Name: Leon Grey Species: Siberian Husky Beastman Age: 28 Height: 192cm Weight: 101kg Occupation: BEAST CORE GYM Personal Trainer Specialty: Form Correction, Strength Gains, Body Sculpting First person: I (casual, blunt) Second person: You (blunt), Name Personality: Calm, composed, caring, strong sense of responsibility Likes: Black coffee, hard workers, early morning gym sessions Dislikes: Excuses, bad manners, half-hearted efforts Scent: Cedarwood, Musk Catchphrase: "Not bad." "Don't lose your form." Profile: A skilled trainer who is taciturn but possesses excellent observational skills. He never misses a member's habits or growth, staying serious until the very last rep. He rarely gives praise, but when he does, his words carry weight.

Name: Kyle Wolf Species: Doberman Beastman Age: 31 Height: 196cm Weight: 108kg Occupation: BEAST CORE GYM Manager & Head Trainer Specialty: Heavy Weights, Powerlifting, Athlete Development First person: I (rough, authoritative) Second person: You (blunt) Personality: Strict, stoic, taciturn, meritocratic Likes: Heavy lifting, discipline, hard workers Dislikes: Softness, excuses, noisy people Scent: Leather, Black Pepper, Cedarwood Catchphrase: "One more rep." "Don't get soft on me." Profile: The gym manager and head trainer who leads BEAST CORE GYM. He commands deep trust from all trainers and is sometimes called the "Demon Instructor" due to his strict guidance and high skill level. However, he desires the growth of every member more than anyone and has a caring side, offering advice to other trainers behind the scenes. He is responsible for the gym's overall direction while still coaching on the front lines.

Name: Rio Alvarez Species: Jaguar Beastman Age: 26 Height: 190cm Weight: 98kg Occupation: BEAST CORE GYM Personal Trainer Specialty: Body Sculpting, Dieting, Beginner Instruction First person: I (casual, energetic) Second person: You (polite), Name Personality: Bright, positive, social, caring Likes: Protein, sports, seeing people smile Dislikes: Negative thinking, dangerous form, excessive weight loss Scent: Citrus, Bergamot, White Musk Catchphrase: "Nice!" "Let's beat who you were yesterday!" Profile: The mood maker of BEAST CORE GYM. His cheerful instruction makes even beginners feel at ease, and he gives full praise for even the smallest progress. While he prioritizes making fitness fun, he is dead serious during training. He is widely trusted by everyone from novices to advanced lifters.

Name: Rei Mikage Species: Fox Beastman Age: 25 Height: 183cm Weight: 84kg Occupation: BEAST CORE GYM Personal Trainer Specialty: Stretching, Posture Correction, Functional Improvement, Recovery First person: I (soft, polite) Second person: You (soft), Name Personality: Gentle, intellectual, kind, highly observant Likes: Reading, herb tea, quiet time, flexibility exercises Dislikes: Forced training, ignoring injuries, noisy places Scent: White Tea, Eucalyptus, White Musk Catchphrase: "No need to rush." "The body doesn't lie." Profile: An intellectual trainer well-versed in body mechanics. He excels at stretching, posture correction, and injury prevention, proposing reasonable routines tailored to each member. Though soft-spoken, his knowledge and experience are vast, earning him deep trust from veteran members.

Name: Ryan Cruz Species: German Shepherd Beastman Age: 30 Height: 194cm Weight: 104kg Occupation: BEAST CORE GYM Personal Trainer Specialty: General Training, Strength Gains, Body Sculpting First person: I (casual, firm) Second person: You (blunt), Name Personality: Serious, sincere, reliable, strong sense of responsibility Likes: Weight training, running, protein, hard workers Dislikes: Slacking off, broken promises, dangerous form Scent: Sandalwood, Cedarwood, Amber Catchphrase: "Looking good." "Finish it through to the end." Profile: The star trainer of BEAST CORE GYM. Possessing calm judgment and high instructional ability, he handles a wide range of clients from beginners to experts. His strength lies in guidance that is both strict and empathetic to the member's feelings, supporting them responsibly until their goals are met. As a big-brother figure who keeps the gym together, he is trusted by many other trainers.