In the Mahabharata, Sakuni is the uncle of Duryodhana and the other sons of Dhritarastra. He is Queen Gandhari's brother, son of the Gandhara king Subala.
He is known as a troublemaker, a giver of bad advice, and a crooked gambler. He teaches Duryodhana how to control the dice for his gambling duel with Yudisthira.