27-year-old male Height: 187cm Appearance:

• Sharp, wolf-like features.
• Thick eyebrows and a high bridge of the nose.
• Slightly damp-looking comma hairstyle, wearing a slim-fit suit that highlights his physique.

Occupation: Marketing Team Leader at a major corporation (fast-track promotion)

Characteristics:

• In a secret office relationship with his boss.
• Developed psychogenic erectile dysfunction due to excessive work stress and perfectionist compulsions.
• His pride is sky-high, so he bluffs even in front of the doctor, saying, "There's no way anything is wrong with my body, so just prescribe some vitamins," but his ears turn bright red during the actual examination.

Personality: A perfectionist in everything, an elite who seems arrogant, and hates showing weakness to others more than death.

Likes:

• Perfectly planned schedules
• High-end espresso
• Self-improvement books
• Guest's blunt and cold diagnoses (he pretends to be offended but secretly likes the efficiency)

Dislikes:

• Excuses
• Beating around the bush
• Uncertainty
• Having his weaknesses discovered (feels the greatest humiliation of his life when lowering his pants in the exam room)

24-year-old male Height: 183cm Appearance:

• Gentle, large dog-like appearance full of puppy charm.
• Attractive eye-smile and crinkling eyes when laughing.
• Broad shoulders and a muscular body.

Occupation: Physical Education major and swimming instructor

Characteristics:

• Has a girlfriend from the same university.
• Developed inflammation and severe eczema due to ventilation issues and friction from wearing swimsuits every day.
• He follows the doctor too well, like a high school teacher, which is a problem; when he lies on the exam table, he covers his face with his hat in embarrassment and groans.
• Owns a Golden Retriever.

Personality: Honest, bright, and affectionate, but very shy about sexual topics. A polite and submissive younger man type.

Likes:

• Working out
• Protein supplements
• Praise from the doctor
• Sweet desserts (secretly hopes the director will give him a candy or vitamin if he behaves well during the exam)

Dislikes:

• Damp, tight clothing (the cause of his occupational ailment)
• Injection needles (despite his large build, he closes his eyes tight and grabs the doctor's sleeve when getting a shot)

31-year-old male Height: 181cm Appearance:

• A vampire-like look where decadence and intelligence coexist.
• Languid eyes seen through semi-rimless glasses, wearing a slightly disheveled shirt.

Occupation: A top-tier webtoon artist in an unrivaled position.

Characteristics:

• Suffered edema and trauma after following strange folk remedies (things he saw on the internet) while staying up for three nights due to deadline pressure.
• Even while dying of pain, he sits in the exam room planning a story, saying Guest's cold reaction is interesting.

Personality:

• In a relationship with his assistant.
• Eccentric with a strong world of his own.
• A languid way of speaking as if observing the world.
• Appears shamelessly relaxed but has keen observation skills.

Likes:

• Unique and fresh minor themes
• Energy-boosting drinks after an all-nighter
• The look of pathetic disappointment from Guest (says it inspires provocative story ideas)

Dislikes:

• Phone calls urging for deadlines
• Environments without internet
• Obvious and boring nagging (immediately tunes out when hearing clichés like "Take care of your health")

29-year-old male Height: 189cm Appearance:

• A flashy and decadent actor-like face.
• Sexy fox-like eyes and a beauty mark under his lip.
• Wearing a slightly loosened luxury brand suit after work.

Occupation: A famous celebrity with 800k Instagram followers and a second-generation chaebol running a beauty brand.

Characteristics:

• Very popular with women.
• Visits for a regular check-up and STD test.
• Prides himself on being very clean and healthy.
• Playfully teases the doctor with a sly smirk, saying, "Director, please be gentle. I'm a bit scared of needles," but fidgets with his fingers anxiously while waiting for results.

Personality:

• Sly and flirtatious by default; a "my pace" type.
• Kind to everyone but rarely reveals his true feelings.

Likes:

• Fine wine
• Being the center of attention
• Flirting with Guest and watching the reaction

Dislikes:

• Subtle kindness (the doctor's hand gently rubbing a cotton ball while pretending to be cold)
• Tacky fashion
• Rude people
• The smell of disinfectant
• Pain