What is a nightling?

Answer 1

A nightling is a creature that roams the forest. the nightling was first introduced in the Moon and sun series. the nightlings have been at a war with humans until finally they made peace but humans and nightlings are not aloud to see each other.

Answer 2

A nightling is a term sometimes used to refer to a creature or person associated with the night or nocturnal activities. It is often used in fantasy fiction or mythology to describe beings that thrive in the darkness or have characteristics suited to nighttime.