This is a concept I made for a boss in the form of a sea creature. It is based off the monster Kraken. He is damaged by the large amount of trash floating in the ocean, to the point that he is partially intertwined with it. Because of this, he is out for revenge on the human race.
He uses his tentacles as well as different types of trash to attack the player. The trash on his skin provides him with protection, making his main weak spot his eyes.