|Alias||Eyeshield 21 (epithet nickname given by Hiruma)|
Damn Secretary (by Hiruma)
|Age||15-16 (series run)|
18 (final chapter)
|Bench press||10 kg (Formerly)|
40 kg (Formerly)
|Relatives||Shuma Kobayakawa (father)|
Mihae Kobayakawa (mother)
|Affiliation||Deimon Devil Bats|
|40 Yard Dash||5.0 seconds (normal) 4.6 seconds (Intially) |
|Team||Deimon Devil Bats (high school)|
Team Japan (Youth World Cup)
Notre Dame High School (3rd year)
Enma Fires (university)
|Japanese||Miyu Irino |
Kokoro Kikuchi (younger)
Romi Park (Jump Festa)
|“||That's it. That's what I was hoping for. It's fun. Fighting against incredible players...American football is fun...!!||”|
— Sena during the match against Team Germany
Sena Kobayakawa (小早川 瀬那 Kobayakawa Sena) is the main protagonist of Eyeshield 21. He is the Running Back for the Deimon Devil Bats and a student at Deimon High School who is forcefully recruited by Yoichi Hiruma to become the Running Back for the school's American football team, the Deimon Devil Bats.
To hide his amazing running ability from the school's other clubs, Hiruma disguises Sena's identity with a green eyeshield while he plays, and has him use the series eponymous codename "Eyeshield 21". For much of the series, this is a secret known only to a very big group of people, before Sena grows more mature and confident in his abilities and eventually discards the disguise. Throughout the series Sena affirms his position in the team as being the Deimon Devil Bats unquestioned ace.
Sena is a rather short and somewhat frail high school student, and is overall so weak that he is frequently dragged or carried around against his will at the beginning of the series. He grows somewhat taller and more muscular as he physically grows through the course of his first year in high school and also trains his body by playing football. His hair is dark brown. However his hair also seems to be naturally spiky and sweeping up and to the left, judging by how his hair had the same shape when he was a child.
While playing football he wears a green eyeshield. Just before the game against Bando Spiders, he discarded his green eyeshield and revealed his identity, this being the only time he played without an eyeshield. After the Bando game he started using the blue eyeshield previously worn by Hayato Akaba that he was given. In the anime he went back to using his green eyeshield and never used Akaba's blue one.
Sena has been an extremely timid pushover for his entire life often been protect by Mamori Anezaki and often forced to act as errand boy to avoid getting hurt by Bullies. This begins to change as he matures through the series, largely due to his experiences playing American football. While Sena remains fearful of injury and is easily intimidated for the duration of the series, he becomes more courageous and willing to place himself in danger, either for the sake of helping his team win or to protect others.
Sena is sometimes considered to be chivalrous by his friends because he most often ends up protecting women and children. Sena quickly takes a liking to American football after he begins playing it, and is particularly thrilled whenever he is able to compete against other strong players. When he is not playing football, he is usually shy, modest, and reserved, even when he has accomplished amazing feats and become famous. Sena rarely acts confidently and never boasts about his abilities, and whenever he attempts to make a bold statement, he tends to trail off at the end as his own self-doubt and fear cause his countenance to fall apart.
Sena does not usually grow angry, only doing so when people insult the hopes and dreams of others or begin to give up on their own dreams such as Agon Kongo insult Yoichi Hiruma and Ryokan Kurita dreams of going to the Christmas Bowl. Sena's doubtful outlook usually contrasts with those of his more confident and reckless friends and teammates, such as Monta and Suzuna Taki. Despite this negativity, which can be a bit annoying sometimes, Sena always becomes determined in the crucial moment of a match when he must surpass an opponent with superior abilities and could be said to act appropriately when it matters most.
- The name Sena means "swift current, rapids" (瀬) (se) and "what?" (那) (na).
- Sena's surname Kobayakawa means "small" (小) (ko), "already, now, fast, early" (早) (haya/baya) and "river, stream" (川) (kawa).
|Deimon Devil Bats Team|
|Players||Yoichi Hiruma • Sena Kobayakawa • Ryokan Kurita • Taro Raimon • Gen "Musashi" Takekura • Kazuki Jumonji • Koji Kuroki • Shozo Togano • Daikichi Komusubi • Manabu Yukimitsu • Tetsuo Ishimaru • Yohei Satake • Kenta Yamaoka • Futoshi Omosadake • Akira Nakabo • Natsuhiko Taki|
|Mascots||Deimon Devil Bat (Big) • Deimon Devil Bat (Small) • Cerberus • Pig-Berus|