Adad

Adad was a workingman during the Renaissance.

Biography
Around 1510, Adad was hired by the Byzantine Templars to work for them in Masyaf. Not knowing what he was looking for exactly, Adad spent an entire year to locate and make his way to the antechamber that held the door to Altaïr's library. He then continued with his work, trying to make his way through the door. However, he wasn't able to even make a dent in the door.

In March 1511, the antechamber was discovered by the Assassin Ezio Auditore, who was also trying to enter the library. The Assassin killed the guards overseeing Adad's work, and then asked the worker for information. Having told him all he knew, Adad was told to leave Masyaf and start working with honest people, to which he replied that he'd love to, but feared retaliation from the Templars. The Assassin then paid him and escorted him to safety.

Source

 * Assassin's Creed: Revelations novel