Leviathan is thirty feet tall with a seemingly disproportionate body and scaly green skin. He has a top-heavy appearance due to his hunched shoulders and the large cords of muscles standing out on his neck, upper torso, and shoulders. The top-heavy appearance is only strengthened by his much thinner forearms and calves, topped off with massive claws and digitigrade feet. At the back of his body is a prehensile whip-like tail around 50 feet long. Leviathan weighs nearly nine tons. His face lacks any kind of mouth, nose, or ears, with the only features being four cracks containing glowing green orbs that resemble eyes. These eyes are placed asymmetrically, with three on the left side of the face and one on the right. At some point, Leviathan seemingly developed a fifth eye. This eye appeared due to battle damage.When walking on two legs he sways his upper body back and forth in sync with the swaying of his arms, using his tail for balance. However he is far more balanced and significantly faster once on all fours, fast enough to run on the surface of the water. He leaves an \'afterimage\' of water whenever he moves, equivalent to the volume of whatever body part is in motion, perpetually shrouding him in water.