This article is about a/an rider in Kamen Rider OOO.
"Now then, let's start earning!"
―Akira's pre-battle catchphrase[src]

Akira Date (伊達 明 Date Akira) is a combat medic who traveled the world much like Eiji. He returned to Japan and became the first user of Kamen Rider Birth (仮面ライダーバース Kamen Raidā Bāsu) for the Kougami Foundation, taking up the job to earn the money he needs for the surgery to remove a bullet stuck in his brain, which causes him great pain at times. After being wounded in action, he passed on the Birth system to Shintaro Goto, leaving Japan with the money for his surgery. After returning and recuperating, he became the user of the prototype version of Birth.


Akira first appeared as Birth while using the Breast Cannon on Mezool as the Mega Greeed Out of Control to damage her and release two of Uva's Core Medals. For the rest of his time as Birth he would fight the Yummy to collect their Cell Medals while also helping some of their hosts and assisting OOO when needed. He also trains Shintaro to take his position after finishing his task as Birth. But over time, the bullet in his head gave him greater pain, causing him to collapse during battles. Maki bribed Akira to betray Kougami and join his side, which Akira accepted as he starts supporting the Greeed. However, in reality, Akira faked the betrayal under orders from Kougami to stop Maki from becoming a Greeed.

When the Greeed injures Akira in retaliation, knocking him unconscious, it gave Shintaro the motivation to use the Birth Driver and avenge Akira's "death". Though it turned out that he was in no mortal danger from the Greeeds' attack, Akira decides to let Shintaro become the new Kamen Rider Birth. He uses the danger policy he signed with the Kougami Foundation to collect ¥50 million so he can travel abroad to have surgery done to remove the bullet from his brain. Along with the ¥50 million that Maki paid him, he now has the ¥100 million yen he wanted for his surgery and to set up a medical school in the country where he and Eiji were involved in a civil war. Later, he returned to Japan once again and became the user of Kamen Rider Birth Prototype Version to fight against Greeed.

OOO, Den-O, All Riders: Let's Go Kamen Riders

Kamen Rider Birth in Legend War

As all of the primary Kamen Riders face the Great Leader of Shocker, Akira led all of the secondary riders (including the dark riders) to support the primary riders.

Movie War Mega Max

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Akira returns to Japan for aiding Satonaka after receiving a call about the berserk Kamen Rider Poseidon. He fights it by transform into Birth Prototype but lost easily and even the aid from Shintaro won't help. As the result, the Proto-Birth Driver was damaged and Akira was later hospitalized alongside Shintaro. At the next day, he returns alongside with Shintaro to help Eiji for some minutes without transforming. Of course he is defeated as a result. In the end, he helps Chiyoko clean up Cruise Crousier after the battle is finished.

Super Hero Taisen

Birth Prototype (Super Hero Taisen)

Akira arrives to assist Eiji against Dai-Zangyack.

Akira and Shintaro arrive to assist Eiji in fighting Bujira and his offshoots. Once Gokai Red and Kamen Rider Diend finish their battle, Gokai Red wipes Birth and Proto-Birth out. When Gokai Red and Kamen Rider Decade were revealed to acted like a villain, Birth and Proto-Birth, along with any Riders and Sentai warriors are actually in another strange dimensions where they are held, as both Decade and Gokai Red set them free and the time for counterattack against Dai-Shocker and Dai-Zagyack.

Kamen Rider OOO (novel)

While out of boredom, Akira writes a short story about the Birth Drivers. Despite being sentient, the belt isn’t capable of speaking human language. At one point the belt says “Sometimes I just want to scream, but then I realize I can’t.” But it is still able to communicate with other items, such as the Proto Birth Driver and other Candroids. The belt recollects his memories with Akira and Shintaro, he goes on to praise Akira by saying how strong he is, how masculine he is and how much fun they had together. Shintaro on the other was too unreliable and weak in the beginning, Birth Driver eventually came to accept Shintaro.

The Prototype Birth Drive that was destroyed in Mega Max makes a brief appearance and says “A transformation belt that can’t transform is just a regular belt. Actually, it’s even worse. A regular belt is at least used as to keep someone’s pants up! I can’t even do that. I’m just a heavy object around the waist!” Doctor Maki also makes a minor appearance by creating a Yummy from the Birth Driver. The Yummy is called Kamen Rider Death and looks similar to Kamen Rider Birth, but he’s not really a Kamen Rider. The Candroids, Mr. Gori (a Gorilla Candroid) and Mr. Tiger (a Tiger Candroid) as the Birth Driver refers them as, destroy the Yummy.

