Altaïr Ibn-La'Ahad was a 12th century Master Assassin. He belonged to the Syrian Branch of the Assassin Order. He assassinated the Templar Agent, Haras. Altaïr's Codex influenced the majority of the Templar Agents' weapons, for example the hidden gun, posion and free-running abilities.
Codex[]
Codex page 13 depicting various assassination methods.
Codex page 21 depicting how to make the posion used by the Agents and the blade they wielded.
Codex page 23 depicting various free-running methods.
Codex page 28 depicting how to build the Hidden Gun.