Sena Kobayakawa : Eyeshield 21

• Sena Kobayakawa (小早川瀬那, Kobayakawa Sena) Voice : Miyu Irino

Sena that was born on December 21 is a first class high school student Deimon weak and cowardly. Since elementary school, Sena has been enslaved by his friends. Sena also has a childhood friend named Mamori Anezaki (姉崎 まもり, Anezaki Mamori) who always keep it from interference by other children. Even so, the Sena had a very lively legs as they often ran to execute the command naughty children so that makes the feet & she used to run here and there. Then when the Sena managed to pass the entrance test Deimon High School, he was recruited Hiruma who found his home address by lending their mobile phone and send a lot of brochures Amefuto home club to make Sena Sena stress. Actually that makes Sena Amefuto club is interested because he wants to be syumu (club manager) out of compassion with which members of his club Kurita only 2 people. But after a long time he finally excited about a player as well. This is because he has promised Shin Seijuro. When SD Sena was used as slaves, his friends but he was always rescued by Kaitani Riku, his classmate. Riku also has nimble feet and it was he who taught Sena how to run so as not to be disturbed again by his friends. But Sena instead use his running ability to be as fast when told to-order and this makes Riku angry. Unfortunately Riku only 2 weeks of class with Sena because her parents changed jobs. However, Riku Sena promised to always train the legs to be fast. Riku Sena finally met again in the position of Seibu Wild Runnerback Gunmans. Sena-speed train running from his feet with Riku technique for 6 years until his run could reach light speed 4.2 seconds. Sena and Suzuna seems like each other. In episode 87 after defeating Deimon Bando Spiders, Sena fainted very tired. In Suzuna hug.

Teknik

• Devil Bat Ghost: Crossover step with the braking technique without reducing speed. Sena learn this technique in a 2000 km Death March in the U.S. by kicking a stone. This technique raises the shadow effect as if the Sena to 2 so confusing blockers opponents and making them count as an appropriate one to tackle. Later this technique developed as a basic other technique for Sena.

Devil Bat Ghost

• Devil Light Hurricane: also called the Devil Bat Tornado. This technique is created when a game against Kyoshin Poseidon by combining the Devil Bat Ghost and spin motion. Round effects that make the technique tackles two hands (such as his Grapple Anchor Kakei) is useless.

Devil Light Hurricane

• Devil Bat Dive: Sena jumped into the front line at full speed. Hiruma Sena do only allow 1 or 2 times in the field because this technique is very dangerous.

Devil Bats Dive

• Devil Stungun : using his arms, Sena deflect his Trident Tackle Shin and successful despite not playing hurt and Shin launched Trident Tackle longer than his left arm. Sena gets inspiration from the fight against Agon Kongou. This technique is similar to techniques Panther a.k.a. Patrick Spencer of NASA Aliens who ignore safety balls to escape from opponents. This technique is also taking a little jab of boxing movements. But eventually this technique successfully broken by Marco from Hakushuu Dinosaurs using techniques Screw Bite.

Devil Stungun

• Devil Ghost Dive : Sena wearing Devil Bat Ghost and suddenly jump up to their opponent. This technique is created against Shin Seijuurou and merged with the Devil Stungun while in the air to deflect so that Shin's Trident Tackle Sena can be defeated with this technique. This technique is also used when the last play against the Ojo White Knights in the Kanto Tournament, and against the Yamato from Teikoku Alexanders in the Christmas Bowl. But Yamato was able to conquer this technique.

• Vertical Devil Light Hurricane : Sena reduce the distance to the opponent and then push while spinning at the speed of light. By using the opponent's body as a footstool, Sena spin while avoiding all the opponent's attack. Because the range is very narrow then Defensive Attack the opponent with a technique that is close (such as Screw Bite Marco) could not grab the ball.

• Multiple Devil Bat Ghost : In chapter 287 Yamato show after Ghost Steps "original", Sena decided to refine his Devil Bat Ghost in the wild, and Crossover Step Cut simple step that could create a 4 "shadow".

• Devil 4th Dimension :Sena strongest run technique. Created during Christmas Bowl against the Teikoku Alexanders. When running with the speed of light, the Sena did Backstep very quickly without changing its speed or balance. Do this when your opponent is going to make tackles tackle opponents so far off the mark Sena could escape from custody and move freely. Against an opponent, this technique effect as if time runs backwards (Fourth Dimension). The disadvantage is that after doing Backstep, there are times when Sena change the direction of flight of a snap, so he paused. Defenders can stop when I saw it and pay attention to the direction Backstep run Sena. Yamato decides to break the backstep by locking technique used by Caesar's Charge. With all her strength to achieve his running Yamato accelerate beyond the speed of light in an instant ran Sena. Sena finally able to close that weakness by combining the Devil 4th Dimension with the Devil Bat Ghost. He was successful at confusing the opponent after doing backstep and Yamato was finally subdued. Sena Devil Bat Ghost wear a running back is called Reverse Devil Bat Ghost. After that Yamato stated there was no strength or talent that can break this technique because it is "pure speed".

Statistic :

1. Have record 40-yard run: 4.2 seconds (4.1 seconds evolve into) against with OJOU WHITE KNIGHT
2. Bench Press: 10 kg, 40 kg di vol. 5, dan 45 kg in di. 10
3. Position: Running Back
4. Number of  Player in Team: 21
5. Class in 1st Senior High School
6. Universitas: Enma
7. Club Football Universitas: Enma Fire