The Nāfuel tend to be the followers of Virūpākṣa (Pāli: Virūpakkha), one of many 4 Heavenly Kings who guards the western way. They act as guards upon Mount Sumeru, safeguarding the dēvas of Trāyastriṃśa from assaults by the asuras. In some cases, the kings by themselves participated in religious ceremonies, https://128.199.208.170/