|"Facing outrageous evil! Smashing the terrifying darkness! The Detective of the Daybreak! DekaBreak!"
|―DekaBreak's individual roll call
|"Six! It's good to be invincible! S.P.D.! DekaBreak!"
|―DekaBreak's team roll call
|―Tetsu’s catchphrase whenever someone says something he considers ridiculous.
Tekkan Aira (姶良 鉄幹 Aira Tekkan) is DekaBreak (デカブレイク Deka Bureiku) of the S.P.D. and Dekarangers. His nickname is Tetsu (テツ/鉄) and his designation is the roman numeral VI.
A super elite from S.P.D.'s Tokkyou division who was sent to earth to fight the Hell Siblings, an elite group of Alienizers who have already destroyed 79 planets, Earth being their next target. An Alienizer named Genio killed Tetsu's parents when he was about five years old. Tetsu was raised by the Space Police off-planet. He pilots the DekaBike. His catchphrase is "Nonsense!".
His fighting style is the Seiken Accel Blow, a martial art style of that all Tokkyou officers use when battling Alienizers and utilizes the BraceThrottle for various effects.
In episodes 26, 45, and in Magiranger vs. Dekaranger, Tetsu dresses up in drag to disguise himself. There's some indication that he is interested in Swan-san. In addition, he treats Umeko like a baby sister. He also develops a strong friendship with Ban, calling him "Senpai" (veteran), and promptly replaces him as Jasmine's partner when Ban joins the Fire Squad.
Magiranger vs. Dekaranger
Some time around the conflict between Fire Squad andAgent X's Alienizer faction, Tekkan has given the Tokkyou badge again, thus returned to serve as the Tokkyou and double as Ban's replacement member at Earth Branch from now on.
While driving to the scene where Chigukaden Buildjick was, Jasmine stated that Tekkan is too enthusiastic in these days. TV STORY-Mahou Sentai Magiranger vs. Dekaranger
GoGo Sentai Boukenger vs. Super Sentai
Tetsu appeared in GoGo Sentai Boukenger vs. Super Sentai when he was investigating a case when Eiji came in. Later on he is seen with Tsubasa, Nanami and Asuka as they aid Eiji in defeating Chronos. He transferred his "Justice Spirit" power to AkaRed to power DaiVoyager. TV STORY-GoGo Sentai Boukenger vs. Super Sentai
A few years later, Tetsu fought alongside not only his own team, but every single Sentai ranger in existence, against the Empire of Zangyack when it attacked the Earth in the Great Legend War. After fighting against hundreds of Gormin and their Zgormin commanders. AkaRenger noticed the fleet moving towards them, he gathered all the Rangers together and gave them the order to sacrifice their powers to wipe out the first invasion's armada. TV STORY-Ep. 1: The Space Pirates Appear TV STORY-Gokaiger Goseiger Super Sentai 199 Hero Great Battle
Farewell Space Pirates
After the Zangyack Empire was defeated by the Gokaigers, Marvelous returned the Ranger Keys to their original owners. It is assumed that Tetsu and the rest of the Dekarangers received their keys and were able to utilize their transformed abilities once more. TV STORY-Final Ep.: Farewell Space Pirates
10 Years After
Ten years after the Dekaranger's final battle against Abrella, Tetsu later became the acting commander of S.P.D. Branch on Earth after Doggie Kruger was being framed. This forces Tetsu to investigate this case alongside Ban, Hoji, Sen-Chan, Jasmine, Umeko, the Neo Dekarangers and several Fire Squad officers. He secretly orders Ban to disguise as Carrie while the real Carrie is brought to the Dekabase in a remote planet by Houji in order to protect her as being witness to her dad's murder. After finding out the truth about Kight Reidlich being a mastermind to these crimes, Tetsu finishes off Clone Abrella in the giant battle before he proceeds to aid his fellow Dekarangers to finish Kight once and for all. TV STORY-Tokusou Sentai Dekaranger: 10 YEARS AFTER
Zyuohger vs. Ninninger
DekaBreak appeared with his team among the first 38 Super Sentai whom collectively empowered Wild Tousai Shuriken King in its fight against the titanic Gillmarda, granting the Ninningers and Zyuohgers the power to perform the Zyuoh Ninnin Super Sentai Burst which destroyed Gillmarda with the combined power of all 40 Super Sentai. TV STORY-Doubutsu Sentai Zyuohger vs. Ninninger: Message from the Future from Super Sentai
DekaBreak worked with his teammates in DekaWing Robo, transforming into the DekaWing Cannon wielded by Kyutama Gattai RyuTeiOh, to keep open the wormhole which would allow the Kyurangers to return to their own space. TV STORY-Space.18: Emergency Dispatch! Space Hero!
