Who is Nag in Riki tiki tavi?

Nag is a large, male cobra and one of the main antagonists in Rudyard Kipling's "Rikki-Tikki-Tavi." He seeks to kill the human family that has taken in the mongoose Rikki-Tikki-Tavi, as he believes they pose a threat to his territory. Nag is cunning and dangerous, representing the threat to the safety of the garden and its inhabitants. His character embodies the struggle between good and evil, as Rikki-Tikki-Tavi ultimately confronts him to protect his adopted family.