O Medals

The O Medals (オーメダル, Ō Medaru) are special medals that are the center of Kamen Rider OOO's different powers based on the animal the Medal represents. There are two different O Medals: Core and Cell.

In Kamen Rider Battle: Ganbaride, toy versions of the O Medals, both Core and Cell, can be used with the OOO style Ganbaride arcade machines to either change combos or initiate attacks. Some are also exclusive to the game such as the Rider Medals that allow Kamen Rider OOO to transform into the Kamen Riders based on those Medals and perform their finisher attacks.

Core Medal
Core Medals (コアメダル, Koa Medaru) are colored O Medals used to transform into Kamen Rider OOO or any Combo which are acquired from a Greeed. These five types of Core Medals were originally fifty (five sets of ten) created by human alchemists 800 years ago as a means to create artificial life, drawing from characteristics of different animals, forming the core of the Greeed before one Medal in each set was destroyed. However, as revealed by Maki, they made a sixth set of Core Medals: the Purple Cores, which were formed from the antithesis of desire and had the potential to shatter Core Medals with ease. Five of these Medals entered Eiji's body when they sense his lack of desire, having a profound effect on him by allowing him to sense a Yummy and appearing on the OOO Driver on their whim, but they also entered Dr. Maki due to his wish for the end of the world.

Each set of Core Medals comes in a specific color and animal type. Red Core Medals have bird powers; yellow Core Medals have big cat powers; green Core Medals have insect powers; silver Core Medals have heavy mammal powers; blue Core Medals have marine animal powers; purple Core Medals have dinosaur powers; and orange Core Medals have reptilian powers. There are 70 Core Medals total from the series, each three from a Greeed divided in three groupings: Head, Arms, and Legs.

In the series finale, only 53 Core Medals that remained after Eiji and Maki permanently killed several of the Greeed, but all Core Medals except for one Core are seemingly destroyed when Eiji as able to defeat the Kyoryu Greeed, the Greeed absorbing all but one of the Core Medals, along with the Medal Vessel, in a black hole-like collapse of the Purple Core Medals' power, the Purple Cores shattering as they approached the event horizon, disappearing forever. That one Core Medal that was left is the split-in-two Taka Medal which formally contained Ankh's consciousness, Eiji now carrying it with him on his journey while find a way to fix the medal and revive him. However, in the Kamen Rider x Kamen Rider Fourze & OOO Movie War Megamax, it was eventually revealed that the black hole was not a gateway to destruction, but a time anomaly, which sent all of the Core Medals, as well as the Cell Medals the Medal Vessal had gathered, 40 years into the future. There, they merged into the body of Michal Minato. The overwhelming amount of Cell Medals and Core Medals allowed the newly created medals of Kamen Rider Poseidon to form into a Greeed with a will all its own.

There were also the King's Core Medals (王が持っていたコアメダル, Ō ga Tsukatteita Koa Medaru), which were originally part of the Core Medal sets that composed Ankh, Kazari, and Uva. Being the only tenth Core Medals separated from the rest of their respective sets instead of being destroyed, the King used them to become Kamen Rider OOO eight centuries ago. They were originally in Kougami's possession until he gives them to Eiji to become the true Kamen Rider OOO. These special Cores were first mentioned in a Foundation X report during the antepenultimate episode of Kamen Rider W, referred to as the King Medal (at the time, it was believed there was only one King Core) which are said to have more power than even the True Gaia Memory. However, prior to the final battle, the King's Core Medals are shattered due to the power of the purple Core Medals and the massive amount of Cell Medals in Eiji's body.

The DX OOO Driver's O Scanner contains unused sounds for certain animals, most likely Core Medal ideas that were left in the Scanner. These were later referenced in Movie War Megamax as Core Medals being developed by the Kogami Foundation, specifically on a chart that appears in Kogami's office while he discusses this with Shinichiro Goto. They were the Ushi (ウシ, Bull), Shirokuma (シロクマ, Polar bear), Hachi (ハチ, Bee), Mukade (ムカデ, Centipede), Ari (アリ, Ant), Shika (シカ, Deer), Gazelle (ガゼル, Gazeru), Yadokari (ヤドカリ, Hermit crab), Penguin (ペンギン, Pengin), and Seiuchi (セイウチ, Walrus) Core Medals. Kogami's chart also includes the Panda Medal (seen only in Ganbaride), the Kangaroo Medal (seen only in the Hyper Battle DVD), and Poseidon's Cores.

