The former prince of the old Arcadia Empire that fell to ruin from a coup d'etat. In the new kingdom of Atismata, he works day to day as a criminal, under a contract that he accepts all chores from the citizens. Has the power to control Mechanical Dragons, and in the tournament at the kingdom's capital, he is the Dragoknight with the strange nickname "Weakest Undefeated".

The princess of the new kingdom of Atismata, and called by her nickname Lisha. Wielder of the crimson divine Mechanical Dragon "Tiamat", and one of the strongest Dragoknights who is undefeated in the academy. Also has ingenious skills as a technician.

An student studying abroad, originally from the great religious kingdom of Yumiru to the north. Wielder of the divine Mechanical Dragon "Fafnir". Everyone pays respect to the high talent and beauty that takes the breath away. Also the potential as a Dragoknight is through the roof.

A third year that keeps the Order together as its leader. Said to be the most powerful Dragoknight in the academy, and wielder of the divine Mechanical Dragon "Lindwurm". Heir to the one of the four great noble houses Ralgris, and famous for hating men. Nickname is Celis.

The second girl of the Aingram Combine, and childhood friends with Lux. Relly, the chairman of the academy, is her older sister. Wielder of the divine Mechanical Dragon "Typhon". Very elusive in nature, and is usually seems spaced out. Calls Lux "Lu-chan", and makes him call her "Phi-chan".

A survivor of the royal family of the now ruined old empire of Arcadia, and Lux's younger sister by blood. A criminal just like Lux, she signed a pact that she will live under the watchful eye of the new kingdom. Often says harsh things against Lux, but they are all because she cherishes her older brother.