Shuriken Gattai Shurikenjin

"Soiya Soiya! Wasshoi Ninja! Soiya Soiya! Wasshoi Ninja! Shurikenjin!"

- Shurikenjin combination

Shuriken Gattai Shurikenjin (手裏剣合体シュリケンジン) is the main Giant Robo of the Ninningers. It is made up of five OtomoNin (オトモ忍).

Overview
Shurikenjin is formed when AkaNinger spins his OtomoNin Shuriken in the Ninja Ichibantou and announces Shuriken Combination (シュリケン合体). During the formation, Shinobimaru assists the other OtomoNin in combining into a giant exosuit, the pilot seat of which it climbs into as a giant OtomoNin Shuriken: Red forms the head.

Like some other Sentai Mecha, Shurikenjin is able to assume different forms and powers by swapping out its primary components for auxillary components. However, instead of swapping out limbs, Shurikenjin swaps out its control unit with Shinobimaru replacing one of the arms while the auxillary mech takes its place in the pilot seat.

In its default formation with Shinobimaru as its control unit, Shurikenjin is armed with the Drago Sword (ドラゴソード) formed from Dragomaru's tail and the Drago Shield (ドラゴシールド) formed from Dragomaru's wings mounted on its left arm. It's default finisher is the Shurikenjin: Splendid Slash (シュリケンジン・アッパレ斬り)where the Drago Sword charges with an energy and slashes the opponent.

Certain Nin Shurikens were able to grant Shurikenjin special moves. Among them are:
 * Kakuranger: Uses the Ninja Art: Cloning Technique (忍法・分身の術), utilizing NinjaRed's special ability of creating clones/illusions of itself onto the target before striking them.
 * Hurricaneger: Uses the Super Ninja Art: Air Gallop (超忍法・空駆け), utilizing HurricaneRed's aerial superiority where Shinobimaru temporarily ejected to move faster and rapidly strike the opponent.

Appearances: Episodes 1-3, Ninninger vs Drive, Super Hero Taisen GP, 6, 7, 11-17, 21-24, 27, 29, 31, 36, 39-42, Ninninger vs ToQger, 44-47, Ninnin Girls vs. Boys FINAL WARS, Zyuohger vs Ninninger

History
The Companion Ninjas were first created as Nin Shuriken by Yoshitaka Igasaki after knowing that his grandchildren would face giant Youkai or other gigantic enemies. He also require helps from various alien races, using alien technology (mainly UFOmaru as it's design basis) in the OtomoNin creations, as well as using their likeness into it.

The Ninningers were provided with the OtomoNin Shurikens when faced with the first enlarged Yokai, Kamaitachi. Using them to summon their personal OtomoNin, the five Ninningers worked together to outmanoeuvre their opponent before combining their OtomoNin to form the Shuriken Gattai Shurikenjin for the first time, destroying Kamaitachi with the Splendid Slash.

Combining the OtomoNin immediately against the giant Yokai Kappa, Shurikenjin was forced to deal with the Yokai's power of flight as it attempted to flee. Making a leap in an attempt to intercept Kappa, AkaNinger's Shinobimaru was left in a pinch against the Yokai before being saved by Dragomaru piloted by AoNinger, who took charge as he formed Shurikenjin Drago for the first time, destroying Kappa with the Drago Burst.

Engaging the powerful Giant Yokai Gashadokuro that had been summoned by Kyuemon, an opening was provided thanks to KiNinger's Dumpmaru that allowed the OtomoNin to form Shurikenjin and beat back the Yokai before destroying it with the Splendid Slash.

Facing a duo of, consisting of the   and the  , who had been enlarged by Kyuemon, in the world of Kamen Rider, the Ninningers summoned UFOmaru to assist them. With UFOmaru quickly neutralizing the flying 016, they proceeded to form Shurikenjin UFO, bombarding the Roidmudes with the UFOmaru Launcher before proceeding to finish them off with the UFO Big Bang, terminating their along with their bodies. However, UFOmaru mysteriously vanished immediately after, with Kyuemon revealing before taking his leave that as anomalies which had been transported to the Kamen Riders' world through a dimensional distortion, the Ninningers and the OtomoNin would be erased from existence, UFOmaru being the first to go as the oldest of the OtomoNin. UFOmaru was later restored along with Yoshitaka and Tsumuji following the destruction of 's reincarnated Yokai Buruburu,, who housed the prototype for their which caused the dimensional disturbance, by the Ninningers with the help of Kamen Riders  and. The Ninningers proceeded to return to their world with UFOmaru.

