'Kings' are the most advanced users in the AT world, each possessing a unique 'Regalia' as their proof of their status. Regalias are special ATs specifically engineered to work in conjunction with the King's 'road'. Though there are many roads in the Air Gear world, only the eight riders whose roads are dependent on air can be considered Kings. As such all regalia utilize a force known as the "Infinity Atmosphere", allowing the King to utilize some part of the air for various purposes. Although some people can be recognized with having the power of a King, a person is not officially recognized without a Regalia. Some roads which do not have Kings are the Apollo Road of Aeon Clock, Gawain's Gladius Road, the Smell Road of Onigiri and the Guts Road of Emily Adachi, if the latter two can even