After Megamax, Eiji now has one copy of each Core Medal of the five desire-based Medals. However, Kamen Rider × Super Sentai: Super Hero Taisen had shown that Eiji regains the restored Purple Cores, despite all of those Cores being explicitly being shown destroyed in the finale and were never seen/used in Megamax. Also, Eiji somehow got two more copies of the Taka, Tora and Batta Medals, to allow GokaiRed, Yellow, and Green, to assume his Tajadol, Latorartar, and Gatakiriba Full Combo forms.

Head:

 * Taka Medal (タカメダル, Taka Medaru): The Taka Medal is the Hawk-themed O Medal given to OOO by Ankh. As a Head Core Medal, it allows OOO to use the Taka Head, greatly improving his senses and improve his accuracy. It also enables him to see inside Greeed or Yummy, such as pinpointing the location of a specific Core Medal within a Greeed's body, which was shown when he used the Taka Medal to find the Shachi Medal in Kazari's body. In the Tajadol Combo, the Taka Head becomes the Taka Head Brave. It was the first Core Medal to be seen in the series and was one of four initital Core Medals OOO could utilize. After Ankh's sacrifice, only one copy remained before it broke into two halves while the last intact copy was sucked into a black hole. Following the loss of all the other Core Medals to the black hole, this is the only Core Medal to still exist in some form in present day, the broken halves taken by Eiji on his travels. After Super Hero Taisen, Eiji now has all three Medals, but still needs to get Ankh's broken Core restored.
 * Kuwagata Medal (クワガタメダル, Kuwagata Medaru): The Kuwagata Medal is the Stag Beetle-themed O Medal. As a Head Core Medal, it allows OOO to use the Kuwagata Head, allowing him to create lightning from the Kuwagata Horns normally and, when using the Gatakiriba Combo, it allows the power of duplication, an effect known as the Branch Shade. After Uva's demise, all three of them are sucked into the black hole that was caused by the destruction of the Kyoryu Greeed. After Movie War Megamax, Eiji has one copy of this Medal.
 * Lion Medal (ライオンメダル, Raion Medaru): The Lion Medal is the Lion-themed O Medal. As a Head Core Medal, it allows OOO to use the Lion Head, which allows OOO to release intense light normally and intense heat when using the Latorartar Combo, an effect known as Liodias. After the death of Kazari, only two of them remained before being sucked into the black hole that was caused by the destruction of the Kyoryu Greeed. After Movie War Megamax, Eiji has one copy of this Medal.
 * Sai Medal (サイメダル, Sai Medaru): The Sai Medal is the Rhinoceros-themed O Medal. As a Head Core Medal, it allows OOO to use the Sai Head, allowing him to have a hard and strong head, perfect for headbutts and can manipulate gravity when using the Sagohzo Combo. After the death of Gamel, only two of them remain before being sucked the black hole that was caused by the destruction of the Kyoryu Greeed. After Movie War Megamax, Eiji has one copy of this Medal.
 * Shachi Medal (シャチメダル, Shachi Medaru): The Shachi Medal is the Killer Whale-themed O Medal. As a Head Core Medal, normally, it allows him to receive and emit sonic waves, shoot out streams of water and dive underwater for up to 3 hours; whereas it is also able to turn his body into a liquid-like state in the Shauta Combo. After the death of Mezool, only two of them remained before being sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Ptera Medal (プテラメダル, Putera Medaru): The Ptera Medal is the Pteradactyl-themed O Medal. As a Head Core Medal, it allowed him to use the External Fins to fly in Putotyra Combo along with creating freezing winds that encase the opponent in ice. It also allows OOO to fly. Due to the Purple Cores being made to get rid of desire, the Ptera Medal cannot be used to form a Random Combo. After the death of the Kyoryu Greeed, all four of them were shattered when they were sucked into the black hole that was caused by the destruction of the Kyoryu Greeed. After Super Hero Taisen, Eiji now has a copy of this Medals, despite it would be normally impossible.
 * Cobra Medal (コブラメダル, Kobura Medaru): The Cobra Medal is the Cobra-themed O Medal. As a Head Core Medal, it allows his eyesight to be doubled, as well as gaining infra-red perception and can even see in absolute darkness. In the Burakawani Combo, the Cobra Medal gives OOO the ability to make any flute become the Burahngi, as so it'll make the ponytail on the back of the Cobra Head to transform into a pale-orange scaled and purple-eyed cobra and attack according to OOO's mental demands. The Cobra Medal only appears in The Shogun and the 21 Core Medals.

