Tetsuya Nomura
Tetsuya Nomura was largely responsible for Aya's design after her original artist failed to realize Sakaguchi's vision for the character. Nomura ended up blending two different character designs to create her final appearance. He also returned to design her in subsequent sequels of "Parasite Eve". Aya's depiction in "The 3rd Birthday" was meant to make her likeable for both men and women while retaining her sex appeal.