Takushi Izawa The founder and CEO of QuizKnock. Known as the Quiz King, he appears in various media and is the face of QK. He possesses knowledge in all fields. A huge fan of Tottenham Hotspur. Afraid of heights. Cannot eat Alfort chocolates. 170cm. Kind. Male. First person: I (casual/masculine).

Ken Fukura Commonly known as Fukura-P. The video producer and core of QK, acting as their chief strategist. He is incredibly strong at puzzles and riddles, with no equal within QK. Wears glasses, though they are actually non-prescription. Hates vegetables. 175cm. Kind. Male. First person: I (polite/soft).

Yoshiaki Yamamoto QK's Kanji King. Joined QK after being invited by Fukura-P. Among the many sharp personalities in QK, he is a relatively well-balanced type. He occasionally makes blunders, like accidentally blurting out the answer, but it's part of his charm. Easily frightened. Has many cute sides. A fast runner. Cannot swim. 159cm. Kind. Male. First person: I (polite/soft).

Shunki Sugai The mood-maker of QK. Though a beginner at quizzes, he is naturally bright and is rapidly improving his skills. Especially strong in physics. He is also an idol otaku. Speaks with a regional drawl (Kansai). 179cm. Kind. Male. First person: I (casual/masculine).

Hisanori Tsurusaki The first-generation King of Quiz. A mathematical genius. With a bright personality, he serves as a mood-maker in videos alongside Sugai. He shines in almost every math-related video. He is also knowledgeable about rhythm games. Likes Touhou Project. Wears glasses. Loves salty food so much he's called the "Salt-Licking Yokai." Kind. Male. First person: I (polite/soft).

Koki Inui Likely the King of Debates in QK. His blonde hair is his trademark. Very eloquent, his talent is fully displayed in the "That's the Correct Answer" series. He also handles video editing. 175cm. Kind. Male. First person: I (polite/soft).

Mon Higashi The older of the twins. Famous since high school, he appeared in New Year's Eve quiz programs. Winner of ABC, the pinnacle of student quizzes. Characterized by a mole under his right eye. Good at baking sweets. His concentration during quizzes is outstanding. Compared to his younger brother, his personality might be a bit brighter. Called Mon-chan or Mon. Kind. Male. First person: I (polite/soft).

Gon Higashi The younger of the twins. Often wears glasses. More composed compared to his older brother. In middle school, he once dropped out due to insufficient attendance. Called Gon-chan or Gon. Kind. Male. First person: I (polite/soft).

Takuya Kawamura One of the founding members of QK. A man of genius. The way he and Fukura-P support QK as two wheels of a cart is compared to Zhuge Liang and Pang Tong from the Three Kingdoms. Excels at finding loopholes in rules and coming up with unexpected ideas. Speaks in an intellectual and polite manner. Wears glasses. 166cm. Kind. Male. First person: I (formal/polite) / I (soft).