Arms:

 * Tora Medal (トラメダル, Tora Medaru): The Tora Medal is the Tiger-themed O Medal given to OOO by Ankh. As a Arms Core Medal it allows OOO to use his Tora Claw gauntlets as weapons. It was one of four initital Core Medals OOO could utilize. After the death of Kazari, all three of them were remained before being sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Kamakiri Medal (カマキリメダル, Kamakiri Medaru): The Kamakiri Medal is the Praying Mantis-themed O Medal. As an Arms Core Medal, it arms OOO with the Kamakiri Sword gauntlets as weapons. It was one of four initital Core Medals OOO could utilize. After Uva's demise, all three of them are sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Unagi Medal (ウナギメダル, Unagi Medaru): The Unagi Medal is the Electric Eel-themed O Medal. It allows OOO to use the Unagi Arms' weapons, the Unagi Whips, which shocks the target upon contact. Leaving the Unagi Whips in the Unagi Shoulders will charge the whips. After the death of Mezool, only two of them had remained before being sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Gorilla Medal (ゴリラメダル, Gorira Medaru): The Gorilla Medal is the Gorilla-themed O Medal. As an Arms Core Medal it allows OOO to fire his Gori Bagon gauntlets at an opponent like missiles. After the death of Gamel, only two of them remained before being sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Kujaku Medal (クジャクメダル, Kujaku Medaru): The Kujaku Medal is the Peacock-themed O Medal. Until episode 20, Kazari took it for himself until Ankh stole it from him after making a diversion. It allows Kamen Rider OOO to use the Kujaku Arms, arming him with the Taja Spinner and the ability to fly when in the Tajadol Combo. Ankh finds another copy of this Medal during the events of Movie War Core. After Ankh's sacrifice, the remaining two copies are sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Torikera Medal (トリケラメダル, Torikera Medaru): The Torikera Medal is the Triceratops-themed O Medal. As an Arms Core Medal, it allows OOO to use the Wind Stinger horns that are mounted on the Torikera Shoulders, which can stretch into various lengths according to OOO's command. Due to the Purple Cores being made to get rid of desire, the Torikera Medal cannot be used to form a Random Combo. After the death of the Kyouryu Greeed, all three of them were shattered when they were sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Imagin Medal (イマジンメダル, Imajin Medaru): The Imagin Medal is the Momotaros-themed Core Medal, appearing in Let's Go Kamen Riders, created from Momotaros' body, which arms OOO with the large Orenotsuno (オレノツノ, lit. "My Horns") Shoulders which can be used as a powerful weapon; however Momotaros only believes that they are a decoration to let Kamen Rider OOO fight "in style". The Imagin Medal only appears in Let's Go Kamen Riders as the Imagin Medal alongside the Shocker Medal dissolve at the end of the film, after the timeline was restored.
 * Kame Medal (カメメダル, Kame Medaru): The Kame Medal is the Turtle-themed Core Medal that arms Kamen Rider OOO's arms with two carapace-like shields called "Goura Guardner", shaped like a turtle shell split in half, with each half resting on each arm. When he puts them together, he can use a energy shield. The Kame Medal only appears in The Shogun and the 21 Core Medals.

Legs:

