsuckers are a type of rare mutant usually found in the deeper areas of the Zone, often underground. They seem vaguely humanoid, with a hunched stance and height similar to that of an average person. Their eyes are lambent and their mouths are surrounded by several powerful tentacles used for feeding on blood."

source:http://stalker.wikia.com/wiki/Bloodsucker