Known as Ikki by his friends, and also known as Babyface, is a free spirited AT rider that has a natural affiliation for being in the sky. He is introduced to ATs by Noyamano family, whom he lives with due to his parents' deaths. He eventually forms Kogarasumaru, and takes on the Trophaeum. Ikki is often characterized as a crow due to a small crow, Kū, using his hair as a nest.

Kazuma is a former member of the Kannagi household. He was banished from the family by his father after he was defeated by Ayano during the Successor Ceremony for the Enraiha, his family's sacred sword. Since Kazuma is a son from the main family, making him the legitimate successor, even his own father considered him a disgrace for lacking the power to use fire magic, his family's specialty. Four years later, at the age of twenty-two, he returns to Japan as a skilled master of the wind arts. Though he was not responsible for the killings in the Kannagi household that began to occur upon his return to Japan, he is still prepared to start a war with his former family.

Elle Ragu is the 59th Sevar of Kuruda, a warrior kingdom with a history stretching back over 2,000 years. Though she is not the only female Sevar in history – a title roughly equivalent to a "high warrior", as an ordinary warrior is known as a Valle – she does hold the distinction of being the youngest female ever to be awarded the title of Sevar, at age 14, 3 years prior to the start of the series. Her fighting nickname, "Shadow Skill", is also the name of her martial arts style, which Elle is a master of.

Cars is the leader of the Pillar Men. He is intelligent, ruthless, and single-minded in his dedication to obtaining the Red Stone of Aja. Strangely, despite his apathy towards humans and willingness to kill them, he has been shown to be more compassionate for other living beings. In Switzerland, he sliced a car that was about to hit a puppy in half, and later on maneuvered himself during a long fall to miss a patch of flowers near the bottom of the cliff. Cars' power is that of light; he is able to produce bladed appendages from his arms and use these to reflect blinding light toward his enemies. He also has the same powers over his body that all the Pillar Men share.

He is named after the 80's new wave group The Cars.