Asutai

Asutai (1243 - unknown), was a prince of the Mongol Empire and the fourth son the Great Khan Möngke. Asutai was like his father a member of the Templar Order.

He followed his father during his campaign against the Song Empire in China, an was the one who brought back Mongke's body to Mongolia, after the Great Khan was killed by the Assassins during the siege of the Diaoyu Fortress in 1259.

Impressed by the skills of Bayan, an officer who crippled the Assassin while she fled, Asutai later recruited him both into the Keshigs, the Imperial Guard, and the Templar Order.

Reference

 * Assassin's Creed: Last Descendants