The Nāgas would be the followers of Virūpākṣa (Pāli: Virūpakkha), among the list of 4 Heavenly Kings who guards the western direction. They act as guards upon Mount Sumeru, defending the dēvas of Trāyastriṃśa from assaults by the asuras. In Thailand and Java, the nāga is usually a rich underworld https://128.199.208.170/