A Basque Myth of France, The Gaueko were Spirit Demons who resembled a Ghost or Fog-like Mist. The were the Keepers of The Night and often seen as Custodians of Nightmare. The could present a fearful image to the Person who did not fear The Night. Terrorizing such Humans, The Gaueko were capable of causing Humans to go insane, often claiming Tye Demon Spirits followed them home and could be seen by only the affected. Such claims would eventually land such unfortunates in a Sanitorium (or Insane Asylum).