From the Xanth sequence by Piers Anthony, the Naga really are a race of human-headed serpents that could change in between fully human and serpent varieties, like any species and dimension of snake. s are Shesha (or Ananta), who while in the Hindu fantasy of creation supports Narayana (Vishnu) https://agenjuditerbaiktopi8878833.bloggerchest.com/28786666/what-does-23naga-mean