Hyakugan Maoh

Hyakugan Maoh (百眼魔王, lit. "Hundred Eyes Demon King"), was originally one of the main antagonists from the original Journey to the West, being a centipede youkai/yaoguai.

In Saiyuki, he is known to be a great youkai who loves women, often abusing his power within his clan to kidnap beautiful women all around of any kind to have sex with and later dispose of by killing them (with Kanan being one of his impregnated victims which prompted Cho Gonou's prior slaying of his entire clan). Kazuya Minekura wasn’t able to show his form in the books, but he’s a centipede akin to his source material version albeit claimed to be more ghastly-looking, who doesn’t resemble his son Chin Yisou at all.

Yaone was at one point to be sold to him for her beauty, but she had a chance encounter with Kougaiji who brought her to serve him instead. If Yaone hadn’t been brought by Kougaiji like so, she too would have been ravaged by Hyakugan Maoh and her met her end by his venomous fangs.

It was too terrible an image to draw in the manga, but Gonou/Hakkai killed him by tearing him into shreds so small he could never regenerate.