The ShodaiMeganuron's name comes from shodai (初代?), meaning first generation, and Meganuron, which comes from Meganulon's Japanese name, Meganuron (メガヌロン?).
The ShodaiMeganuron is mostly a dark brown all throughout its body, with a segmented body, six thin legs, a very long, fat, armored body, and a tail that drags along the ground. Its pincers have a spiky, sharp, and thin crab pincer-like shape, and its legs are segmented and have a single claw on each foot. Its face has large, bulging blue compound eyes, an almost spherically-shaped mouth which can open up, a hair-like substance under the mouth, and tusks on each cheek.