Wight (The Long Night)

A wight was a member of the Army of the Dead and fought in the Battle of Ice and Fire.

Background
He was killed at some point during the Conflict Beyond the Wall and resurrected as a wight. Once the Night King breached the Wall with the aid of Viserion, he made his way south into Westeros with the rest of the Army of the Dead.

​​Season 8
He climbed over the wall of Winterfell and entered the castle. Along with several others, he entered the library, where Arya Stark had come after being overwhelmed by the battle. He almost caught Arya when she hid under a bookcase, but she managed to escape before he could spot her. Arya then knocked over a book to distract the wights and make her escape, but despite her taking great care to close the door gently and quietly, the wights still heard her and pursued her. He died alongside the rest of the Army of the Dead when Arya killed the Night King by stabbing him with a dragonglass dagger, ending the threat of the White Walkers once and for all.