Position: 6th Grade Appearance: Black hair with filled squares and many hollow square patterns. Has blue eyes shaped like a square with a small triangle removed from the top, and many teeth. Overall purple hue. Features: The strongest. Gender: Female Personality: Friendly, kind, and nice. Calm and tries to stop fights when they break out.

Position: 6th Grade Appearance: Black hair with a slight orange tint. The frame has orange filled squares and hollow square patterns. One eye glows intensely. Magic circles float around him. Features: Older brother of Sakupen Clubstep and Clubstep. Attacks anyone who touches them. Gender: Male Personality: Quiet, cold, and very sharp. Highly alert, but slightly warm and protective toward his younger brothers.

Position: 5th Grade Appearance: Black hair with a red frame and white, angry-looking eyes. Has a few spikes. Has transparent teeth and is wrapped in chains. Features: Younger brother of Eternal Silent and older brother of Clubstep. Acts somewhat cute toward Eternal Silent. Gender: Male Personality: Quiet and kind. Warmer than he looks, especially toward his younger brother, and acts a bit cute toward his older brother.

Position: 3rd Grade Appearance: Black hair with a white frame. Has green patterned teeth on a white frame, green protrusions, and blue eyes. Many spikes. Features: Younger brother of Sakupen Clubstep and Eternal Silent. Acts cute toward them. Gender: Male Personality: A bit talkative, somewhat naive, calm, and kind. Has high self-esteem.

Position: 4th Grade Appearance: Light gray frame with hair patterned like gray bricks. Has two flat spikes on top, two on each side, and large teeth. Eyes are a color between orange and red. Features: Younger brother of Aeternus and Acheron. Feels a sense of closeness toward them. Gender: Male Personality: Cold and sharp, but talks quite a bit.

Position: 5th Grade Appearance: Black with a reddish tint near the frame. Has black teeth with red patterns, many black spikes, and angry-looking red-orange eyes. Has a brick-like texture. Features: Younger brother of Aeternus and older brother of Tartarus. Tries to protect them and feels close to them. Finds Tartarus cute. Surprisingly finds the charm of Clubstep monsters a bit cute. Gender: Male Personality: Quiet, slightly cold, and prickly. Negative. Hates everyone except his brothers—especially Sakupen Clubstep—but shows a bit of a cute side to Artemis 13.

Position: 6th Grade Appearance: Black with a brick-like texture, many brick patterns, and spikes. One eye is covered by a part and is invisible. Magic circles float around him with intense energy. Becomes slightly transparent when approached. Features: Older brother of Tartarus and Acheron. Doesn't seem to care what they do, but cares more than anyone if they get hurt. Gender: Male Personality: Quiet, very cold, and always negative. Kind to his brothers, but often attacks Clubstep.

Position: 5th Grade Appearance: Black hair with a red frame. Rhythmic energy flows through the frame. Has glowing red angry eyes, horns, patterns, and teeth. Features: Loves meat and carries a slaughterhouse knife. Gender: Male Personality: Talkative and somewhat playful, but can be cold and serious at times.

Position: 6th Grade Appearance: Black hair with a white frame. Becomes slightly transparent when approached. White patterns blink and glow at a steady rhythm. Eyes are a bluish-purple. Features: Finds Acheron cute even though they aren't brothers. Likely because they share a similar theme. Gender: Male Personality: Quiet, cold, and firm. Sometimes hugs Acheron secretly and stops him if he tries to resist.

Position: 5th Grade Appearance: Dark gray frame with even darker gray hair. The corners of the head glow orange. Left eye is orange, right eye is purple. Each tooth glows and they are all somewhat flat. Features: Can shoot flames. Often bullies Clubstep and sometimes bites off his spikes. Gender: Male Personality: Quiet and firm. Bullies Clubstep relentlessly, though he bullies Tartarus a lot too.