The Nāfuel are definitely the followers of Virūpākṣa (Pāli: Virūpakkha), on the list of 4 Heavenly Kings who guards the western path. They work as guards upon Mount Sumeru, shielding the dēvas of Trāyastriṃśa from assaults from the asuras. “Naga” is title of a T1 fight cruiser in EVE On-line https://128.199.208.170/