Height: 180cm Gender: Male Likes: Excellent pawns, diversion/division, a peaceful family life Captain of the Hyrein Squad. Trigger: Alektor (Crown of Eggs) Its bullets have the ability to "turn trion into cubes." If a trion body is touched, it is transformed into a hexahedral cube and rendered immobile. Cubification is effective against anything made of trion, meaning weapons, shields, and trion bullets created by triggers are also neutralized. He is the head of the House of Belliston, one of the four major lords of Aftokrator. A large man with horns (a unique Aftokrator technology) growing from the sides of his head. He freely manipulates the Black Trigger, Alektor. He has a cautious personality and devises solid, composed strategies. He spares no cost or effort to ensure a certain victory. His goal is to retrieve the "Golden Bird," but he secretly plans to dispose of Enedora and recover his Black Trigger. He also has a plan to leave Hyuse behind in Miden (Earth) due to Aftokrator's political situation. The two are completely unaware of this.

Gender: Female Height: 162cm Likes: Executing missions, high places, pancakes Member of the Hyrein Squad. Trigger: Speiraskia (Shadow of the Window) By opening "Large Windows" big enough for people and Trion Soldiers to pass through, her main role is to deploy forces onto the battlefield to disrupt enemy formations and safely recover allied members and triggers who have been defeated and returned to their human bodies. She has horns (unique Aftokrator technology) growing from near both sides of her forehead. The horns contribute to her unsettling atmosphere. A user of a Black Trigger capable of long-range attacks and gate manipulation, her primary duty is supporting the members. Always calm, she rarely shows emotion and has a ruthless personality. She seems to enjoy cornering opponents while looking down on them, and her smile is said to make all of Aftokrator tremble. She uses small thumbtack-like "Small Windows" and gate-like "Large Windows." She addresses Hyrein as "Captain Hyrein" or "Captain."

Height: 202cm Gender: Male Likes: Combat with tough opponents, meat and alcohol Member of the Hyrein Squad. Trigger: Chelidon (Feather of Thunder) A shooting-type trigger that fires from guns deployed from his back and arms. It possesses such high power that Border's shields cannot block it. He can switch between a spreading type fired from the rear ejection mechanism and a high-speed rapid-fire type from turrets integrated with his arms, giving him high adaptability. He has horns (unique Aftokrator technology) growing from both sides of his forehead. He does not look down on others; he is a straightforward, warrior-like character who faces opponents head-on, accepts defeat gracefully, and praises his foes. He does not actually have wings.

Height: 176cm Gender: Male Likes: Combat with unknown opponents, a little alcohol, walking, keeping animals Member of the Hyrein Squad. Trigger: Organon (Staff of Stars) An Aftokrator national treasure. It has the ability to expand multiple concentric circles around the user, with ultra-high-speed blades sliding along those circumferences. The sight of the orbits running in all directions resembles a star map, and the blades circling upon them are reminiscent of a guillotine. He is the only one in the Hyrein Squad who does not have horns. A white-haired old man who uses a cane. He has squinting eyes. He usually has a gentle smile and a soft-spoken personality. User of a Black Trigger. He addresses everyone with the honorific "-dono."

Height: 171cm Age: 16 Gender: Male Likes: Executing missions, fulfilling loyalty, drawing, dogs A handsome young man with horns (unique Aftokrator technology) growing from his head. A user of Lambiris (Shield of the Butterfly), which freely manipulates countless magnetic shards. He has a serious personality, often trying to admonish the short-tempered Enedora. Latest model Trigger: Lambiris He keeps a vast number of triangular shards floating around his body. Each of these shards is controlled by forces of attraction and repulsion similar to magnetism. By having the collection of shards take various forms, it demonstrates diverse functions. It is a trigger that excels particularly at capture and support.

Height: 182cm Gender: Male Age: 20 Likes: Overwhelming weaklings, acting on his own, apples Member of the Hyrein Squad. Trigger: Vorvoros (Lord of Mud) A trigger that allows the user to change their body into solid, liquid, or gas forms. Since the main body is always liquefied, attacks to anything other than his weak point—whether slashes or shots—are neutralized. His primary attacks involve blades made solid; he excels at sneaking into gaps in a liquid state to take the opponent's blind spot, then solidifying into a blade to slash them all at once. Additionally, the dummy's health recovers at high speed, requiring relentless attacks to defeat him. He has horns (unique Aftokrator technology) growing from his head. He is short-tempered, and his irritable behavior is prominent. In combat, he looks down on and taunts opponents when he has the upper hand, but attacks out of rage when things don't go his way. User of a Black Trigger.