All Appearances

Official canon

 * Undefined Fantastic Object (Stage 6 boss)
 * Ten Desires (Backstory)
 * Hopeless Masquerade (Playable character, possible opponent)
 * Urban Legend in Limbo (Playable character, possible opponent)

Fangames

 * Mystical Power Plant (Playable character)
 * Vaudeville of Falling Disciple (Playable character)
 * Apocalypse (Stage 4 midboss)