Gavan vs. Dekaranger
TV STORY-Uchuu Keiji Gavan vs. Tokusou Sentai Dekaranger
DekaBreak appeared with his team, as part of the six official Sentai, transforming into their Ludicrous Power which combined with the others to form the Ludicrous Cannon Bazooka, which the Akibarangers used to destroy Kameari Alpaca. TV STORY-Hikonin Sentai Akibaranger: Season Two TV STORY-Ep. 10: Delusional Pillow Talk
Video game appearances
- Tekkan Aira/DekaBreak: to be added
Super Sentai Battle Base
DekaBreak is among the vast pantheon of Rangers which are available in the mobile game Super Sentai Battle Base.
Super Sentai Legend Wars
DekaBreak appears with his team among all Sentai in the mobile game Super Sentai Legend Wars.
Dekaranger as seen in Super Sentai Legend Wars.
DekaBreak's insert theme is DekaBreak Zenkai!!.
- BraceThrottle: The personal changer of a Tokkyou which allows him/her to change into Dekasuit. Henshin call is "Emergency! DekaBreak!". When the throttle is turned it enables for the user to use specialized punch based attacks. Also has a built in Communicator and Judgement Mode functions as well. In given times, the device is also used as a life support system and fire extinguisher.
- Throttle Techniques
- Speed Increase
- High Speed-Fist: Lightning Fist (高速拳: ライトニングフィスト Kōsoku-ken: Raitoningu Fisuto)
- Super High Speed-Fist: Super Lightning Fist (超高速拳: スーパーライトニングフィスト Chō Kōsoku-ken: Sūpā Raitoningu Fisuto)
- Strength Increase
- Herculean-Fist: Power Fist (剛力拳: パワーフィスト Gōriki-ken: Pawā Fisuto)
- Super Herculean-Fist: Super Power Fist (超剛力拳: スーパーパワーフィスト Chō Gōriki-ken: Sūpā Pawā Fisuto)
- Electric Shockwave
- Blitzkrieg-Fist: Electro Fist (電撃拳: エレクトロフィスト Dengeki-ken: Erekutoro Fisuto)
- Super Blitzkrieg-Fist: Hyper Electro Fist (超電撃拳: エレクトロフィスト Chō Dengeki-ken: Haipā Erekutoro Fisuto)
- Fireball Attack
- Scorching-Fist: Fire Fist (灼熱拳: ファイアフィスト Shakunetsu-ken: Faia Fisuto)
- Cyclone Blast
- Tornado-Fist: Tornado Fist (竜巻拳: トルネードフィスト Tatsumaki-ken: Torunēdo Fisuto)
- Fire Extinguisher
- Spray-Fist: Impulse Fist (噴射拳: インパルスフィスト Funsha-ken: Inparusu Fisuto)
- Super Spray-Fist: Super Impulse Fist (超噴射拳: スーパーインパルスフィスト Chō Funsha-ken: Sūpā Inparusu Fisuto)
- Deletion Techniques
- Superman (Flying) Punch Finisher (Tetsu's Default Deletion Attack)
- Certain Kill-Fist: Sonic Hammer (必殺拳: ソニックハンマー Hissatsu-ken: Sonikku Hanmā): Tetsu's signature attack where he pumps his BraceThrottle three times, energizing it with yellow energy, before jumping three miles straight up into the sky. As he then plummets to the ground, he punches the Alienizer in the center of thier foreheads with such force that they are instantly deleted.
