Deutalios resembles a cross between a rat and various fish. He has a long, whip like tail and extended ears which appear to display gills on them, large tusks, and a horn protruding from its head. For a creature that was adapted to living in water, Deutalios appears to have retained its long fur. In some concept art, Deutalios appears to have fins in place of forelimbs, allowing him to swim. The horn on his head also resembles an angler fish's antenna in this artwork, while his eyes are very large and pupil-less, similar to fish eyes. Godzilla was going to fight Deutalios instead of the Super X2 and the rose form of Biollante. After prevailing, Godzilla would have consumed the monster. The monster was possibly dropped due to the graphic nature of this scene, or simply to make room for another battle with Biollante and the Super X2.