The ShodaiHedo's name comes from shodai (初代?), meaning first generation, and Hedo, which comes from Hedorah's Japanese name, Hedora (ヘドラ?).
The ShodaiHedo suit has a mossy green, reddish orange and dark gray body. The eyes have red lamps that glow and it has vines all over the body to to give it a trashy, unnatural look. The suit was made to be very soft so that Godzilla could dig in his body. It seems to have a bump on its head, making the right side of its head bigger and more swollen than the left side. The ShodaiHedo also has a long, bushy tail that always is being dragged around the ground.
During filming of Godzilla vs. Hedorah, Kenpachiro Satsuma suffered a bout of appendicitis and had to have his appendix removed. However, the doctors found the suit too difficult to remove, and had to cut a hole in the suit to reach Satsuma's abdomen. During the operation, Satsuma learnt that painkillers had no effect on him.