Carnage

Carnage is a fictional supervillain appearing in American comic books published by Marvel Comics. The character first appeared in The Amazing Spider-Man #360. Carnage was created by writer David Michelinie and artist Mark Bagley. The character belongs to a race of amorphous extraterrestrial parasites known as the Symbiote. The symbiote is usually depicted as an offspring of Venom. The symbiote has taken many hosts. The original and most notable host is serial killer Cletus Kasady. Other hosts include Karl Malus and Norman Osborn.

Pretty simple avatar!
Not much else to say, I THINK it has a jaw flap bone set for talking, although I could never figure that out.