King Shalya, the ruler of the Madra kingdom was the charioteer of Karna when he assumed command of the Kaurava army. He was the brother of Madri (mother of Nakula and Sahadeva) and known to be a powerful mace fighter and a formidable charioteer, was tricked by Duryodhana to fight the war on the side of the Kauravas. Though he had agreed to demoralise Karna, he eventually grew to respect Karna and eventually took over as commander of the Kaurava forces after Karna’s death.