Mastodon - Commission work

Mastodon is a massive twelve foot tall beast. His physical frame is wide and rippling with muscle, a la The Hulk, and black as night. His face is the skull of a bull, with two massive horns jutting out from both sides. Blue fire erupts from the middle of his back. Ten tentacles are on the outer edges of his back, and are black and blue and cthulu-esque. A fiery green symbol is emblazoned on his chest