A guru was a type of teacher.
After ending his time travelling, Paravatar moved to Indonesia and became a guru. (AUDIO: 1963: Fanfare for the Common Men)
Baiame was a guru who convinced his people to stay behind in Australia when the Earth was doomed. (AUDIO: Dreamtime)
Henry Gordon Jago and George Litefoot stopped an alien being and a mad guru from killing people by eating food containing the aliens' offspring. (AUDIO: The Case of the Gluttonous Guru)