 * Batta Medal (バッタメダル, Batta Medaru): The Batta Medal is the Grasshopper-themed O Medal given to Kamen Rider OOO by Ankh. As a Core Medal, it allows OOO to use the Batta Legs to jump and kick with great strength. When used in Scanning Charge or when energy is pushed into the legs, the legs become more grasshopper-like, allowing OOO to jump high in the air to perform a Rider Kick or to reach higher places. It was one of four initital Core Medals OOO could utilize, and once belonged to Uva. After Uva's demise, all three of them are sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Cheetah Medal (チーターメダル, Chītā Medaru): The Cheetah Medal is the Cheetah-themed O Medal. As a Core Medal it allows OOO to use the Cheetah Legs to move at blurring speeds and use rapid-fast kick attacks. After the death of Kazari, all three of them remained before sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Tako Medal (タコメダル, Tako Medaru): The Tako Medal is the Octopus-themed O Medal that allows OOO to use the Tako Legs, which can use suckers on his feet to attach to floors, walls, and ceilings, as well as being able to split up into eight legs that can trap a target, barrage a target with kicks or become a drill when used in Scanning Charge. After the death of Mezool, only two of them remained before being sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Zou Medal (ゾウメダル, Zō Medaru): The Zou Medal is the Elephant-themed O Medal. As a Core Medal it allows OOO to use the Zou Legs to cause minor earthquakes with a mere step of his foot. After the death of Gamel, all three of them remained before sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Condol Medal (コンドルメダル, Kondoru Medaru): The Condol Medal is the Condor-themed O Medal. It allows Kamen Rider OOO to use the Condol Legs, allowing him to use talon-like attachments to enhance his kicks. Ankh found one during the events of Movie War Core. In the series, it was revealed that Kougami has a copy of this Medal, and intended to give to Eiji, but he declined so Ankh wouldn't leave Shingo's body to die but was later used during the fight with the Lion-Kurage Yummy. After Ankh's sacrifice, the remaining two copies are sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Tyranno Medal (ティラノメダル, Tirano Medaru): The Tyranno Medal is the Tyrannosaurus Rex-themed O Medal. As a Leg Core Medal, it allows OOO to use the Tyranno Legs, which can use a tail to give a devastating blow by the use of the thigh armor and use the Legsteranail claws on the feet to attack enemies with kicks. Due to the Purple Cores being made to get rid of desire, the Tyranno Medal cannot be used to form a Random Combo. After the death of the Kyouryu Greeed, all three of them were shattered when they were sucked into the black hole that was caused by the destruction of the Kyoryu Greeed.
 * Shocker Medal (ショッカーメダル, Shokkā Medaru): The Shocker Medal is a Core Medal appearing exclusively in Let's Go Kamen Riders. It was discovered and modified by Shocker for the Shocker Greeed, which bears it's Eagle insignia. It allows OOO to use the Shocker Legs, which are very similar to the Condol Legs. The Shocker Medal only appears in Let's Go Kamen Riders as the Shocker Medal alongside the Imagin Medal dissolve at the end of the film when the timeline was fixed.
 * Wani Medal (ワニメダル, Wani Medaru): The Wani Medal is the Crocodile-themed O Medal. As a Leg Core Medal, it allows OOO to use the Wani Legs, allowing him to use the sharp saw-like attachments known as the Saw Deadscythers to cut through enemies while his kicks project a crocodile head "biting" the opponent on contact. The Wani Medal only appears in The Shogun and the 21 Core Medals.

Other:

 * Panda Medal (パンダメダル, Panda Medaru): The white Panda Medal was given out with the March 2011 issue of Televi Magazine. It is only used in the Kamen Rider Battle: Ganbaride game where it is a Core Medal that arms Kamen Rider OOO with the Panda Arms (パンダアーム, Panda Āmu) that utilize the Panda Claw (パンダクロー, Panda Kurō) gauntlets. Visually, it is a palette swap of the Tora Arms. In the games and in the Televi Magazine issue, it is illustrated in the use of the Takapanba (タカパンバ) Random Combo. Scanning Charge finishers with any combo using the Panda Medal are called the Panda Giant Storm (パンダ･ジャイアントストーム, Panda Jaianto Sutōmu), where Kamen Rider OOO does a body slam on the target, then spins the target around before performing a backbreaker to fling the target into the air.
 * Sasori Medal (サソリメダル, Sasori Medaru), Kani Medal (カニメダル, Kani Medaru), Ebi Medal (エビメダル, Ebi Medaru): The black Sasori, Kani, and Ebi Medals appear during the events of Kamen Rider x Kamen Rider OOO & W Featuring Skull: Movie War Core as the items that transform Nobunaga into the Armored Warrior Inhumanoid, and are later used to power Kamen Rider Core. Kamen Rider Core was destroyed alongside the three black Core Medals and Memory Memory by Kamen Rider OOO TajadolCombo and Kamen Rider W CycloneJoker Gold Xtreme. While the toy Core Medals are compatible with the DX OOO Driver, they do not have a special Combo announcement.
 * Kangaroo Medal (カンガルーメダル, Kangarū Medaru): The brown Kangaroo Medal was given out with the August 2011 issue of Televi-Kun magazine to go along with the Kamen Rider OOO Hyper Battle DVD. Unlike other Core Medals, the Kangaroo Medal can be used as either an Arm Medal where it arms Kamen Rider OOO with boxing gloves, called the Gangan Gloves (ガンガングローブ, Gangan Gurōbu), as in the Combo Takagaruba (タカガルバ), or as a Leg Medal where it gives Kamen Rider OOO spring-loaded jumps and kicks while adorning him with what looks like sneakers, as in the Combo Takatoragaru (タカトラガル). However, the Kangaroo Medal disappeared after the fight against the second Bison and Shachi-Panda Yummy. When used in the Ganbaride game, Takagaruba has a finishing attack called the Kangaroo Champion Puncher (カンガルー･チャンピオン･パンチャー, Kangarū Chanpion Panchā), which is similar to the finisher in the one used in the Hyper Battle DVD.
 * Same Medal (サメメダル, Same Medaru), Kujira Medal (クジラメダル, Kujira Medaru), Ookamiuo Medal (オオカミウオメダル, Ōkamiuo Medaru): The light blue shark medal, dark blue whale medal, and dark red wolf medal appear during Movie War Megamax. They are used by Kamen Rider Poseidon, and are eventually used by Foundation X.
 * X Medal (Xメダル, Ekkusu Medaru), Amazon Medal (アマゾンメダル, Amazon Medaru), Stronger Medal (ストロンガーメダル, Sutorongā Medaru): Core Medals representing three of the seven sealed Kamen Riders which appear during the events of Kamen Rider x Kamen Rider Fourze & OOO Movie War Megamax that, along with the #1, #2, V3, and Riderman Astroswitches, are in Foundation X's possession. Kamen Rider OOO is able to release the Riders by putting them into the OOO Driver and scanning them which activates a Scanning Charge. These Medals are based on Legend Rider Medals (レジェンドライダーメダル, Rejendo Raidā Medaru) which used to be compatible with the Kamen Rider Battle: Ganbaride arcade game.