Following this, the Ninningers reappeared in the altered Kamen Rider world created by the completed History Modifying Machine during the final battle between the Kamen Riders and Shocker, forming Shurikenjin and engaging the 's which housed it. Seeing that Shurikenjin was outmatched, Yoshitaka arranged for to deliver a  Nin Shuriken to Kamen Rider Drive, which allowed him to temporarily transform his car  into an OtomoNin and join with the Ninningers to form Shurikenjin Tridoron, which ultimately destroyed the Rider Robo and History Modifying Machine with the Shurikenjin Tridoron Finish, thus returning the timeline to normal.

Facing another Gashadokuro after being trained by his Sentai Red ninja predecessors, Sasuke/NinjaRed and Yousuke Shiina/HurricaneRed, AkaNinger used the Legend OtomoNin that they had granted him to enhance Shurikenjin's fighting capabilities; first using the Kakuranger Shuriken to duplicate itself then the Hurricaneger Shuriken to give a detatched Shinobimaru an increased in speed before returning and finishing the Gashadokuro off with the Splendid Slash.

OtomoNin Shinobimaru
"Dare ja, dare ja?! Da~re, dare ja?! Dare ja, dare ja?! Da~re, dare ja?! Shinobimaru!"

- Summoning announcement

OtomoNin Shinobimaru (オトモ忍シノビマル) is AkaNinger's personal OtomoNin, taking the appearance of a giant robot ninja. When piloting Shinobimaru, AkaNinger perches on the left shoulder. Shinobomaru has a variety of different ninjutsu techniques at its disposal; allowing it to create hidden traps or passages or deploying an invisibility cloth to mask his presence. It is also extremely nimble and fast, allowing it to move and attack at great speeds, run up the side of buildings, and being agile enough to leap-frog over enemies.

Shinobimaru forms the control unit in Shurikenjin's default combination and if needed can temporarily separate from the formation to surprise attack the opponent. When other mechas take over its position in Shurikenjin's cockpit, Shinobimaru can become the new formation's left or right arm.

Appearances: Episodes 1-5, Ninninger vs Drive, Super Hero Taisen GP, 6-19, 21, The Dinosaur Lord's Splendid Ninja Scroll!, 22-24, 26-31, 36, 39-42, Ninninger vs ToQger, 44-47, Ninnin Girls vs. Boys FINAL WARS, Zyuohger vs Ninninger

OtomoNin Dragomaru
"Dare ja, dare ja?! Da~re, dare ja?! Dare ja, dare ja?! Da~re, dare ja?! Dragomaru!"

- Summoning announcement

OtomoNin Dragomaru (オトモ忍ドラゴマル) is AoNinger's European dragon-themed OtomoNin which can both fly and breathe flames in its ​Drago Fire attack. When piloting Dragomaru, AoNinger mounts himself just behind its head. Dragomaru also has it's own finisher attack, the Drago Tornado (ドラゴトルネード), where he flies around the target to creating a blue energy tornado which eliminates them, as seen on Giant Youkai Gashadokuro.

When forming Shurikenjin, Dragomaru becomes the left arm of Shurikenjin, with its tail becomimg the Drago Sword and his wings combining into the Drago Shield. When forming Shurikenjin Drago, switches places with Shinobimaru, becoming the new control unit while its tail and wings attach to Shurikenjin.

In its first appearance, Dragomaru was shown riding a giant blue kite in place of his wings before flying off on its own. This is a nod to the idea that ninjas that used kites as aerial transportation. The kite riding position was shown again in Shinobi 11, where AoNinger used his magic to help Dragomaru escaped from Rodeomaru's lasso before reverting back to it's original position.

Appearances: Episodes 1-5, Ninninger vs Drive, Super Hero Taisen GP, 6-19, 21, The Dinosaur Lord's Splendid Ninja Scroll!, 22-25, 27-31, 36, 39-42, Ninninger vs ToQger, 44-47, Ninnin Girls vs. Boys FINAL WARS, Zyuohger vs Ninninger

OtomoNin Dumpmaru
"Dare ja, dare ja?! Da~re, dare ja?! Dare ja, dare ja?! Da~re, dare ja?! Dumpmaru!"

