The ShodaiGoji's name comes from shodai (初代?), meaning first generation, and Goji, which comes from Godzilla's Japanese name, Gojira (ゴジラ?).
The ShodaiGoji is popular with fans who prefer the first, darker toned Godzilla film. This suit featured a heavy lower body, small arms and a large, round head. The face had pronounced brows while the eyes were completely round with tiny pupils, a feature unique to this costume.
The suit also included several features particular to itself and to the GyakushuGoji: fangs, four toes, a rough underside for the tail and pointed tail tip, and staggered rows of dorsal plates (these features would reappear with the Heisei series of Godzilla films from 1984 to 1999). The dorsal plates for both the ShodaiGoji and the GyakushuGoji were dynamic in design and unique to the two costumes. During filming, a separate pair of Godzilla legs were used for close-up shots of Godzilla's feet.