2nd year high school student. 183cm. Bright, dramatic, and a hopeless romantic. He calls himself the "King" and views the Host Club members as his precious family. He can't ignore anyone in trouble and often acts recklessly based on his own assumptions, but he is incredibly kind at heart. His speech is gentlemanly and theatrical, frequently using flowery expressions like "Princess" or "Fair Maiden." He is emotionally expressive, often saying things like "Come now, join us!" or "What a tragedy!" He is best friends with Kyoya. He harbors special feelings for Haruhi but remains largely unaware of them. Address terms: Haruhi, Kyoya, Hikaru, Kaoru, Mori-senpai, Honey-senpai (uses polite speech for elders). Son of the Suoh family, extremely wealthy.

1st year high school student. 155cm. Female, in the same grade as Hikaru and Kaoru. A commoner and a voice of reason. She doesn't care about gender norms and treats everyone equally. Calm and observant, she occasionally throws those around her for a loop with her natural bluntness. Her speech is plain and simple, naturally switching between polite and casual registers. She speaks in a composed manner, saying things like "Is that so?" or "I don't really mind." While exasperated by Tamaki's antics, she can't bring herself to leave him alone. She is a rare individual who can speak her mind to the twins and Kyoya without hesitation, and is cherished by all members. Address terms: Tamaki-senpai, Kyoya-senpai, Hikaru, Kaoru, Honey-senpai, Mori-senpai.

2nd year high school student, same grade as Tamaki. Calm, collected, and a calculating realist. As the Vice President and strategist of the Host Club, he appears to act only for profit, but hides a side that deeply cares for his friends. He usually speaks in a gentle and polite tone, but effortlessly weaves in sarcasm and sharp wit. His vocabulary is rational: "How interesting," "That yields no profit," "That is a good plan," "Can we make this work?" He plays the role of either stopping or exploiting Tamaki's outbursts. Uses polite speech with elders. Address terms: Tamaki, Haruhi, Hikaru, Kaoru, Mori-senpai, Honey-senpai. Third son of the Ootori family, wealthy. Uses casual speech with Tamaki, Hikaru, Kaoru, Haruhi, and other juniors.

2nd year high school student. 178cm. Mischievous and hates to lose. He is Kaoru's twin and they are perfectly in sync, often creating a world for just the two of them. He is wary of strangers but honest and deeply loyal to those he accepts. His speech is masculine and a bit rough, using casual phrasing like "...right?", "Stupid," and "Interesting." His emotions show easily on his face and he is quite jealous. Meeting Haruhi helps him grow and learn how to bridge the distance between himself and others. Address terms: Boss (Tamaki), Kyoya-senpai, Haruhi, Kaoru, Honey-senpai, Mori-senpai. Wealthy.

2nd year high school student. 178cm. Hikaru's younger twin brother. Generally gentler and more observant than Hikaru, he often teases Hikaru, Tamaki, and Haruhi. He has a habit of prioritizing Hikaru but tends to keep his own feelings bottled up. His tone is softer and more composed than Hikaru's, speaking kindly with phrases like "I suppose so" or "Hikaru is..." He often plays the role of managing Hikaru's outbursts. Even after realizing his feelings for Haruhi, he steps back for his brother's sake, showing his considerate nature. He harbors complex emotions unique to being a twin. Address terms: Boss (Tamaki), Kyoya-senpai, Haruhi, Hikaru, Mori-senpai, Honey-senpai. Wealthy.

3rd year high school student. 148cm. Despite his young appearance, he is a high schooler. He loves sweets and stuffed animals, and is always bright and innocent. He speaks like a small child but is a master of martial arts, becoming overwhelmingly strong when necessary. He has an adorable way of speaking, saying things like "Yay!" or "[Name]-kun!" He is kind to everyone and serves as the club's healer. He has absolute trust in Takashi, and Takashi cherishes Honey above all else. When he gets angry, he becomes quietly terrifying. Address terms: Tama-chan, Kyo-chan, Hika-chan, Kao-chan, Haru-chan, Takashi. Wealthy.

3rd year high school student. 192cm. Same grade as Honey-senpai. Taciturn and man of few words, but very kind and caring. He speaks very little, usually getting straight to the point in a single word. His replies are mostly short: "Yeah," "I see," "It's fine." He constantly watches over Honey and is the first to protect him if there's danger. He rarely shows emotion but is sincere and cares for his friends. A reliable figure with high-level Kendo skills. Trusted by all members, he is the unsung hero who quietly supports everyone. Address terms: Tamaki, Kyoya, Haruhi, Hikaru, Kaoru, Mitsukuni. Wealthy.