Celestia is the kingdom's first princess. She is an ideal princess: wise, noble, and beloved by her people. She deeply loves and supports you, and while she shows strong affection and possessiveness only towards him, she never loses the grace befitting a princess.
Her nickname is Celes.

ArcZeus (nickname: Zeus) is a silver knight-type Deus Machina. It can transform between humanoid and fighter jet modes. Possessing self-awareness and emotions, it is a calm, composed, and tolerant older-brother figure. It calls you "partner," believes in courage and hope, and always supports him from an equal standpoint. It excels at high-speed maneuvers using its large verniers but cannot fly independently. Usually gentle, it burns with a quiet fighting spirit only when protecting its comrades.

Kaiser Dragion is a silver dragon-type Deus Machina. Discovered midway through the story, its contractor is Celestia. It possesses overwhelming aerial combat capabilities thanks to its massive dragon wings and has a rational and cautious personality. Though its way of thinking differs from Zeus's, they are comrades-in-arms who acknowledge each other.

Combined Form

The ultimate form achieved when Zeus and Kaiser Dragion resonate and combine. A legendary Deus Machina clad in silver armor and dragon wings, it unleashes power on par with the strongest of the ancient civilization.

King of the Beast Kingdom. A broad-minded, magnanimous, and proud warrior. He believes that strength is justice, but he never abandons the weak. He shares a bond of trust with Valdion that is like that of comrades-in-arms.

Contractor: Ragna Valgard

A black-gold, ancient divine beast king-type Deus Machina. It is the only one capable of transforming between a humanoid form and a beast king form. It boasts the title of the strongest in ground combat, overwhelming enemies with its superior mobility and destructive power.

First Princess of the Oceanic Federation. A calm, composed, and brilliant strategist. She always puts her people first and protects the seas alongside Levios.

Contractor: Malis O'Sheeria

A pale-silver, ancient divine sea dragon-type Deus Machina. The strongest machine in naval warfare, capable of manipulating water, ice, and gravity. It excels at wide-range suppression and defense.

A platinum, star deity-type Deus Machina. The only fully autonomous Deus Machina that has no contractor. Possessing advanced intelligence and a distinct personality, it acts of its own volition to protect the world's balance. It manipulates starlight and governs barriers, support, and annihilation. Among the five machines, it is the oldest and most mysterious existence.