There are two versions of the early concept art for Hishi Amazon's Race outfit with and without her wearing undergarments, with the latter version sporting noticeable tan-lines. The pantless design was first used around the time of the character's reveal in 2017 and was replaced by the censored version seemingly around 2018. The pose she makes in this concept art appears to be a reference to the pose made by the titular main protagonist of the 1974 Japanese TV series "Kamen Rider Amazon", who she shares the name Amazon with. Neither version of this design would be used in the final game as it was instead redesigned completely.