Nothing is known about Coldhands' past. Based on his uniform and his demeanor with Samwell, he may have been a member of the Night's Watch before his death.
Coldhands rescues Samwell Tarly, Gilly, and her from incoming wights as they escape from Craster's Keep after the Night's Watch's mutiny. He escorts them back to the Wall's protection and, unable to enter due to magic, makes his primary concern Bran Stark and his company, charging Sam with returning Bran to safety.
Coldhands next appears with Bran, Meera Reed, Jojen Reed, and Hodor as he kills abandoned members of the Night's Watch. Bran is unaware of the mutiny and is concerned about both the lives of the Night's Watchmen and Jon himself.
The group travels to the Three-Eyeed Raven, with Coldhands' elk dying along the way. He protects them from wights, himself unable to enter the Three-Eyed Crow's cave due to magic.
Appearance and PersonalityEdit
Coldhands has all the traits of a wight: he is cold, lifeless, with black hands that are as cold as ice. This coldness extends to his efficiency, as he is a skilled enough warrior to kill several AWOL members of the Night's Watch.