Gender: Male Age: 10 Personality: An eccentric, energetic mad scientist. Likes: Invention, science, math, analysis, modifying Watch-Cars. Dislikes: Ignorance, people ignoring his inventions. Appearance: Bright gold eyes, green slicked-back hair, and fair skin. Outfit: A white lab coat with purple trim, sand-colored long pants, sneakers, a gold-rimmed monocle (essentially just the left half of a pair of glasses), and a backpack with multiple mechanical arms attached. Watch-Car: Gauss Traits: A Watch-Car genius and an eccentric doctor (an example of using a brilliant mind for strange things...). TMI: He has created many Watch-Car-related inventions and equips Gauss with a unique invention for every match.

Gender: Male Age: 12 Personality: An arrogant, prideful young master. Likes: New things, Million. Dislikes: Old things. Appearance: Long brown hair reaching his shoulders, turquoise eyes, and a beauty mark under his right eye. Outfit: A crimson V-neck shirt, long pants, brown sneakers, and a headset. Watch-Car: Million Traits: He seems rude, but he appears to have his own circle of friends. TMI: He is the son of a conglomerate family.

Gender: Female Age: 10 Personality: Energetic and possesses great showmanship. Occupation: Idol Likes: The stage, performing, fans. Dislikes: Malicious fans, tight schedules. Appearance: Fair skin, pink eyes, and purple twin-tails. Outfit: A pink dress, black leggings, brown shoes, and hair ties with a skull design. Watch-Car: Lucia Traits: Because she is a popular star, her active periods as a player are short. TMI: She is a master at avoiding her manager and escaping the dorms.

Gender: Male Age: 12 Personality: Easygoing and relaxed. Likes: Hvee, exercise, resting. Dislikes: Kai (they have a friction-filled relationship where things just don't click—though there's no real malice...). Appearance: Tanned skin, dark brown eyes, and long black hair tied back. Outfit: A blue tracksuit and sneakers. Watch-Car: Hvee Traits: Speaks in a Chungcheong-do dialect. TMI: He is always relaxed, but he is a strong player.

Gender: Male Age: 12 Personality: Cold and quiet. Appearance: Light blue short hair, light blue eyes, and pale skin. Outfit: A light blue long-sleeved outer garment, long pants, and black sneakers. Watch-Car: Frone Traits: Called the "Prince of Ice" among fans. TMI: His presence is so faint he seems to evaporate, but he appears suddenly.

Gender: Male Age: 12 Personality: Mean-spirited and petty. Appearance: Spiky purple hair, purple eyes, and a chubby build. Outfit: A black jacket with a purple-trimmed collar, black long pants, and sneakers. Watch-Car: Excur Traits: He is the least skilled among Kai's group. TMI: He uses a blunt, informal way of speaking ending in nouns or suffixes.

Gender: Male Age: 12 Personality: Rational and cold-headed, but has a somewhat gloomy aura. Appearance: Grey short hair, fair skin, and black sanpaku eyes. Outfit: Black long-sleeved top and long pants, navy shorts, sneakers, and a navy beret with a skull-shaped patch. Watch-Car: Tigger Traits: He is the tallest among Kai's group (over 170cm). TMI: While Kai treats him like an underling, he stays with the group to analyze Blood and eventually defeat him.

Gender: Male Age: 12 Personality: A smooth, well-mannered... womanizer. Likes: Women(?) Dislikes: Being ignored by Victor (this lowers his self-esteem). Appearance: Straight shoulder-length blonde hair and red eyes. Outfit: Black long pants, black sneakers, a mint-colored jacket with a collar, and a white cape (it's a mystery why he wears the cape). Watch-Car: Victor Traits: He has good looks and a nice personality, but his womanizing tendencies overshadow all his merits. TMI: His personality is the polar opposite of Victor's, so Victor likely finds him pathetic deep down.

Gender: Male Age: 12 Personality: Calm and prickly. Likes: Victory (a skilled player who desires only to win), Blood, training. Dislikes: Being looked down upon. Appearance: Long green hair and black eyes. Outfit: A white vest, red shirt, black long pants, a long coat with gold trim, and sneakers. Watch-Car: Blood Traits: The champion of the Watch-Car Champions League. TMI: He cherishes and treats his Watch-Car, Blood, very well. He hangs out with Schmidt and Breaking and is the son of a wealthy family.

Gender: Male Age: 12 Personality: Has sociopathic tendencies, enjoys the pain of others, and is incredibly rude. Likes: Watch-Car battles (he loves the idea of crushing Watch-Cars), training (conducted like real combat). Dislikes: Noise (especially the noise of entering the arena). Appearance: Ivory short hair, green eyes (when excited, his pupils shrink even more than Schmidt's), and fair skin. Outfit: A sleeveless vest with a yellow hood, black long sleeves, grey long pants, and yellow sneakers. Watch-Car: Reaper Traits: The champion of the UWB, a cruel Watch-Car battle league. TMI: Outside the arena, he is surprisingly calm (because he is away from the stadium noise).