Kaizoku Gattai GokaiOh

Pirate Gattai GokaiOh (海賊合体ゴーカイオー, Kaizoku Gattai Gōkaiō,Pirate Combination Five Ocean King) is a giant robot formed from the Gokai Galleon and the Gokai Machines. An agile machine, it is armed with the twin Gokai Ken (ゴーカイケン, Gōkai Ken) swords and the built-in Gokai Hō (ゴーカイホー, Gōkai Hō) chest cannon. It also has the one-off Gokai Bat weapon, a gigantic baseball bat with the Gokaiger name on it, used against the Sneak Brothers; more specifically, the Elder Brother. Its finishing attack is the Gokai Star Burst (ゴーカイスターバースト, Gōkai Sutā Bāsuto), where the wheel on GokaiOh's back spins and the hatches on each limb opens up, revealing a unlimited line of cannon balls in each limb which are then fired out of the Gokai Hō in rapid succession.

GokaiGalleon
The Gokai Galleon (ゴーカイガレオン, Gōkai Gareon) is a three-masted galleon-like spacecraft, originally possessed by AkaRed with his Red Pirate shipmates, Marvelous and Basco ta Jolokia, Basco betrayed the two, with AkaRed saving Marvelous and disappearing. When Marvelous recruits four people to complete the Gokaigers, they use the ship as their base of operations as they search for the Greatest Treasure in the Universe.

It is equipped with the Galleon Cannons (ガレオンキャノン, Gareon Kyanon) and several beam cannons on its wings. It holds the four other Gokai Machines in a fashion similar to a Matryoshka doll, with Gokai Trailer as the second largest mecha, the third being Gokai Marine, fourth is Gokai Racer and Gokai Jet being the fifth. As part of GokaiOh, the Gokai Galleon forms the robot's head and torso.

GokaiJet
The GokaiJet is GokaiBlue's jet mecha. It forms the right arm & hat of GokaiOh. It is armed with a series of beam and vulcan cannons as well as a powerful energy cannon.

GokaiTrailer
The GokaiTrailer is GokaiYellow's tractor trailer mecha. It forms the left leg of GokaiOh. Its offensive abilities lie in its strong ramming power.

GokaiRacer
The GokaiRacer is GokaiGreen's race car mecha. It forms the left arm of GokaiOh. It is armed with a beam cannon and an energy cannon.

GokaiMarine
The GokaiMarine is GokaiPink's submarine mecha. It forms the right leg of GokaiOh. It is armed with a beam cannon, tracking torpedoes, and homing mines.

Greater Power-caused Finishers

 * When the Gokaigers use the Greater Power of the Gekiranger Keys, GokaiOh unleashes Geki-based manifestations of the core three GekiBeasts, GekiWolf, and SaiDain for the Gokai Great Geki-Geki Beasts(ゴーカイ大激激獣 Gōkai Dai Geki Geki Jū) stampede-like attack.
 * When the Gokaigers use the Greater Power of the Carranger Keys, GokaiOh can preform the Gokai Radical Racing Slash (ゴーカイ激走斬り, Gokai Gekisou Giri) spin slash attack, a finisher that RV Robo used to use.
 * When the Gokaigers use the Greater Power of the Goseiger Keys, they summon the Goseigers' totem Gosei Headders, as well as the Seaick, Landick, and Skick Brother Headders for the Gokai All Headder Great Charge (ゴーカイオールヘッダー大進撃Gōkai Ōru Heddā Daishingeki) attack, the Headders ramming into their target, similar to Hyper Gosei Great's Hyper Strike finisher.
 * When the Gokaigers use the Greater Power of the Boukenger Keys, they summon DaiBouken to attack the opponent with several slashes with the GoGo Ken, then tosses the GoGo Ken to GokaiOh to execute the Gokai Adventure Drive (ゴーカイアドベンチャードライブ, Gōkai Adobenchā Doraibu) attack.
 * When the Gokaigers use the Greater Power of the GoGo-V Keys, they summon the Chemical Extinguishers from within GokaiOh's hatches and the Gokai Hō, which can be used to perform the Victory Splash (ビクトリースプラッシュ, Bikutorī Supurasshu) attack. GokaiOh can then perform a finishing attack called the Gokai Prominence (ゴーカイプロミネンス, Gōkai Purominensu) using a charged cross slash with the Gokai Ken.
 * In Kaizoku Sentai Gokaiger the Movie: The Flying Ghost Ship, The Gokaigers summon the Variblune, MagiDragon, the Pat Striker, GekiTiger, and the Dragon Headder all at once to finish off the Fake Gokaioh.
 * When the Gokaigers summon the Greater Power of the Liveman Keys, the personal icons of the Livemen come out of the hatches and transform GokaiOh into Super Live Robo, the first Sentai mech that was formed out of two other mechs, to execute its signature finisher attack, the Super Big Burst(スーパービッグバースト, Sūpā Biggu Bāsuto).

