The game's artist Kinu Nishimura, likely used a picture of Masutatsu Ōyama (more commonly known as Mas Oyama) doing his stance as a reference work for her illustrated work of Ryu.

Eagle's win quotes in the Japanese version of the game are full of sexual undertones, including terminologies 攻め (seme; “attack”) and 受け (uke; “defence”). These terms are used in gay communities in order to describe the active and passive role respectively and are absent in the English release.

In the Japanese version, Rugal Bernstein uses his technique called "Genocide Cutter" and even say it out load, but it was renamed to "Destroyer Cutter" and changed the dub to grunt sounds when he performs his move in the other versions.