Fullbottles

Fullbottles (フルボトル) are the sample bottle-like collectible devices used by the transformation gear in Kamen Rider Build. Conversely, a Bottle without any power is known as an Empty Bottle (エンプティーボトル)

Overview
Fullbottles contain the purified Nebula Gas from the Smash. Sento Kiryu created the Build Driver to use them in order to transform into Kamen Rider Build.

After Build defeats a Smash, he uses an Empty Bottle to absorb the gas from the victim, causing the Bottle to swell and gain a black spiderweb pattern. Through a mysterious power held by Misora Isurugi and a modified microwave machine in nascita's basement, the harmful properties are purified, leading to the creation of a Fullbottle which can then be used by Build.

Before undergoing the purification process, the contents of an unpurified Bottle can be poured upon the victim, transforming them back into a Smash.

Functionality
Two Fullbottles are used at once in the Build Driver, one organic and one inorganic. Any pair of organic and inorganic Fullbottles can be used to create a Trial Form (トライアルフォーム), but each Fullbottle has a Best Match (ベストマッチ) with another one, creating a perfect combination of powers. If they are used together, they create an especially powerful Best Match form.

Kamen Rider Cross-Z uses only the Dragon Fullbottle to transform, by inserting it into an adapter called the ClawsDragon, and inserting it into the Build Driver.

Night Rogue and Blood Stalk use Fullbottles to transform by inserting them into the Transteam Gun.

Fullbottles may be inserted into certain weapons such as the Drill Crusher or Beat Clawser to activate special finisher attacks. The Lion Fullbottle is used to turn the BuildPhone from phone to bike mode.

Fullbottles can also be utilized to give their users in civilian form temporary superhuman abilities by shaking them. (Ex. The Rabbit Fullbottle gives Sento temporary super speed and agility to evade attacks.)

List of Fullbottles
{{#tag:tabber| Standard= {{#tag:tabber| Build= {{#tag:tabber| Left slot= Fullbottles inserted into the left slot of the Build Driver are always themed after something organic. They affect the left half of Build's head, his right arm, and his left leg.
 * {{nihongo|Rabbit Fullbottle|ラビットフルボトル|Rabitto Furubotoru}}: Used by Build to Best Match with Tank and access RabbitTank Form. Gives the user increased agility and speed.
 * {{nihongo|Gorilla Fullbottle|ゴリラフルボトル|Gorira Furubotoru}}: Used by Build to Best Match with Diamond and access GorillaMond Form. Extracted from the Strong Smash. {{Storylink|That One with the Best Match}} Gives the user superhuman strength.
 * {{nihongo|Taka Fullbottle|タカフルボトル|Taka Furubotoru|lit. Hawk Fullbottle}}: Used by Build to Best Match with either Gatling to access HawkGatling Form, or Medal to access a form themed after Kamen Rider OOO. Extracted from the Flying Smash. {{Storylink|Borderline of Justice}}
 * {{nihongo|Ninjya Fullbottle|忍者フルボトル|Ninja Furubotoru|lit. Ninja Fullbottle}}: Used by Build to Best Match with Comic and access NinninComic Form. Extracted from the Mirage Smash. {{Storylink|Borderline of Justice}}
 * {{nihongo|Panda Fullbottle|パンダフルボトル|Panda Furubotoru}}: Used by Build to Best Match with Rocket and access RocketPanda Form. Extracted from the Press Smash. {{Storylink|Moonsault of Anger}}
 * {{nihongo|Harinezumi Fullbottle|ハリネズミフルボトル|Harinezumi Furubotoru|lit. Hedgehog Fullbottle}}: Used by Build to Best Match with Shoubousha and access FireHedgehog Form. Extracted from the Needle Smash. {{Storylink|That One with the Best Match}} Gives the user a spike weapon for melee combat.
 * {{nihongo|Lion Fullbottle|ライオンフルボトル|Raion Furubotoru}}: Used by Build to Best Match with Soujiki and access LionCleaner Form. Also used to turn the BuildPhone into the Machine Builder when inserted.
 * {{nihongo|Kaizoku Fullbottle|海賊フルボトル|Kaizoku Furubotoru|lit. Pirate Fullbottle}}: Used by Build to Best Match with Densha and access KaizokuRessha Form.
 * {{nihongo|Octopus Fullbottle|オクトパスフルボトル|Okutopasu Furubotoru}}: Used by Build to Best Match with Light and access OctopusLight Form.
 * {{nihongo|Dragon Fullbottle|ドラゴンフルボトル|Doragon Furubotoru}}: Used by Build to Best Match with Lock and access KeyDragon form. Extracted from the Burn Smash. {{Storylink|The Innocent Runaway}} Allows the user to punch with incredible strength.
 * {{nihongo|Phoenix Fullbottle|フェニックスフルボトル|Fenikkusu Furubotoru}}: Used by Build to Best Match with Robot and access PhoenixRobo Form.
 * {{nihongo|Wolf Fullbottle|ウルフフルボトル|Urufu Furubotoru}}: Used by Build to Best Match with Sumaho and access SumahoWolf Form.
 * {{nihongo|Unicorn Fullbottle|ユニコーンフルボトル|Yunikōn Furubotoru}}: Used by Build to Best Match with Keshigomu and access UniRaser Form.
 * {{nihongo|Scorpion Fullbottle|スコーピオンフルボトル|Sukōpion Furubotoru}}: Used by Build to Best Match with Gold and access GoldScorpion Form.
 * {{nihongo|Tora Fullbottle|トラフルボトル|Tora Furubotoru|lit. Tiger Fullbottle}}: Used by Build to Best Match with UFO and access ToraUFO Form.
 * {{nihongo|Kujira Fullbottle|クジラフルボトル|Kujira Furubotoru|lit. Whale Fullbottle}}: Used by Build to Best Match with Jet and access KujiraJet Form.
 * {{nihongo|Turtle Fullbottle|タートルフルボトル|Tātoru Furubotoru}}: Used by Build to Best Match with Watch and access TurtleWatch Form.
 * {{nihongo|Shika Fullbottle|シカフルボトル|Shika Furubotoru|lit. Deer Fullbottle}}: Used by Build to Best Match with Pyramid and access ShikaMid Form.
 * {{nihongo|Kirin Fullbottle|キリンフルボトル|Kirin Furubotoru|lit. Giraffe Fullbottle}}: Used by Build to Best Match with Senpuki and access KirinCyclone Form.
 * {{nihongo|Penguin Fullbottle|ペンギンフルボトル|Pengin Furubotoru}}: Used by Build to Best Match with Sukebo and access PenguinSkater Form.