Kamen Rider Zi-O NEXT TIME: Geiz, Majesty

In the new timeline created by Sougo Tokiwa sacrificing the powers of Ohma Zi-O, Geiz is reincarnated as Keita Myokoin, living in 2018 as a high school student at Hikarigamori High School alongside Sougo. After twisting his ankle in a judo tournament, Ora uses her father's connections to get him high quality medical treatment. Geiz is taken to Kujirakawa Nonprofit Hospital, where Date treats his injuries. He reports to Sougo and Tsukuyomi that Geiz is unlikely to be able to compete again.

During his hospialization, Geiz is attacked by a Kasshine. Date arrives with the Birth Buster to defend his patient and transforms into Kamen Rider Birth to fight. After defeating the Kasshine, Date returns to see White Woz talking to Geiz. Date recounts to Geiz how he used to travel the world as a doctor until his own injury and met amazing people after returning to Japan.

The power of Kamen Rider Birth contained in one of Daiki Kaito's Rider Cards is later combined with that of other Secondary Riders to create the GeizMajesty Ridewatch.


Nobunaga before dying


Main article: Nobunaga (Sengoku Movie Battle)

Nobunaga (ノブナガ) is the lord of the OOO Army (オーズ軍 Ōzu Gun), that greatly resembles Akira Date. He was killed by Kamen Rider Bujin Gaim after HON-NOHJI castle that he lodged in was set on fire. Kamen Rider × Kamen Rider Gaim & Wizard: The Fateful Sengoku Movie Battle


Akira is a happy-go-lucky man who hates reading manuals and has a tendency in mixing up names (he often calls Ankh as "Anko"). Despite this, he enjoys getting his job done perfectly and believes risking big in order to win big, thus proclaiming that he'll be taking all the cell medals from here on out. Akira is a people person, admitting his own desire, yet he makes it a personal rule of his to not use others to reach his goal, as well as not doing anything that will make him cry. He is also somewhat reckless, getting Ankh in a line of fire while fighting the Kabuto and Kuwagata Yummy. Akira is also known to love eating oden, even making oden in Kiyoto Maki's research lab, while at the same time taking up residence and making a big mess out of it, much to Maki's ire. He has taken a liking to Shintaro Goto, training him in order to take up the mantle of Birth once his job is over. He has a big brother-little brother/father-son dynamic with Shintaro and he is always happy to see the latter grow. When he comes back to Japan after his surgery and sees how his "son" has now becomes his own man and doing better than he was before, he exclaimed that "father is happy". Before battle, Akira tends to say "Now, let's start earning" (さあて、稼ぎますか Saa te, kasegimasuka). In the battle with the Unicorn yummy he was having difficulty fighting in battle that may be be the result of the bullet that is lodged in his brain.

His fighting style as Birth is a combination of mixed martial arts and pro wrestling techniques, as shown in particular against the Omu and Unicorn Yummy. Due to his dislike for reading manuals, his use of the Birth system tends towards the "learn as you go" approach and as such, he is not as effective as Shintaro when it comes to using the exosuit and its armaments.

Video Game appearances

All Kamen Rider: Rider Generation

Akira Date appears as Birth in the first installment of All Rider: Rider Generation. In the second installment, he appears as Proto-Birth. His special move in the first is used by Goto in the second installment while he has his own more close combat movement.

Kamen Rider Climax Heroes

Akira Date appears as both Birth and Proto-Birth in Climax Heroes Fourze and Super Climax Heroes. He will use Proto-Birth if tagged with Goto as Birth.

Kamen Rider: Battride War

Akira Date appears as Kamen Rider Birth in Kamen Rider: Battride War, with Hiroaki Iwanaga reprising his role. He appears as Birth in OOO's memory of the final battle with Dr. Maki, with no reference made to either Goto or Proto Birth. When the assembled Rider enemies (lead by the Sagittarius Zodiarts) attack the heroes' base in Mnemosyne, Birth appears alongside Accel and Meteor to help thwart the attack, where he remarks on Ryusei's enthusiasm and then Ryu's brusque attitude by saying "Man, it's sure nice to be young".  After the battle he joins the heroes, becoming one of four playable Secondary Riders in the game (alongside Accel, Meteor, and Beast).

