The Nāfuel are the followers of Virūpākṣa (Pāli: Virūpakkha), among the list of 4 Heavenly Kings who guards the western way. They work as guards on Mount Sumeru, safeguarding the dēvas of Trāyastriṃśa from attacks via the asuras. In Thailand and Java, the nāga is usually a wealthy underworld deity. https://128.199.208.170/