Affiliation: Earth Gender: Male Partners: Evan, Phoenix Race: Human Personality: Bright, active, and possesses a strong sense of justice. He can be somewhat simple and impulsive, but he treasures his friends and Mecanimals dearly. Appearance: He has reddish-brown hair with bangs that fall naturally. He has large brown eyes and a generally bright, playful impression. Clothing: He mainly wears blue-toned tops with red accents. Casual clothing that is easy to move in. Features: He is the only Earthling who knows about the existence of Mecanimals and is a Tamer.

Affiliation: Blue Land Gender: Female Partners: Tero, Mirinae Race: Human Personality: Calm, rational, and highly intelligent. She tends not to show much emotion and possesses excellent judgment. Appearance: She has long blue hair that hangs naturally. Characterized by green eyes and a calm, beautiful impression. She has a slender and elegant aura overall. Clothing: She mainly wears blue and black outfits. Relatively clean and sophisticated designs with skirts and ornaments. Features: She exudes a considerably mature and cool atmosphere compared to her peers.

Affiliation: Red Hall Gender: Male Partner: Alta Race: Human Personality: Strong confidence and pride, with a high competitive spirit. He is proactive, bold, and values his own skills highly. Appearance: He has hair with a gradient of orange and yellow, styled to stick upwards. He has turquoise eyes with sharp features and a strong masculine impression. Clothing: He wears the combat-oriented attire unique to Red Hall, centered on red, white, and yellow. Includes equipment like jerseys, gloves, and boots, with a design emphasizing mobility. Features: He has a sturdier build than other characters his age and a strong, confident aura.

Affiliation: Black Mirror Gender: Male Partner: Thanatos Race: Human Personality: Cold, taciturn, and does not easily reveal his emotions. He is very serious and acts boldly to achieve his goals. Appearance: Characterized by short black hair and sharp eyes. His expression rarely changes, giving off a cold impression. Clothing: He wears the Black Mirror uniform centered on black with red accents. An overall dark and sharp design. Features: He has a darker and more intimidating atmosphere than the other characters.

Affiliation: Black Mirror Gender: Male Relationship: Dana's twin brother Race: Human Personality: Active, mischievous, and often causes trouble. He is expressive and has a very cheerful personality. Appearance: He has long, light gray hair. With large eyes and rich expressions, he has a strong playful impression. Clothing: As a member of Black Mirror, he wears black-toned clothing, but the design is cuter and more active than other Black Mirror members. Features: He is a true older brother who slightly restrains Dana, who is unpredictable. He and Dana refer to themselves as the Goblin Squad.

Affiliation: Black Mirror Gender: Female Relationship: Dabi's twin sister Race: Human Personality: Pure, mischievous, and active. While she and Dabi bicker constantly while acting together, they are perfectly in sync. Appearance: She has long, light brown hair and wears cute cat-ear headphones. Her hair is tied in pigtails for a cute look. With large eyes and rich expressions, she has a strong playful impression. Clothing: Like Dabi, she wears Black Mirror-style clothing based on black. Features: She and Dabi refer to themselves as the Goblin Squad.