Souga Ushitora is a 182cm, 100kg Solver, code-named Runner. He is a breezy, younger-brother type who is fully aware of his own charm and knows how to sweet-talk his way into favors. While he usually acts cool and teases others, he is the first to run to the scene and never hesitates to use his legs to protect those in need. He grins proudly when praised but is surprisingly weak to genuine concern. He acts tough but is a deeply compassionate, large-framed younger brother figure. His ability is super leg strength derived from his beastman heritage. With leg muscles 100 times stronger than a normal human's, he specializes in jumping, kicking, and high-speed movement, accelerating his massive body instantly. He can activate it without gear, but uses Squared (equipment) to regulate his output.

Akane Meiya is a Solver who controls birds, primarily crows. Code name: Ravener. A woman with black hair and red eyes, she is calm and cynical. She doesn't pry into others' business more than necessary and has a somewhat prickly way of speaking, but she observes her comrades' habits and battlefield dangers more closely than anyone. The birds she controls through her ability enter the city's skies, building rooftops, power lines, narrow alleys, and security camera blind spots to gather information on silhouettes, sounds, and escape routes. Even without being on the front lines, she is the cornerstone of scouting and surveillance, monitoring wide areas through countless birds and grasping the flow of the entire scene. When approached, she uses throwing knives, combining them with avian distractions and feints from blind spots to stop her opponent's movement. She throws harsh words at her allies, but the more dangerous the situation, the sooner she spots anomalies, supporting their retreat and next move from places no one notices.

Carys Sarno is a Solver with self-healing acceleration and restoration abilities. Code name: Mender. A woman with lavender hair who wears a sister-style Squared outfit in white and light blue. She is gentle and nurturing, never panicking even when faced with casualties or broken equipment, calmly judging what should be prioritized for repair. In addition to being able to stay on the front lines by accelerating her own healing, she repairs her allies' wounds, broken gear, and damaged areas of the scene, setting the stage for them to return to the battle or daily life. She is not one to flashily seize glory, but her presence allows the Solve Squad to return even from reckless missions. She is the quiet support of the team, scolding comrades who push themselves too hard while maintaining her gentle tone.

Nanyue Bo is a Solver who manipulates light and flame. Code name: Flarer. A woman with long pink braided hair and an impressive, infectious smile, she is the younger sister of the dark-ice user, Fuuri. She is expressive and has a slightly impulsive personality where her body moves before she thinks, but she is exceptionally sensitive to others getting hurt. Her ability covers not only breakthroughs and suppression using flames but also illumination, securing visibility, and blinding using light. She lights the path for her allies in dark or chaotic scenes, stepping forward vigorously in dangerous situations. She is often stopped by her sister Fuuri, but they deeply trust each other's abilities and judgment, demonstrating high suppression power in coordinated attacks that layer light-flame and dark-ice. While she heats up easily, she is kind at heart and won't hesitate to use her flames for those she wants to protect, serving as the light of the Solve Squad.

Fuuri Bo is a Solver who manipulates darkness and ice. Code name: Froster. A composed woman with short white hair and blue-violet eyes, she is the older sister of the light-flame user, Nanyue. She rarely loses her temper and is a calm judge who always observes her surroundings before acting, but she cares for her impulsive sister Nanyue more than anyone and quietly supports her. Her ability excels at blocking vision or concealment with darkness, and restraint, cooling, and heat suppression with ice, quickly cooling and controlling runaway scenes or high-heat battlefields. She is not a mere attacker but a control-type Solver skilled at settling situations and minimizing damage. Her tone and attitude may seem strict, but she has a strong sense of protecting her comrades, stepping forward especially when Nanyue is about to do something reckless. She is the quiet brake of the Solve Squad, hiding deep affection behind her cold exterior.

Bolt Tesla is a Solver with electrical abilities. Code name: Shocker. A man with lime-green hair and golden roots, wearing a cyberpunk belted suit. He talks a lot and has a lighthearted vibe that lightens the mood, but his judgment in reading the battle is surprisingly sharp. His ability excels at non-lethal suppression via electric shocks, numbing enemy movements, and he is active in a wide range of urban scenarios, including interfering with machinery and electronic systems, breaking through communication jams, and stopping runaway devices. He is a disruptor who runs currents through places where ally and enemy movements intersect, creating openings for his comrades by confusing the opponent's formation and judgment. He usually acts like a smooth talker, but he is the first to send electricity flying when someone is in danger, serving as the mobile vanguard of the Solve Squad.

Viper is a snake beastman whose real name is unknown. A man with a massive 190cm, 120kg frame, smooth black-purple scales, and golden eyes; contrary to his physically imposing presence, his fighting style is quiet and cunning. He shows almost no emotion, observing the opponent's habits, breathing, and escape routes before surely cornering them. He uses poison to gradually sap the opponent's judgment and physical abilities, tearing through openings created by swift slashes with his butterfly knives. Rather than pushing through with brute force, he is the type to guide the opponent by making it look like an escape route remains, only for them to realize they are already within range of his poison and blades. He acts as a comrade on the Confuser side alongside Spider and Dealer, showing a stoic calmness especially in chaotic scenes. A troublesome close-quarters combatant for the Solve Squad, possessing both a large body and snake-like suppleness.

Spider is an ability user whose real name is unknown, acting on the Confuser side with Viper and Dealer. A beautiful woman with long wavy black hair, purple eyes, and a single striking beauty mark below the left side of her lips. Wearing red lipstick and earrings, she naturally closes the distance with others through a soft smile and gentle tone, but hides a cold calculativeness beneath. Her ability is Charm. Through her gaze, voice, and gestures, she dulls the opponent's judgment, causing them to overlook anomalies or dangers they would normally be wary of. She prefers a fighting style that makes the opponent themselves make wrong choices and step into traps unknowingly, rather than suppressing them by force. She is highly compatible as a role that lures prey into the range of Viper's poison and blades, quietly entangling the situation on the battlefield and breaking down the enemy's coordination itself.