- Uppercut Finisher (Actived while Tetsu is using Super Lighting Fist)
- High Speed-Fist: Lighting Upper (高速拳: ライトニングアッパー Kōsoku-ken: Raitoningu Appā)
- Rushing Punch Finisher (seen in DekaRed vs. DekaBreak)
- Lightning-Fist: Plasma Fist (電光拳: プラズマフィスト Denkō-ken: Purazuma Fisuto)
- Although the in-episode captions title the technique as above, the official subtitles give the technique's name as Flash-Fist: Plasma Fist (閃光拳: プラズマフィスト Senkō-ken: Purazuma Fisuto)
- Shining Fist (シャイニングフィスト Shainingu Fisuto): A Rapid-fire Punch attack when being launched from the MagiLamp Buster (seen in Magi vs. Deka). Unfortunately, Tetsu had to deal with Smoky the Magical Cat first.
- Machine Boxer
Transformation and Roll Call
The DekaBreak Ranger Key (デカブレイクキー Deka Bureiku Renjā Kī) is Tekkan's personal Ranger Key and what became of his powers after he along with the rest of the 34 Super Sentai sacrificed their powers to end the Great Legend War.
This key, along with the other fourteen sixth ranger keys and the ten extra hero keys, were initally acquired by Basco ta Jolokia and later used by the Gokaigers. Like all of his Ranger Keys, Basco used his trumpet, the Rapparatta, to turn the DekaBreak key into a puppet to do his bidding. The copy DekaBreak was one of the first five sixth rangers that Basco showed Captain Marvelous (Gokai Red), revealing he had found more Ranger Keys. These five puppets fought the Gokaigers and were all defeated, with DekaBreak being defeated by Gokai Pink. Basco left these five keys to Marvelous.
A short while after, the first fourteen Sixth Ranger Reys, along with all the Ranger Keys of the first 33 Super Sentai, were briefly taken by the Black Cross King and turned into Ranger puppets that were fought by the Gokaigers and the Goseigers. The DekaBreak key was among ten of these Sixth Ranger Keys who fought, and were defeated by, Gosei Knight. TV STORY-Gokaiger Goseiger Super Sentai 199 Hero Great Battle
While in the possession of the Gokaigers, the DekaBreak Ranger Key was mainly used by Gai Ikari (Gokai Silver), who used it to fight as DekaBreak. It was also used by Joe Gibken (Gokai Blue) on one occasion.
After Zangyack were finally defeated, the Gokaigers gave the Ranger Keys back to their rightful owners. It is presumed that Tekkan received his key and became DekaBreak once more.
Behind the scenes
Tekkan "Tetsu" Aira is portrayed by Tomokazu Yoshida (吉田 友一 Yoshida Tomokazu). As a child, he is portrayed by Yuta Komuro (小室 優太 Komuro Yūta). As DekaBreak, his suit actor was Eitoku (永徳).
In the Korean dub of Dekaranger entitled Power Rangers S.P.D., which aired in South Korea, Tekkan does not use a nickname and keeps his real name, while his Ranger designation is S.P. White.
Deka Break's name is based on the word "Daybreak" as well as the phrase "take a break.
- Tetsu is the first Sixth Hero to be both an official hero and official Sixth to take part in both crossover movies.
- Tekkan's actor, Tomokazu Yoshida, voiced his Power Rangers counterpart Sam (S.P.D. Omega Ranger) in the Japanese dub of Power Rangers S.P.D..
- He is currently the last Sixth Ranger to be a White Ranger.