Magi GokaiOh
When the Gokaigers use the Magiranger Keys, GokaiOh becomes Magi GokaiOh (マジゴーカイオー, Magi Gōkaiō) with parts of the Magi Dragon emerging from the limb hatches and Gokai Hō. In this state, MagiGokaiOh can fly and even have Magi Dragon separate from it to attack independently. Its finishing attack is the Gokai Magi Bind (ゴーカイマジバインド, Gōkai Maji Baindo) during which MagiDragon is launched from GokaiOh, then circles the target three times, each pass making a Magiranger seal that then constricts the target. Once done three times, a beam of multi-colored magic rains down on the target.

Deka GokaiOh
When the Gokaigers use the Dekaranger Keys, GokaiOh becomes Deka GokaiOh (デカゴーカイオー, Deka Gōkaiō) with parts of the Patrol Striker emerging from its limb hatches and Gokai Hō. In this state, DekaGokaiOh can use the parts of the Patrol Striker in its arms as firearms in its attacks and even have the Patrol Striker separate from it to attack independently. It's finishing attack is the Gokai Full Burst (ゴーカイフルブラスト, Gōkai Furu Burasuto) during which DekaGokaiOh fires all of Pat Striker's guns in rapid succession to mow down the target in a hail of bullets.

Gao GokaiOh
When the Gokaigers use the Gaoranger Keys, they summon GaoLion which combines with GokaiOh to become Gao GokaiOh (ガオゴーカイオー, Gao Gōkaiō), a formation similar to GaoKentaurus. Gao GokaiOh's finishing attack is the Gokai Animal Heart (ゴーカイアニマルハート, Gōkai Animaru Hāto), releasing a powerful energy beam from GaoLion and two powerful slashes from the Gokai Ken.

Shinken GokaiOh
When the Gokaigers use the Greater Power of the Shinkenger Keys, they summon GaoLion who undergoes the Gao GokaiOh transformation before combining with GokaiOh to become Shinken GokaiOh (シンケンゴーカイオー, Shinken Gōkaiō), a formation similar to Samurai Gattai ShinkenOh, as well as Hyakujuu Gattai GaoKing. Shinken GokaiOh has access to the Fire, Water, Earth, Wood, and Heaven Modikara, enabling it to control the elements. Shinken GokaiOh's finishing attack is the Gokai Samurai Slash (ゴーカイ侍斬り, Gōkai Samurai Giri), summoning a mecha-scale Rekka Daizantou engulfed in flames as hot as 1,000 °C (1,830 °F) which then cleaves through the target.

Goren GokaiOh
When the Gokaigers use the Goranger Keys, they summon Variblune which combines with GokaiOh to become Goren GokaiOh (ゴレンゴーカイオー, GorenGōkaiō). In this state, GorenGokaiOh can fly/hover by using the propellers on the Variblune as a helicopter pack. GorenGokaiOh's finishing attack is the Gokai Hurricane Cassiopeia (ゴーカイハリケーン・カシオペア, Gōkai Harikēn Kashiopea), where the Gokai Ken are combined into one sword then enlarged to an incredible size, possibly to the length of Shinken GokaiOh's Rekka Daizantou, then executes a chopping slash, all while the five colored stars of the Gorangers appear in a "W" formation on the blade. Goren GokaiOh first appears in Gokaiger Goseiger Super Sentai 199 Hero Great Battle.

Hurricane GokaiOh
When the Gokaigers use the Hurricanger Keys, they summon Fuuraimaru, which Gokaioh combines with in order to become Hurricane GokaiOh (ハリケンカイオー, Hariken Gōkaiō). In this state, Hurricane GokaiOh resembles Tenrai Senpuujin. It is covered with shuriken and is armed with a flail-like weapon called the Shushutto Shuriken Chain (シュシュッと手裏剣チェーン, Shushutto Shuriken Chēn). One of this form's two finishing attacks is called the Gokai Infinite Shuriken (ゴーカイ無限手裏剣, Gōkai Mugen Shuriken) during which Hurricane Gokaioh sends off a flurry of shuriken from the arms and legs, similar to Deka GokaiOh's Gokai Full Burst finisher, that strikes the target. The other finishing attack is called the Gokai Wind-Thunder Attack (ゴーカイ風雷アタック, Gōkai Fūrai Atakku), which has Fuuraimaru separate from Hurricane Gokaioh before he uses the Secret Finisher: Turbulence Cherry Blossoms (必殺奥義・乱れ桜, Hissatsu Ōgi: Midare Zakura) to clone himself, then the clones and the original attack the target with their shurikens.

Go-On GokaiOh
When the Gokaigers use the Go-Onger Keys, they summon Engine Machalon which combines with GokaiOh to become Go-On GokaiOh (ゴーオンゴーカイオー, Gōon Gōkaiō). Go-On GokaiOh can also fly in the air thanks to Machalcon's Hover Mode (ホバーモード, Hobā Mōdo). Go-On GokaiOh's finishing attack is the Gokai Go-On Grand Prix(ゴーカイゴーオングランプリ, Gōkai Gōon Guran Puri), which is a decending overhead slash with a Gokai Ken.