Irrelevant to the series. It's just conceptual artwork that wasn't used in the final product.
I believe that they hired the same artist who did the artwork for PSII's JP game case (I cannot recall his name, but I think he's a freelancer). Toru Yoshida is the man behind all of the character and some enemy designs that were used in II & IV. He's a close colleague to Rieko Kodama, one of the founding members behind the original PS series.
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