The giant smashed through the gates of Winterfell so Jon Snow and his allies could get to the evil Ramsay.
But after being pummelled by loads of arrows and surviving, Wun Wun was finished off by an arrow to the eye.
The big man served his purpose and Jon Snow eventually battered his enemy in a bloody fist-fight.
It was Sansa Stark that finished Ramsay off, though, by setting his own starving hounds on him.
The face behind Wun Wun is a far cry from the fantasy beast viewers are used to seeing, though.
The man that played the now deceased giant was Ian Whyte, a Welsh actor and stuntman.
He’s played the larger than life character since the episode Hardhome in season 5, and it’s pretty clear why.
Ian is a bit of a giant in real life, measuring 7ft 1in (2.16m) tall – though he clearly still needed a helping hand from prosthetics and CGI.
The former basketball player also had a few other appearances in Game of Thrones, though, including as a stand in Gregor Clegane and a White Walker in season 2.