Tadashi Yamaguchi

Japanese Name 山口 忠
Romaji Name Yamaguchi Tadashi
Series Haikyuu!!
Age 15
Weight 63 kg
Height 179.5 cm
Date of Birth November 10
Blood Type



A determined middle blocker from “Haikyuu!!”


Tadashi Yamaguchi, a character from the popular anime series “Haikyuu!!”, has a shy and reserved personality. He often relies on his teammates for support, but is known for his hardworking nature. Despite his generally friendly demeanor, Yamaguchi sometimes finds himself participating in Tsukishima’s taunting behavior. However, he shows significant growth throughout the series, gaining confidence and standing up for himself and his team.


Yamaguchi is a freshman at Karasuno High, where he plays as a middle blocker. He initially struggles to find his place on the team and lacks confidence in his abilities. However, after a devastating loss against Aobajōsai High, he becomes determined to improve and trains rigorously on his own. With the support of his teammates and the guidance of Makoto Shimada, Yamaguchi gradually overcomes his insecurities and becomes a valuable asset to the team.


Yamaguchi has an average build and is often seen with dark gray-green hair. A distinctive feature is a flyaway piece of hair that sticks out at the top. He is not particularly tall compared to some of his teammates, standing at 179.5 cm. His appearance reflects his shy and unassuming nature, but his determination shines through when he steps onto the volleyball court.


As a middle blocker, Yamaguchi’s primary role is to defend against opposing spikes and disrupt the opposing offense. While initially struggling with his skills, Yamaguchi shows great dedication to improving his technique. He seeks out additional training outside of team practice and works hard to refine his blocking skills. Over time, he becomes more proficient in his role, earning the respect and admiration of his teammates.


Tadashi Yamaguchi is a fictional character created by Haruichi Furudate in the manga series “Haikyuu!!”. The series follows the journey of the Karasuno High School volleyball team as they strive to become champions. Yamaguchi’s character development and growth throughout the series make him a fan favorite and a relatable underdog character.

Tadashi Yamaguchi – FAQ

Who is Tadashi Yamaguchi in “Haikyuu!!”?

Tadashi Yamaguchi is a character in the manga and anime series “Haikyuu!!” created by Haruichi Furudate. He is a member of the Karasuno High School volleyball team and plays as a middle blocker.

What is Tadashi Yamaguchi’s role in the Karasuno High School volleyball team?

Tadashi Yamaguchi is a pinch server for the Karasuno High School volleyball team. His main role is to come off the bench and serve at crucial moments in the game to put pressure on the opposing team.

What are Tadashi Yamaguchi’s unique skills?

Tadashi Yamaguchi is known for his powerful and accurate jump float serves. While his blocking and attacking skills are not as strong as some of his teammates, he makes up for it with his serving.

What is Tadashi Yamaguchi’s personality like?

Tadashi Yamaguchi is initially portrayed as a reserved and shy character. He lacks self-confidence and often doubts his abilities. However, as the series progresses, he gains more confidence and becomes more determined to contribute to the team’s success.

Does Tadashi Yamaguchi have any significant character development?

Yes, Tadashi Yamaguchi undergoes significant character development throughout the series. He starts out as a benchwarmer with low self-esteem, but gradually becomes more assertive and confident, especially in his role as a pinch server.

Does Tadashi Yamaguchi have any memorable moments in the series?

One of Tadashi Yamaguchi’s most memorable moments in the series comes during the match against Aoba Johsai High School. He successfully executes several jump float serves, putting immense pressure on the opposing team and helping Karasuno turn the tide of the match.

Does Tadashi Yamaguchi have any close relationships with other characters?

Tadashi Yamaguchi has a close friendship with Tsukishima Kei, another member of the Karasuno volleyball team. They often practice together and support each other’s development. Yamaguchi also has a respectful relationship with other teammates and is well liked by everyone on the team.