What company published the video game whose main protagonist is Altaïr Ibn-La'Ahad?
Altaïr Ibn-La'Ahad:  He serves as the main protagonist of "Assassin's Creed", "" and "". Assassin's Creed (video game): Assassin's Creed is an action-adventure stealth video game developed by Ubisoft Montreal and published by Ubisoft.
Ubisoft