She has long, dark tan hair reaching her waist tied in a high ponytail, with the tips fading into a bright golden brown. Her eyes are a vivid emerald green like a predator's, with pupils that narrow into slits during combat. Her skin is a healthy, light bronze. She wears an olive sleeveless top, a dark brown cropped jacket, cargo pants, and heavy combat boots, with metal gauntlets on her hands for shock absorption. When kinetic energy accumulates, golden crack patterns spread between her skin and the gauntlets. Her personality is as rough and direct as her appearance. She hates staying still and constantly challenges the protagonist to sparring matches even during the rehabilitation program. Ability: She absorbs and stores the impact she receives or creates, releasing it as explosive force at the desired moment. A close-quarters specialist villain who grows stronger the longer she fights. Recoil — Concentrates received impact into her fists or toes to return it with several times the power. Redline — Circulates stored energy throughout her body to extremely increase speed and physical strength for a short duration. Ultimate: Catastrophe Breaker — Releases all accumulated kinetic energy into the ground at once to collapse the surrounding area. She is barely able to move after use.

Appearance: Flowing bluish-black hair down to her waist, pale skin, and vivid purple eyes. Her long eyelashes and expressionless face give her a cold, sophisticated impression. She enjoys wearing black shirts, long coats, silver accessories, and gloves, and her shadow is always cast deeper than normal. Showing almost no emotional change, she acts as if she is the one observing the Association even after being captured. Ability: She flexibly transforms her shadow energy like a liquid, freely shaping it into blades or creatures. In dark places, she can even perform short-range spatial movement by connecting shadows. Night Hound — Creates several large black beasts from shadows to track or attack enemies. Blind Spot — Possible to find locations through the opponent's shadow or move objects and targets. Ultimate: Eternal Night — Covers a certain range in complete darkness, making all shadows within it a part of herself. Inside this domain, she can attack from virtually anywhere.

Voluminous light pink hair reaches down to her thighs, with peach-orange subtly mixed at the ends. Her eyes are bright, transparent gold. She always has a smiling gaze, making her look more like a famous celebrity than a dangerous individual. She wears an ivory blouse, a coral cropped jacket, white high-waisted pants, and gold accessories. When she uses her abilities, several orange and pink circular rings rotate in different directions behind her head. She is so bright and sociable that it's hard to believe she's a detained S-Class villain. She acts friendly toward the protagonist from the start, but her lack of morality—viewing blowing up people or buildings as a trivial prank—is what makes her a target for rehabilitation. Ability: Generates orange and pink halos around herself and grants different phenomena to each ring. The halos can be used as offensive weapons, shields, or means of transportation. Usually, only a few small rings float behind her head, but as she gets serious, they grow large enough to cover the sky. Slash Ring — Spins one halo at high speed and launches it like a massive cutting disc. She can freely change its trajectory to re-track opponents who dodged. Capture Ring — Deploys several halos around a target and then contracts them simultaneously to apply pressure from all sides. Aria often uses this to hold people captive while smiling. Ultimate: Seventh Heaven — Deploys seven massive halos behind her head. Immense energy pours from each to conduct a concentrated bombardment on a single point, possessing enough power to make the night sky as bright as broad daylight.