Birth is a heavy-type character, his moveset consisting of the Birth Buster and several wrestling-inspired moves.  Lacking an alternate form, Birth instead has a cache of extra points representing Cell Medals which can be spent to use the Birth CLAWs weapons and are replenished by defeating enemies, much like Blade's ability to use Rouse Cards.  Birth's ultimate form is Birth Day.

  • Attacks (as Birth): Birth Buster, Triple Spin Kick, Dash (can cancel into Sliding Kick, Dropkick, or German Suplex)
    • Birth CLAWs: Drill Arm, Shovel Arm, Crane Arm, Catepillar Leg, Breast Cannon
  • Attacks (as Birth Day): Breast Cannon + Drill Arm (used upon transformation), Shovel Arm, Breast Cannon, Breast Cannon (Full Power)

Kamen Rider Travelers Record

Date/Birth appears in the video game Kamen Rider Travelers Record.

Kamen Rider: Battride War Genesis


Kamen Rider Birth in Battride War Genesis.

Kamen Rider Birth reappeared in Kamen Rider: Battride War Genesis


Skilled-Hand-To-Hand Combatant: Akira is a skilled fighter besides his occupation as a doctor in war field. This is due the fact that for joining military even as a doctor, one must practiced military combat art.

Skilled Physician: Akira is a skilled combat medic with years of experience under his belt. He is able to treat people's wounds with whatever he has on him and figure out the best way possible to treat them.


Kamen Rider Birth's ending theme is entitled "Reverse/Re:birth".

Birth Prototype

Birth Prototype


  • Height: 199 cm
  • Weight: 92 kg

Ability Perimeters:

  • Punching Power: 3.5 t.
  • Kicking Power: 8 t.
  • Maximum Jump Height: 45 m.
  • Maximum Running Speed: 100 m. per 5 sec.

Kamen Rider Birth Prototype (仮面ライダーバース・プロトタイプ Kamen Raidā Bāsu Purototaipu), or Kamen Rider Proto Birth (仮面ライダープロトバース Kamen Raidā Puroto Bāsu), is the first design of the Kamen Rider Birth System using an early version of the Birth Driver.

BIRTH Prototype-BC

Birth Prototype armed with Breast Cannon

Its full combat capabilities are not known because it was designed to only operate at 70% power for testing and nearly all of its features are still set up for data collection. The Birth Prototype's design differs from the standard Kamen Rider Birth armor by having a series of markings known as Optical Markers (オプティカルマーカー Oputikaru Mākā), which include various sensors used in the early test stages, and are a bright red to show up more easily on camera. It cannot access all of the Birth CLAWs units, and is only compatible with the Crane Arm and Breast Cannon.

Shintaro Goto first uses the Prototype system after the production version is heavily damaged in the final fight with Kazari. Later, Akira Date returned to Japan and became the user of the Prototype Version to end the Greeed conflict. The Birth Prototype Driver is later damaged by Poseidon during the events of Kamen Rider × Kamen Rider Fourze & OOO: Movie War Megamax. It was later fixed after the event, as Akira was once more became Birth Prototype in Kamen Rider × Super Sentai: Super Hero TaisenIcon-crosswiki against Gokai Red and Bio Hunter Silva, and later against Dai-Shocker and Dai-Zangyack.

Appearances: Episodes 46-48, Movie War Mega Max, Super Hero Taisen


Kamen Rider Birth

Akira Date in Birth

Akira Date's face in Birth Helmet


  • Height: 199 cm
  • Weight: 92 kg

Ability Perimeters:

  • Punching Power: 3.5 t.
  • Kicking Power: 8 t.
  • Maximum Jump Height: 45 m.
  • Maximum Running Speed: 100 m. per 5 sec.

