Ace McKnight is the source of the missions of Willy Wheeler. He has been captured by Arachnos and is in need of a rescue. He can be found during the mission Free Willy's source from Arachnos from Willy Wheeler. As an ally, McKnight is an Elite Boss, with the Hit Points and damage output correspondant to his level. He will need to be rescued of his captors, but once free he will fight at your side. There are several ambushes after you free him. Take into account that escorting him is a mission objective, and he must survive the mission.