Zanmu Nippaku

Zanmu is described as the perfect oni according to Suika. She has both the strength and intelligence that an oni should be portraying, which made her a "intelligentsia". That said and although she made it for selfish reasons, she is also seen to have a sense of grace, seeking a (relatively) peaceful resolution to the beast wars and to protect Gensokyo from destruction. In this sense, she shares much in common with Reimu, feeling a sense of communality.

Zanmu is not easily upset or angered when the events are not going exactly as she wants. She frequently forgives her bumbling assistant, Hisami, showing she can work with an acceptable error range.

According to Saki, Zanmu is a popular figure in Hell. [3] So much so that Zanmu was able to sway the oni to calm down and let her handle the beast spirits situation. Zanmu Nippaku was formerly a human monk during the Sengoku Jidai period. Zanmu discarded her humanity by absorbing beast-youkai spirits. Sensing her imminent fall to Hell, Zanmu ventured there prematurely. There she transformed into an oni and ruled Hell using her intelligence and charisma. She proposed the relocation of Hell from Former Hell, creating a great amount of resentment from those that stayed behind. Currently she resides in Hell. She is said to command great admiration and respect from the dwellers of Hell.

During the events of Unfinished Dream of All Living Ghost, she uses her ability and influence to manipulate the other protagonists in order to achieve her end goal.