Ryger the Strong, or simply Ryger, is a Northerner and the unacknowledged bastard son of Roose Bolton.
Ryger was conceived around the same time as his half-brother Ramsay, though the circumstances of this are unknown.
Ryger grew up on his uncles farm along with his mother. When his uncle died, he inherited the farm, before finally leaving to live elsewhere. He became a blacksmith and spent his time fighting in local fighting pits for coin, where his successes were so great the spectators began calling him Ryger the Strong. During the War of the Five Kings, Rygen had fought off against several soldiers of the Northern army, even meeting Robb Stark, and unbeknownst to him, his father Roose Bolton.