Like Kamen Rider OOO, Kamen Rider Birth's powers stem from the Cell Medals that power the Greeed and their Yummy creations. However, Kamen Rider Birth's powers originate solely from the Kougami Foundation's technology developed by Kiyoto Maki to utilize the power of the Cell Medals. On Birth's armor there are capsules called Receptacle Orbs (リセプタクルオーブ Riseputakuru Ōbu), in which the Birth CLAWs system is stored until a Cell Medal is used to summon the weapons. Due to using Cell Medals as opposed to Core Medals, Birth, or at least Akira's usage of it, was at a disadvantage against the Greeed.

Appearances: Kamen Rider OOO Episodes 16-28, Let's Go Kamen Riders, 29-38, OOO Wonderful: The Shogun and the 21 Core Medals, Kamen Rider Zi-O NEXT TIME: Geiz, Majesty

Crane Arm

Crane Arm

"Crane Arm!"
―Activation announcement[src]

The green Crane Arm (クレーンアーム Kurēn Āmu) unit, referred to as the "Springer Haken" (シュプリンガーハーケン Shupuringā Hāken, "Jumper Hook" in German), is a powerful winch attachment that is contained in the Receptacle Orb on Kamen Rider Birth's right shoulder. The winch allows him to scale buildings as well as collecting any leftover Cell Medals with one sweep. As a weapon, it can be used as a whip to damage opponents from far. This unit is first used by Nobunaga to fight the Pteranodon Yummy in Movie War Core. When CLAWs Sasori is activated, the Crane Arm forms the tail.

Appearances: Kamen Rider OOO Episodes 17-18, 20, 25, 36, OOO Wonderful: The Shogun and the 21 Core Medals

Breast Cannon

Breast Cannon

"Breast Cannon!"
―Activation announcement[src]

The red Breast Cannon (ブレストキャノン Buresuto Kyanon) unit, referred to as the "Salamander Launcher" (サラマンダランチャー Saramanda Ranchā), is a powerful energy cannon that is held in the Receptacle Orb on Kamen Rider Birth's chest. Due to its size, using it hinders Kamen Rider Birth's mobility. The cannon can be charged up to multiple levels of power by using additional Cell Medals. When CLAWs Sasori is activated, the Breast Cannon forms the head.

Appearances: Kamen Rider OOO Episodes 16, 18, 25, 30, OOO Wonderful: The Shogun and the 21 Core Medals

Drill Arm

Drill Arm

"Drill Arm!"
―Activation announcement[src]

The blue Drill Arm (ドリルアーム Doriru Āmu), referred to as the "Brighton Bit" (ブライトンビット Buraiton Bitto), is held in the Receptacle Orb on Kamen Rider Birth's right forearm. Its powerful drill bit can extract Cell Medals from the bodies of Greeed and Yummy. It was eventually upgraded by Doctor Maki to increase its power after it got broken, allowing it to tear enough Cell Medals out of Kazari's hybrid Yummy to reduce them to a normal one. The Drill Arm can also be combined with the Crane Arm by activating both simultaneously, allowing Birth to use it as a powerful ranged attack. When CLAWs Sasori is activated, the Drill Arm forms the stinger.

Appearances: Kamen Rider OOO Episodes 17-24, 26, 29, 36, OOO Wonderful: The Shogun and the 21 Core Medals

Catepillar Leg

Catepillar Leg

"Catepillar Leg!"
―Activation announcement[src]

The purple Catepillar Leg (キャタピラレッグ Kyatapira Reggu), referred to as the "Haze Crawlers" (ヘイズクローラー Heizu Kurōrā), are held in Receptacle Orbs on Kamen Rider Birth's legs, and allow him to move easily over tough terrain and execute heavy kicks and grind on opponents using its tracks. When CLAWs Sasori is activated, the Caterpillar Legs form the lower body.

Appearances: Kamen Rider OOO Episodes 18, 21, 26

Shovel Arm

Shovel Arm

"Shovel Arm!"
―Activation announcement[src]

The orange Shovel Arm (ショベルアーム Shoberu Āmu), referred to as the "Vermillion Bucket" (バーミリオンバケット Bāmirion Bakketo), is held in the Receptacle Orb on Kamen Rider Birth's left forearm, increasing his power to where he can lift Yummy off of the ground with it. When CLAWs Sasori is activated, the Shovel Arm forms the right claw.