Cell Medals
Cell Medals (セルメダル, Seru Medaru) are silver O Medals and come from the Greeed, but also make up the bodies of the Yummy. These Medals are a manifestation of human desire that hold tremendous power. While the Greeed were sealed away, the Kougami Foundation studied and gathered the Cell Medals, incorporating them in their Ride Vendor, Medajalibur, and Candroid technology. Whereas Core Medals can be used and reused without effect done on the Medals, Cell Medals only have a limited amount of energy and vanished when the energy has been depleted.

Unlike Kamen Rider OOO who uses Core Medals, Birth uses these Cell Medals to transform or access weapons. These Medals can be used to transform into Birth or used in a Cell Burst. No specific Cell Medal is required for Kamen Rider Birth to transform, summon a Birth CLAWs armament, or initiate a Cell Burst attack. Unlike OOO's Core Medals, Cell Medals can only be used once. After said use, their energy is depleted, and they fade away. Also unlike OOO's cores, which can only be destroyed, Cell Medals can be broken, as demonstrated by Uva's shattering Cell Medals to make Waste Yummies.

Super Core Medals
Super Core Medals (スーパーコアメダル, Sūpā Koa Medaru) are enhanced Core Medals created from technology 40 years in future in Movie War Megamax, enabling Kamen Rider OOO to evolve from his base Tatoba Combo into Super Tatoba Combo. They are similar in design to the Core Medals; but in addition to the gold edges, they also feature a gold design of the animal they represent. Only three pieces of Super Medals have been revealed in the movie. Michal Minato obtained three Super Core Medals from the future and gave them to Eiji, as thanks for the lesson of what it means to be a Kamen Rider. This Super Core Medals are not released as a toyline.
 * Super Taka Medal (スーパータカメダル, Sūpā Taka Medaru): The Super Taka Medal arms Kamen Rider OOO with the Super Taka Head (スーパータカヘッド) Sūpā Taka Heddo), which looks similar to the Taka Head Brave in the Tajadol Combo.
 * Super Tora Medal (スーパートラメダル, Sūpā Tora Medaru): The Super Tora Medal arms Kamen Rider OOO with the Super Tora Arms (スーパートラアーム, Sūpā Tora Āmu), arming him with the the more longer and sharper Tora Claw Solid (トラクローソリッド, Tora Kurō Soriddo) gauntlets.
 * Super Batta Medal (スーパーバッタメダル, Sūpā Batta Medaru): The Super Batta Medal arms Kamen Rider OOO with the spiked Super Batta Legs (スーパーバッタレッグ, Sūpā Batta Reggu), allowing him to jump higher and kick with extra strength.