
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.
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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.