Redbeard is a character living in the Land of Thousand Fables and a minor villain in the Blood and Wine expansion of The Witcher 3: Wild Hunt. As everyone in the illusion, he is a stereotypical fairytale character. He is the leader of a gang of bandits who have stolen the goose that lays golden eggs.
When Geralt and Syanna meet the Big Bad Wolf, he lies on the ground completely drunk, as he was drinking with Redbeard the night before.
Redbeard eventually kidnaps the goose that lays golden eggs, planning to get rich. He and his bandits then return to their camp in the woods where they are tracked down by Geralt who kills the bandits, including Redbeard.
The Witcher 2: Assassin of Kings
The Witcher 3: Wild Hunt