- Summoning announcement

OtomoNin Dumpmaru (オトモ忍ダンプマル) is KiNinger's personal dump truck-themed OtomoNin. When piloting it, KiNinger usually positioned himself above the cabin on the rim of the bucket. Dumpmaru is equipped with a pair of manipulator arms at the read end of its bucket which it uses to toss its  caltrops at its opponent's feet to make them stumble. It can also carry a payload of boulders in its bucket which its manipulators can throw at the opponent or perform a team attack with KiNinger where it spins around with KiNinger holding on to one of its manipulators before tossing KiNinger into the opponent. For defensive method, Dumpmaru can initiate Dump Tatami Shield (ダンプ畳返し), where it lifts up a corner of the ground that turns into a piece of tatami floor before returning to normal.

When forming Shurikenjin or Shurikenjin Drago, Dumpmaru becomes the torso, right arm, and cockpit for the control unit. When an auxiliary mecha takes Shinobimaru's place in other Shurikenjin formations, the Dumpmaru arm will be swapped with Shinobimaru, with said right arm being stored on Shurikenjin's back. However, if Shinobimaru is occupied with his own problem, said extra arm would take his place.

Appearances: Episodes 1-5, Ninninger vs Drive, Super Hero Taisen GP, 6-19, 21, The Dinosaur Lord's Splendid Ninja Scroll!, 22-25, 27-31, 36, 39-42, Ninninger vs ToQger, 44-47, Ninnin Girls vs. Boys FINAL WARS, Zyuohger vs Ninninger

OtomoNin Wanmaru
"Dare ja, dare ja?! Da~re, dare ja?! Dare ja, dare ja?! Da~re, dare ja?! Wanmaru!"

- Summoning announcement

OtomoNin Wanmaru (オトモ忍ワンマル) is ShiroNinger's ninken (忍犬)-themed OtomoNin. When piloting it, ShiroNinger perches on the dog's back. Wanmaru can attack with the kunai that it holds in its mouth and can also emit high-frequency howls as shown in the battle against Youkai Yamabiko. Unlike the other Otomo Nin which emerge from hiding places when summoned, Wanmaru when summoned emerges from Byunmaru's back portion.

During the Shurikenjin formation, Wanmaru forms the left shin.

Wanmaru's name contains "wan" (ワン), the Japanese onomatopoeia of a dog's bark.

Appearances: Episodes 1-5, Ninninger vs Drive, Super Hero Taisen GP, 6-19, 21, The Dinosaur Lord's Splendid Ninja Scroll!, 22-24, 27-31, 36, 39-42, Ninninger vs ToQger, 44-47, Ninnin Girls vs. Boys FINAL WARS, Zyuohger vs Ninninger

OtomoNin Byunmaru
"Dare ja, dare ja?! Da~re, dare ja?! Dare ja, dare ja?! Da~re, dare ja?! Byunmaru!"

- Summoning announcement

OtomoNin Byunmaru (オトモ忍ビュンマル) is MomoNinger's magnetic levitation train-themed OtomoNin. When piloting it, MomoNinger positioned herself above the cockpit. Byunmaru attacks by manifesting the Byun Shurikens from her visor and launching them at the enemy. She can also travel upside down in order to bypass obstacles. It also carries ShiroNinger's Wanmaru into battle which it deploys from its anterior section.

As Shurikenjin, Byunmaru forms the legs and hips.

Byunmaru's name contains "Byun" (ビュン), the Japanese onomatopoeia of "going fast".

Appearances: Episodes 1-5, Ninninger vs Drive, Super Hero Taisen GP, 6-19, 21, The Dinosaur Lord's Splendid Ninja Scroll!, 22-25, 27-31, 36, 39-42, Ninninger vs ToQger, 44-47, Ninnin Girls vs. Boys FINAL WARS, Zyuohger vs Ninninger

Empty Shurikenjin
This version of Shurikenjin appears when Shinobimaru ejects the seat of Dumpmaru to either attack or switch out with Dragomaru or an auxiliary OtomoNin. This was later shown again when Shinobimaru, AkaNinger, AoNinger and MomoNinger exit Shurikenjin to save Kinji and Rodeomaru from Youkai Futakuchi-onna, thus leaving Shurikenjin unpiloted until KiNinger and ShiroNinger summon Paonmaru and UFOmaru. It was also shown when Shinobimaru ejected out of Shurikenjin so AkaNinger Chozetsu can attack a Youkai after Shurikenjin ejected out of Lion Ha-Ojo.

Another version of the empty Shurikenjin appeared when UFOmaru was erased from existence due to the Ninningers being taken to the Kamen Rider dimension.