}}

Unused Fullbottles and Best Matches
Hacking the pin combinations on the DX Build Driver toy reveals sounds for Fullbottles and Best Matches currently not set to be used as real forms or toys.
 * Kyouryuu (恐竜) & F1: "Are you Ready? Onsoku no Teiou! (音速の帝王) F1Saurus! Yeahhh!"
 * Same (鮫) & Bike (バイク): "Are you Ready? Dokusou Hunter! (独走ハンター) SameBike! Yeahhh!"
 * Spider (スパイダー) & Reizoko (冷蔵庫): "Are you Ready? Reikyaku no Trap Master! (冷却のトラップマスター) SpiderCooler! Yeahhh!"
 * Kabutomushi (甲虫) & Camera: "Are you Ready? Mitsurin no Scoop King! (密林のスクープキング) BeetleCamera! Yeahhh!"
 * Obake & Magnet (マグネット): "Are you Ready? Samayoueru Chouinryoku! (彷徨える超引力!) MagGhost! Yeahhh!"
 * Rose (ローズ) & Helicopter (ヘリコプター): "Are you Ready? Jounutsu no Senpuuki! (情熱の扇風機) RoseCopter! Yeahhh!"
 * Bat & Engine (エンジン): "Are you Ready? Ankou no Kidou-ou! (暗黒の機動王) BatEngine! Yeahhh!"
 * Hachi (ハチ) & Sensuikan (潜水艦): "Are you Ready? Shinkai no Shigotojin! (深海の仕事人) HachiMarine! Yeahhh!"
 * Sai (サイ) & Dryer (ドライヤー): "Are you Ready? Jounetsu Tairiku! (情熱大陸!) SaiDryer! Yeahhh!"
 * Kuma (クマ) & Terebi (テレビ): "Are you Ready? Hachimitsu High Vision! KumaTerebi! Yeahhh!"
 * Dog (ドッグ) & Mic (マイク): "Are you Ready? Yakki no Daibakuon! DogMic! Yeahhh!"
 * Crocodile (クロコダイル) & Rimokon (リモコン): "Are you Ready? Mizugiwa no Denpa yarou! CrocodiCon! Yeahhh!"
 * Kappumen (カップ麺) & Energy Drink (エナジードリンク): "Are you Ready? Soukou Genki! CupEnergy! Yeahhh!"
 * Ghost (ゴースト) & Ex-Aid: "Are you Ready? Batchi Level Up! GhostEx-Aid! Yeahhh!"
 * Gaim (ガイム) & Drive (ドライブ): "Are you Ready? Kajitsu no Top Gear! GaimDrive! Yeahhh!"
 * Wizard (ウィザード) & Fourze (フォーゼ): "Are you Ready? Maho no Uchu Ryoko! FourzeWizard! Yeahhh!"
 * Keisatsukan (警察官) & F1: "Are you Ready? Drive! Yeahhh!"
 * Kamen Rider (仮面ライダー) & Super Sentai (スーパー戦隊): "Are you Ready? NichiAsa Saikou! Super Hero Time! Yeahhh!"
 * Buttobasoul (ブットバソウル) & Ganbarizing (ガンバライジング): "Are you Ready? Kikaijikake no Touginjou! ButtobaGanba! Yeahhh!"