'Mama' (mother's brother) of the Kauravas, he was cunning and crafty. He had a big hand in instigating Duryodhan, the eldest son of Dhritrashtra, against the Pandavas which developed into the Mahabharata war. What was the name of this character?

Shakuni is the correct answer. He was the maternal uncle of the Kauravas and the main architect of the Mahabharata war. He constantly instigated Duryodhana against the Pandavas and masterminded the disastrous game of dice that led to the war. His cunning and manipulative nature makes him the central antagonist. The other options are not the 'mama' character.