Leaving Shurkenjin in its empty mode is always a risky maneuver as the lack of a control unit leaves it unable to either move or attack.

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Appearances: Episodes 1-2, Ninninger vs Drive, 7, 15, 22

Shurikenjin Drago
"Drago! Drago, Wasshoi! Drago! Drago, Wasshoi! Shurikenjin Drago!"

- Shurikenjin Drago combination

Shurikenjin Drago (シュリケンジンドラゴ) is an alternate combination of the five OtomoNin using Dragomaru as the control unit. To initiate the combination, AoNinger gives the Shuriken Combination (シュリケン合体)command and spins his OtomoNin Shuriken in his Ninja Ichibantou. Shinobimaru and Dragomaru then switch places with Dragomaru mounting in the pilot seat and Shinobimaru becoming the left arm while Dragomaru's wings and tail attach to the the main body and a giant Otomin Nin Shuriken: Blue forms its head.

Shurikenjin Drago specializes in aerial pursuit and combat. It can shoot energy bullets from its mouth, whip opponents with its tail, and can use its razor sharp wings to slash all over an opponent's body by flying around them. It's finisher is the Shurikenjin: Drago Burst (シュリケンジン・ドラゴバースト), where it fires a stream of energy from its mouth powerful enough to split the ground as it obliterates whatever is standing in its path.

Appearances: Episodes 2, 5, 9, 18, 22-23

Shurikenjin Paon
"Paon, Paoooooon! Wasshoi! Paon, Paooooooon! Wasshoi! Shurikenjin... Paooooon! (Indian musical fanfare)"

- Shurikenjin Paon combination

Shurikenjin Paon (シュリケンジンパオーン) is the alternate form of Shurikenjin formed when Paonmaru takes over Shinobimaru's place with the OtomoNin placed into the formation's right hand, while the giant OtomoNin Shuriken: Paon is placed on the head in place of the Shinobimaru one. This is performed when AkaNinger spins his OtomoNin Shuriken: Paon in the Ninja Ichibantou and the "Shuriken Paon Combination" (シュリケンパオーン合体) is announced. This form specializes in power-type attacks.

Shurikenjin Paon is armed with twin Paon Axes (パオンアックス) formed by Paonmaru's rear feet (machine cannons in its Humanoid Form) to hack at the giant Youkai, while the Paon Jet (パオンジェッ) used in the Normal OtomoNin form can also be used here to injure it before the finisher.

Shurikenjin Paon's finisher is Shurikenjin: Paon Boomerang (シュリケンジン・パオーンブーメラン), where the twin Paon Axes are thrown at the giant Youkai creating a X-slash before returning to the arms of Shurikenjin Paon, just like a pair of returned boomerangs.

In Shinobi 15: Youkai, I Never Failed, an alternate version of Shurikenjin Paon is seen with Dumpmaru's arm instead of Shinobimaru as the latter had left with AkaNinger to battle Rodeomaru, who was under Youkai Futakuchi-onna's control.

Appearances: Episodes 4, 6, 8, 10, 15, 39

Shurikenjin UFO
"UFO Was-shoi! UFO Was-shoi! Shurikenjin... UFO! (Dramatic space fanfare)"

- Shurikenjin UFO combination

Shurikenjin UFO (シュリケンジンUFO) is an alternate form of Shurikenjin formed when UFOmaru takes over Shinobimaru's place with the OtomoNin placed into the formation's right hand, while the giant OtomoNin Shuriken: UFO is placed on the head in place of the Shinobimaru one. This is performed when AkaNinger spins his OtomoNin Shuriken: UFO in the Ninja Ichibantou and the "Shuriken UFO Combination" (シュリケンUFO合体) is announced.

This form, which adapts UFOmaru's speed and mobility abilities, grants Shurikenjin a massive flight boost coupled with the ability to chase down and battle giant-sized Youkai that are capable of extra-atmospheric or even zero-gravity combat, patching up Shurikenjin Drago's limitation of flying only within the Earth's upper atmosphere

Shurikenjin UFO is armed with the UFOmaru Launcher (UFOマルランチャー), which typically is used as a short trident lance during normal combat to injure the enlarged Youkai before launching the finisher.

Shurikenjin UFO's finisher is Shurikenjin: UFO Big Bang (シュリケンジン・UFOビッグバン), where the robot charges up the UFOmaru Launcher to fire three guided Nin Shurikens which strikes the target in all directions to defeat the Giant Youkai, forming the Ninningers' insignia in the process.

