Yūrei

"Oh, how ironic fate can be...This 'Anki' thing you have? It is nothing compared to the original."

- Yūrei, to Gai Nagareboshi

Yūrei is a powerful Mototsu. In "A Certain Unlucky Person", he was sealed within the depths of Seireitei by the Soul King until Gai Nagareboshi's crew's battles against the Gotei 13, after which he was unsealed. After this, he becomes the main antagonist.