It resembles a Tyrannosaurus Rex in shape, but it has longer and well developed arms that it uses to grab and slash at prey. It's teeth are crooked, and sharp, resembling a Vastatosaurus Rex from King Kong, and it has osteoderms on it's back, tail and head that can repel even seregios blade scales. It's eyes are yellow, and are cat like, and it has a crest of protofeathers on it's head. It's skin color is usually white, but it can change color, to the point where the Indominarch can blend in almost flawlessly, becoming completely invisible, like a Chameleos. It's tail has spike like barbs that can be shot out when the Indominarch swings it.