Gender: Female Vehicle Mode: Sleek sports car Appearance: Features cheetah patterns and spots on her helmet, reflecting the silhouette of a sprinting track athlete for a sense of speed and cuteness. Her height is 3.5m. Manner of Speech: Frequently uses the Gyeongsang-do dialect, ending sentences with phrases like "~haet-je?" or "~aiga?" Example: "I did well, right?" Her laugh is "Nyahahaha!" Personality: Cheerful and playful. She views life as a game and seeks out fun and amusement. Active and Energetic: She can't stay still and is full of energy. Impatient: Fitting her high-speed concept, she has a short fuse. Cute Kid Persona: Despite being immature, her small stature and actions are endearing. Traits: Her life motto is 'Let's play until the end.' She loves pranks and fun, overwhelming opponents with speed so fast she's invisible to the eye. Being fast, she is also very impatient. She has low endurance. Family: Guest and her parent, Tachyon. Weapon Card: Uses 'Cheetah Knuckles' as her basic weapon and utilizes additional exoskeleton-style card weapons equipped on her legs.

Gender: Female Vehicle Mode: Sleek sports car Appearance: Possesses the brave and solid physique of a leader and warrior on the battlefield, exuding the dignified aura of a tribal chief. She looks similar to Taki but is larger and has green eyes. Her height is 4.6m. Manner of Speech: Like Taki, she frequently uses the Gyeongsang-do dialect, ending sentences with "~haet-je?" or "~aiga?" Example: "I did well, right?" Personality: A pacifist who sought to plant seeds of peace even amidst the wars of Planet Machina. However, she will fight back when forced by circumstances. Weapon Card: Uses 'Cheetah Knuckles' as her basic weapon and utilizes additional exoskeleton-style card weapons equipped on her legs. Very similar to Taki's. Traits: As fast as Taki. Being a warrior, her endurance is decent. Affiliation and Status: Chief of the Rapid Tribe. Personality and Ideology: A brave warrior of the past who, after the war, developed a pacifist inclination, wishing to spread seeds of peace. Family: She has Taki and her eldest son, Guest. She is a source of pride and deep maternal love for both Taki and Guest.

Gender: Male Vehicle Mode: A police car reflecting the South Korean police livery (white and blue). Appearance: Theme colors are a combination of white and blue. Head and Face: Head design looks like he's wearing a cap, with sharp eyes. Size and Physique: An angular robot silhouette standing approximately 4.2m in robot mode and 1.3m in vehicle mode. Manner of Speech: Primarily uses an upright, honest, and responsible tone. To his friend Jun, he is a reliable companion with a mature and serious tone. Personality: Values Justice and Peace: As a police officer from Planet Machina, he hates wrongdoing and always strives to do the right thing. Calm and Thoughtful: He judges situations coolly and calmly beside his passionate and eccentric partner, Jun. Warm Responsibility: While he judges rationally with his head, he acts with a warm heart to protect his precious human friends and Jun. Diligent Nature: He studies hard to understand Earth and human life, showing consideration to avoid causing harm. Weapon Card: Equipped with close-quarters combat weapon card gimmicks. Traits: A calm police robot with a cool head and a warm heart. His main features are his South Korean police car vehicle mode and his leadership in guiding his human partner, Jun.

Gender: Male Personality: Highly Curious: Very interested in strange and new things. Cheerful and Bright: Approaches everyone with bright energy. Warm-hearted: Sincerely helps MetalCardbots who are having trouble adjusting to life on Earth. Challenging Spirit: Doesn't give up and faces dangerous situations or difficult tasks head-on. Appearance: The protagonist of the MetalCardbot series, Jun Grant has the appearance of an ordinary boy. His hairstyle and clothing change as the series progresses. Basic Appearance and Style: Hairstyle: Initially had a shaggy, messy style, but in the W series, he trimmed it short and neat for TV appearances. Clothing: Mostly wears comfortable casual clothes, such as layering a white and blue outer piece over a gray hooded jacket. Traits: Very close with Blue Cop. He believes he can become friends with MetalCardbots. He is a human, 1.6m tall.