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