The Six Munis (Skt.; Tib. Tubpa Druk; Wyl. thub pa drug) are the supreme nirmanakaya buddhas for each of the six classes of beings. They are:
Indra Kaushika (Skt.; Tib. Wangpo Gyajin; Wyl. dbang po brgya byin) for the god realms
Vemachitra (Skt. Vemacitra; Tib. Taksangri; Wyl. thags bzang ris) for the demi-gods or asura realms
Shakyamuni (Wyl. sh’akya thub pa) for the human realm
Shravasingha or Dhruvasiṃha (Skt.; Tib. Sengé Rabten; Wyl. seng ge rab brtan) for the animal realm
Jvālamukhadeva (Skt.; Tib. Khabar Dewa; Wyl. kha ‘bar de ba) for the preta realms
Dharmarāja (Skt.; Tib. Chökyi Gyalpo; Wyl. chos kyi rgyal po) for the hell realms