Carnage

Carnage is indeed a minor antagonist for now who was introduced in the Slaughtering Symbiote. He is one of Venom's offspring, but is an enemy to Venom. Unlike Venom, Carnage can make both defensive and offensive weapons. He's not an anti-hero for sure, especially because he kills A LOT of people and enjoys killing like it's his favorite game.

History
(The story isn't completed yet. Stay tune to find out more).

Appearance
Carnage is a red and black slimy alien symbiote who can take any form and shape. When taking a human host however, he is strong, but not big. He is mostly red but with some black spots and has spider man like eyes with a different type of mouth compared to Venom. He has a mouth where his tongue looks more like sticky bubble gum and he has black teeth. He has more of a liquid texture because of how he's mostly composed of blood.

Plot of Story
(The story isn't completed yet. Stay tune to find out more).

Protagonist or Antagonist? (Please include evidence).
Again, Carnage is most definitely an antagonist. Because of his killing nature and taking a psychopath as a host, he finds killing as his favorite game.

Strengths and Weaknesses
Strengths: Electricity, Shapeshifting, Blood, Superhuman Strength, Weapons, and Tentacles.

Weaknesses: Fire and High Frequency Sound.