-Venom

What is Venom? Venom is a black alien mass classified as a Symbiote, which comes from another planet. Its body can transform at will by taking over the body of a Host (the Host doesn't matter here). Most often, it opts for a muscular body. Its completely black body has two large eyes, and a mouth with enormous, sharp teeth along with an excessively large tongue.
It seeks to survive by taking over a host but never flees in combat. It can transfigure its physical form into a weapon, create a scythe on its arms, and detach itself from the host to escape. Its only weakness is fire.