Appearances: Kamen Rider OOO Episodes 20-22, 27

Cutter Wing

Cutter Wing

"Cutter Wing!"
―Activation announcement[src]

The yellow Cutter Wing (カッターウイング Kattā Uingu), referred to as the "Solent Edges" (ソレントエッジ Sorento Ejji), is held in the Receptacle Orb on Kamen Rider Birth's back, allowing him to fly. The unit can also magnetically collect Cell Medals by flying over them. It can also be used as an oversized boomerang. When CLAWs Sasori is activated, the Cutter Wing forms the left claw.

Birth Day
KRO-Birth Day

Birth Day

Kamen Rider Birth Day (仮面ライダーバース・デイ Kamen Raidā Bāsu Dei) is the name for when all six Birth CLAWs units are summoned and attached to Kamen Rider Birth. Costing six Cell Medals, it is extremely risky when Kamen Rider Birth activates this combination on his own, and requires Kamen Rider OOO to back him up. This form can also perform a powerful attack called Cell Bash (セルバッシュ Seru Basshu), where the Breast Cannon fires a powerful energy blast without the expenditure of any Cell Medals.

Appearances: Kamen Rider OOO Episodes 26,


Kamen Rider Rebirth


  • Height: 201 cm
  • Weight: 98 kg

In Kamen Rider Wizard's S.I.C. Hero Saga, Akira Date transforms into a new form of Birth known as Kamen Rider Rebirth (仮面ライダーリバース Kamen Raidā Ribāsu).





Legend Rider Devices

KR Birth Card

Kamen Ride: Birth

The Birth Rider Card, containing the power of Kamen Rider Birth. Used by Diend to summon Kamen Rider Birth.

This Rider Ring which bears the likeness of Kamen Rider Birth appears in Movie War Ultimatum, where it is used to summon Birth to the Underworld alongside the Rings of Kamen Riders Double, Accel, and OOO.

A premium version of this Wizard Ring was later released as part of Kamen Rider Wizard's Wizard Ring toyline.

KRZiO-Birth Ridewatch

Birth Ridewatch

Birth Ridewatch (バースライドウォッチ Bāsu Raido Wotchi): Based on Kamen Rider Birth, this Ridewatch would provide access to the BirthArmor.[1]

Behind the scenes


Akira Date is portrayed by Hiroaki Iwanaga (岩永 洋昭 Iwanaga Hiroaki). Iwanaga previously portrayed Chief Eiji Ishiguro in Tomica Hero: Rescue Force and later portrayed Shu KarasumaIcon-crosswiki in Space Sheriff Gavan: The MovieIcon-crosswiki.

As Kamen Rider Birth, his suit actor was Eitoku (永徳). As Kamen Rider Birth Proto Type, his suit actor was Yoshifumi Oshikawa (押川 善文 Oshikawa Yoshifumi), Jiro Okamoto (岡元 次郎 Okamoto Jirō)




Icon-ooo Kamen Rider OOO
Eiji Hino/King - Akira Date - Shintaro Goto - Kamen Rider Core - Michal Minato - Poseidon - Nobunaga
Kougami Foundation and Allies
Kougami Foundation: Kousei Kougami - Erika Satonaka
Cous Coussier: Hina Izumi - Chiyoko Shiraishi - Shingo Izumi
Greeed: Kiyoto Maki - Uva - Kazari - Gamel - Mezool - Ankh (Lost)
Yummy: Waste Yummies - White Yummy - Kamakiri Yummy - Otoshibumi Yummy - Neko Yummy - Piranha Yummy - Bison Yummy - Same Yummy - Ageha Yummy - Siam-Neko Yummy - Rikugame Yummy - Kabuto Yummy - Kuwagata Yummy - Lion-Kurage Yummy - Batta Yummy - Ei-Sai Yummy - Omu Yummy (Blue, Red) - Ika-Jaguar Yummy - Shachi-Panda Yummy - Kuro Ageha Yummy - Pteranodon Yummy (Male, Female) - Fukuro Yummy - Unicorn Yummy - Uni-Armadillo Yummy - Shamo Yummy - Ankylosaurus Yummy - Hagetaka Yummy - Nue Yummy
Other Characters: Gara - Kamen Rider Fourze - Kamen Rider Double - Kamen Rider Wizard - Kamen Rider Gaim - Kamen Rider Ghost - Kamen Rider Ex-Aid - Kamen Rider Build - Kamen Rider Zi-O - Kamen Rider Geiz
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