Parselenae
Parselenae is a fictional term referring to individuals with the ability to communicate with snakes, a trait originating from the Parseltongue language in the Harry Potter universe. This hereditary magical ability allows its users to understand and speak to serpents. The ability is often associated with dark wizards, most notably Lord Voldemort, who extensively used it for his own nefarious purposes. However, it is not inherently evil, as demonstrated by Harry Potter, who possesses the gift and uses it for various ends throughout his time at Hogwarts.
The presence of Parselenae in a bloodline can be a sign of ancient magical heritage. While rare,