During the Xanth sequence by Piers Anthony, the Naga certainly are a race of human-headed serpents which can transform in between fully human and serpent varieties, like any species and size of snake. Patanjali as Śeṣa. Nagas, being a serpent-shaped group of deities That always take form as cobras, https://hectorsfrdn.blogolenta.com/24664203/details-fiction-and-23naga