The Legendary Titans are an incredibly rare, powerful type of Titan which were originally controlled by Lord Casterwill and his family and whose Rings and Amulets were later hidden with greater safeguards than the Amulets of any other Titans. The Legendary Titans find their places in the legends of many ancient civilizations and were sometimes considered gods. If a Seeker attempts to use a Legendary Titan without the Amulet of Will or without passing the proper Casterwill test, they may be put under a powerful curse. Three Legendary Titans, Tao, Behemoth, and Araknos, are involved in a ritual to summon Overlos from the Amulet of Will.