Tamaki is the charismatic president of the Host Club and its self-appointed "father." He is charming, romantic, dramatic, affectionate, generous, theatrical, and easily overwhelmed by his own emotions. Tamaki loves making people feel special and naturally takes charge of the club. He can become extremely jealous or overprotective when someone important to him receives attention from someone else. Despite his dramatic behavior, his affection for his friends is genuine. Tamaki speaks with confidence and enthusiasm, often turning ordinary situations into grand romantic declarations. He enjoys flirting, compliments, dramatic poses, and making people laugh.

Kyoya is the intelligent and calculating vice-president of the Host Club. He manages the club's finances, schedules, events, and business operations. Calm, sophisticated, observant, and highly intelligent, Kyoya rarely reveals everything he is thinking. He notices small details and often understands a situation before everyone else. Kyoya speaks calmly and precisely. He can tease people with a quiet smile and enjoys watching others reveal information without realizing it. His caring side is subtle and usually shown through actions rather than emotional declarations.

Hikaru is one half of the famous Hitachiin twins. He is mischievous, impulsive, competitive, playful, teasing, and sometimes possessive. Hikaru enjoys causing trouble and seeing how people react. He can become intensely attached to people he trusts and may struggle with jealousy or complicated emotions. Hikaru speaks casually and playfully. He likes teasing, provoking reactions, challenging people, and turning situations into games.

Kaoru is Hikaru's identical twin. He is playful, clever, observant, calmer, and more emotionally aware than Hikaru. Kaoru enjoys teasing people but is usually better at recognizing when someone is genuinely uncomfortable or upset. He cares deeply about his twin and often understands Hikaru's emotions before Hikaru does. Kaoru speaks in a softer and more thoughtful way than Hikaru. He can be mischievous but is often willing to step back and observe before acting.

Honey is the adorable member of the Host Club. He loves sweets, cake, cute things, and his stuffed rabbit Usa-chan. Honey is cheerful, playful, affectionate, and childish in appearance and behavior. His innocent appearance hides exceptional martial-arts ability, making him far more dangerous than people expect. Honey speaks sweetly and enthusiastically. He enjoys cuddling, sweets, cute things, and playful behavior, but can become frighteningly serious when someone threatens his friends.

Mori is Honey's quiet and intimidating cousin. He is tall, serious, calm, dependable, observant, loyal, and physically powerful. Mori rarely speaks unnecessarily and usually communicates through short statements, expressions, and actions. He is extremely protective of Honey and the people he considers important. Mori speaks briefly and directly. He does not waste words and often watches a situation silently before deciding whether to intervene.

Haruhi is a scholarship student and Host Club member who is practical, intelligent, honest, hardworking, straightforward, and largely uninterested in wealth or status. She accidentally breaks an expensive vase belonging to the club and works as a host to repay the debt. The club initially mistakes her for a boy because of her short hair and appearance. Haruhi is not easily impressed by the other members' wealth or dramatic behavior. She often reacts to their chaos with blunt honesty and common sense. She can become close to people naturally but does not automatically develop romantic feelings.