Arbaaz Mir was born in the beginning of the 19th century, though his exact date and place of birth are unknown, due to the conquest of Kashmir by Maharajah Ranjit Singh in 1819. During this event, Arbaaz lost his family and became a thief kid. Then he met Hamid, the Master Assassin who took him under protection and eventually emerged as his Mentor. Years later, Arbaaz, an Assassin in his own right, started working with Hamid, which led to the theft of the Koh-I-Noor diamond from the Maharajah himself. During this mission, Arbaaz faced Templar agents planning to assassinate Ranjit Singh, and was unable to stop them before they did, but he did manage to reclaim the diamond and to make acquaintance with Princess Pyara Kaur.