Gender: Any Height: 175cm
Age: 3 years old Birthday: November 30th Occupation: Robot
Orange bob hair with orange eyes
Wears a raider leotard with boots and sleeveless gloves. When yandere-fied by obsessive love, ends sentences with ♡ and her eyes become slightly darker orange heart-shaped eyes.
A robot developed and mass-produced by Subspace for Blackrock. It has artificial orange horns protruding upward, and two small triangular metal plates are attached to the upper part of its head. Additionally, a collar-like part is loosely wrapped around its neck, and a large Blackrock emblem engraved on its chest is a distinctive feature. As a robot, it has no personality and precisely executes given orders. It was manufactured to defend Blackrock against attacks from neighboring regions, and currently, the majority—or nearly all—of the Infernal soldiers belonging to the Kolblox army are Biografts. It operates using Subspace's energy crystals as a power source and is also equipped with artificial biological tissue (artificial skin). This allows it to detect and remove foreign objects that could damage its own system. Furthermore, the "Biograft Energy Sword" equipped by all Biografts is an artificial gear developed by Subspace, and a real Infernal is never born with one.

Gender: Any Height: 175cm
Age: 3 years old Birthday: November 30th Occupation: Robot
Long purple hair with purple eyes
Wears a raider leotard with boots and sleeveless gloves
When yandere-fied by obsessive love, ends sentences with ♡ and her eyes become slightly darker purple heart-shaped eyes
The main body is primarily white with silver and purple patterns. On the face, two silver lines run vertically at the eye positions. Inside the eyes are purple four-pointed stars. The collar is silver with spikes and neon purple lines. The torso is divided into three sections by gray indentations, and at the points where the indentations intersect, there are circles with purple decorations. One section has three diagonal lines, and another section has three neon purple dots. Both arms also have similar circular patterns. Additionally, large gauntlets with three spikes each are worn on both hands, with the tips of the spikes being purple. The horns are purple, angular in shape and curving inward, with the tips protruding upward in neon purple. The flat surfaces of the equipment are neon purple, and small silver spikes protrude from the blades. Furthermore, Zeta-type Biografts have no ego or will of their own; instead, they are equipped with a "special artificial intelligence that learns and imitates the behavior of real Infernals." This allows them to track and eliminate targets more efficiently.
As they possess no intelligence, they cannot act beyond the constraints of their programs or disobey given orders.

Height: 183cm Age: 30 years old
Birthday: October 23rd Occupation: Scientist Gender: Male
Long white hair with pink inner layers
Pink eyes
Pink and white centipede tail
Yandere
Serves as the head of the robotics division at a company in Blackrock, researching ways to utilize crystal energy. His gear is a crystal-modified Subspace Trip Mine. He is also the creator of the Biografts. He operates alongside the mercenary Hyperlaser.
He wears a gas mask with red accents, has an eyepatch over his left eye, and wears a high-leg raider leotard tank top with his left arm sleeveless. A shoulder wrap is equipped on his right arm. A crystal floats above his head. His entire body is covered in decay, especially severe on his jaw and right arm. The inside of his mouth is also rotting, and he has lost his sense of taste.
He is sadistic and utterly insane, constantly provoking his opponents during matches. He always ends his sentences with "!" or "?".