In Shinobi 15: Youkai, I Never Failed, an alternate version of Shurikenjin UFO is seen with Dumpmaru's arm instead of Shinobimaru as the latter had left with AkaNinger to battle Rodeomaru, who was under Youkai Futakuchi-onna's control.

Appearances: Episodes 5, Ninninger vs Drive, 15, 18, 39

Shurikenjin Tridoron
Shurikenjin Tridoron (シュリケンジントライドロン) is the alternate form of Shurikenjin formed when it combines with Tridoron after it is converted into an OtomoNin by the Tridoron Shuriken. This Shurikenjin form is exclusive to the alternate Ninninger in the timeline formed by using

Much like the original Shurikenjin, Shurikenjin Tridoron's main arsenal are the Drago Sword (ドラゴソード) and the Drago Shield (ドラゴシールド).

Shurikenjin Tridoron's finisher is Shurikenjin Tridoron Finish (シュリケンジン・トライドロンフィニッシュ)

This form is exclusive to 

Shurikenjin Surfer
"Surfin'! Wasshoi! Surfin'! Wasshoi! Shurikenjin Surfer! (Guitar solo beach fanfare)"

- Shurikenjin Surfer combination

Shurikenjin Surfer (シュリケンジンサーファー) is an alternate form of Shurikenjin formed when Surfermaru takes over Shinobimaru's place with the OtomoNin placed into the formation's right hand, while the giant OtomoNin Shuriken: Surfer is placed on the head in place of the Shinobimaru one. This is performed when AkaNinger spins his OtomoNin Shuriken: Surfer in the Ninja Ichibantou and the "Shuriken Surfer Combination" (シュリケンサーファー合体) is announced.

In this formation, Shurikenjin retains the Drago Sword (ドラゴソード) as a side weapon while given a surf board that Surfermaru rides. The mecha is capable of manipulating tidal waves to increase it's advantage in surfing on the ocean.

It's finisher attack is Shurikenjin: Surfer Surfing Slash (シュリケンジン・サーファー波乗り斬り), where Shurikenjin Surfer surfs into the enemy and slashing it with Drago Sword.

Appearances: Episodes 17-18, 39

Shurikenjin Dino
"Ha! Ha! Wassho, Washo-Washo, Di~no Wasshoi! Ha! Ha! Wassho, Washo-Washo, Di~no Wasshoi! Shurikenjin Dino! (Jurassic fanfare)"

- Shurikenjin Dino combination Shurikenjin Dino (シュリケンジンダイノ) is an alternate form of Shurikenjin formed when Dinomaru takes over Shinobimaru's place with the OtomoNin placed into the formation's right hand, while the giant OtomoNin Shuriken: Dino is placed on the head in place of the OtomoNin Shuriken: Red one. This is performed when AkaNinger spins his OtomoNin Shuriken: Dino in the Ninja Ichibantou and the "Shuriken Dino Combination" is announced.

Shurikenjin Dino is armed with the Dino Drill (ダイノドリル) and the Dino Hammer (ダイノハンマー).

Shurikenjin Dino's finisher is Shurikenjin Dinomic Summer (シュリケンジン・ダイノミックサマー).

Appearances: The Dinosaur Lord's Splendid Ninja Scroll!, Ninnin Girls vs. Boys FINAL WARS

Shurikenjin Paon-UFO-Surfer
Shurikenjin Paon-UFO-Surfer (シュリケンジンパオーン UFO サーファー) is an alternate form of Shurikenjin formed when it is armed with one of Paonmaru’s Paon Axes (パオンアックス) and the UFOmaru Launcher (UFOマルランチャー), while riding on Surfermaru’s surfboard.

This form is exclusive to Episode 42

Shurikenjin Texas
Shurikenjin Texas is an alternate formation of Shurikenjin where Rodeomaru takes the place of Shinobimaru. As of now, this formation is only described in the instructions for the Bison King toy and has not appeared in the show itself or any associated movies or specials.

Nin Shuriken
The original five Ninningers were given these personal OtomoNin Shuriken from their grandfather Yoshitaka Igasaki when Youkai Kamaitachi was enlarged.

Super Sentai Battle Base
Shurikenjin is among the vast pantheon of Mecha which are available in the mobile game Super Sentai Battle Base.

Shuriken Sentai Ninninger: Game de Wasshoi!!
Shurikenjin appears in Shuriken Sentai Ninninger: Game de Wasshoi!! where it is controlled by the player to fight giant Yokai as on the show.