Nefarious Ne'er-do-wells (俺たちゃアウトロー！ わるいやつらの宴), was a Spirit Board event focused on villainous spirits. It ran from 6 a.m. on June 26, 2020 to 6 a.m. on June 29, 2020 (UTC). During the event, defeating spirits on the Spirit Board which were part of the event awarded more Gold than usual.
Periodically appearing spirits
Randomly appearing spirits