Icon-is.png This article is about a/an villain in Denji Sentai Megaranger.

"Dr. Hinelar. It was I who ordered the attack on the surface. My name is Guirail."
―Guirail's first words[src]
"Damn you!"
―Guirail's final words before his transformation into Mad Guirail[src]

Guirail (ギレール Girēru, 19-32) was an elite Nezirejia warrior who was assigned by Evil Electro-King Javious I to assist Dr. Hinelar in his attempts to conquer the Earth. 


Sadistic and ruthless, Guirail's methods involved tactics that even his allies found reprehensible, such as kidnapping children to use as living shields and performing bizarre experiments on the Nezire Beasts.  Among the powers he possessed included energy blasts, superhuman speed, and a dagger that could extend into a full-length sword.


First appearing during a nighttime raid on the city, Guirail engaged the Megarangers where he used his speed to switch out a Kunekune with Kenta Date (Megared)'s friend Takeshi, resulting in Takeshi taking the punch Kenta had intended for the footsoldier. Later, as Guirail attacked a major communications center, he attempted to manipulate MegaRed's guilt until a message from the recovered Takeshi restored Kenta's will to fight and Guirail retreated after receiving a firm thrashing from MegaRed's new Battle Riser.

With Nezirejia's tactics becoming more aggressive, Prof. Kubota and I.N.E.T. responded with the creation of a secondary mech, the Delta Mega, to backup Galaxy Mega. Guirail himself responded by enhancing Crocodile Nezire with the power to split into two upon receiving a fatal blow and sent him to deal with the Megarangers while he went after Delta Mega's chief programmer, attempting to force the scientist to surrender Delta Mega's command program by taking his son hostage. Again, Guirail was thwarted by MegaRed who was then able to activate Delta Mega to help the others deal with the dual Nezire Beasts.

Becoming Giga Guirail

Guirail as Giga Guirail

After repeated failures, Guirail and the others found themselves facing an enraged Javious who promised dire consequences if they didn't defeat the Megarangers soon. Knowing that his life was on the line as well, Guirail convinced Yugande to join forces and the two attacked a mining facility.  But as soon as the Megarangers appeared to fight them, Guirail attacked Yugande from behind, weakening him enough for Guirail to merge with him into a composite form called Giga Guirail. By combining Yugande's strength with his cunning, Giga Guirail froze MegaBlack, Yellow, and Pink in crystal blocks; then dealt a head injury to MegaBlue that afflicted Shun with amnesia. After broadcasting a challenge over the city, Giga Guirail faced MegaRed and easily dominated him until Shun arrived to help and, after regaining his memory, worked with MegaRed to split Giga Guirail back into two beings. Refusing to accept surrender, Guirail combined with Yugande once again and grew giant, but was ultimately overwhelmed by the Megarangers' teamwork and separated just in time to use Yugande as a shield against Super Galaxy Mega's Super Galaxy Knuckle attack. 

Unbeknownst to Guirail, a furious Dr. Hinelar witnessed the entire predicament and planned to enact fitting retribution upon him.

Becoming Mad Guirail & Death

Following his failure as Giga Guirail, Guirail was given the experimental NeziGen Capsule by Dr. Hinelar, which had originally been intended for the now-damaged Yugande, much to Shibolena's outrage. After luring out the Megarangers, Guirail swallowed the capsule and with its power surging through him easily bested all five Megarangers at once.  Before he could deliver the killing blow, however, Guirail's body began to mutate and he was forced to retreat. Confronted by Dr. Hinelar and Shibolena, Guirail was informed that although the NeziGen Capsule would increase his strength to unparalleled levels, the side effects would destroy his mind and warp his body. The two then abandoned Guirail as he transformed into a gigantic, mindless form called Mad Guirail (マッドギレール Maddo Girēru) and began to rage across the city. Although the Megarangers attempted to stop him in Super Galaxy Mega, Mad Guirail's power and mindless fury proved too much for them to handle while even their new finisher, the Big Bang Attack, failed to inflict any significant damage. As Guirail's mutation resulted in him spawning the Nezi Beast Gigire from a piece of his own body, the Megarangers were forced to retreat in Delta Mega to the I.N.E.T. moonbase with Gigire in hot pursuit, leaving Mad Guirail to continue his assault on the now crippled Galaxy Mega. As Mad Guirail prepared to finish his opponent off, the Megarangers returned in time to save Prof. Kubota and the others with their latest weapon, the Mega Voyager. Against the Megarangers' newest and most powerful mecha, Guirail had finally met his match and ultimately became the first opponent killed by Mega Voyager's Voyager Spartan attack.


Despite falling in battle, Guirail would continue to haunt the Megarangers even in death as Dr. Hinelar recovered the remains of Mad Guirail and used them to create a new breed of warrior for Nezirejia, the Psycho-Nezilar.


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Powers and Abilities


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Nezire Beasts Created


Main article: Gigire


During Mad Guirail's fight against Super Galaxy Mega, the power within him became too much for one body to hold, resulting in a piece of him breaking off and transforming into the Nezi Beast Gigire (ギギレ Gigire).  As the two double-teamed Super Galaxy Mega, the Megarangers were forced to retreat to I.N.E.T.'s moonbase in Delta Mega, only to find that Gigire was flying after them.  After using Delta Mega's thrusters to blast him away, the Megarangers faced Gigire again after obtaining the Voyager Machines from Yuusaku Hayakawa and managed to destroy him with Rovoyager-1 and Rocket Voyager-3's Voyager Double Attack before combining into Mega Voyager to fight Mad Guirail.

Behind the Scenes


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  • Guirail was designed by character designer Miharu Shimojo.
  • His appearance is based on bandages.

Concept Art


  • Guirail's name comes from the Japanese word "kireru" (切れる), which means to cut.


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See Also


Icon-is.png Denji Sentai Megaranger
Kenta Date - Kouichirou Endou - Shun Namiki - Chisato Jougasaki - Miku Imamura - Yuusaku Hayakawa
Degitaizer - Keitaizer - Mega Sniper - Drill Saber - Multi Attack Rifle (MegaRod - MegaTomahawk - MegaSling - MegaCapture) - Silver Blazer - Battleraizer - Cyber Sliders - Digitank - Auto Slider
Professor Eikichi Kubota - Shougo Kawasaki - Pop - Gen Ooiwa - Shintarou Wada - Jirou Iwamoto - Erina - Carrangers - Gingamen - Gokaigers - Picoto
Mecha and Robos
MegaShip - Mega Shuttle - Delta Mega - Rovoyager-1 - Shuttle Voyager-2 - Rocket Voyager-3 - Saucer Voyager-4 - Tank Voyager-5 - Mega Winger
Galaxy Mega - Delta Mega - Super Galaxy Mega - Mega Voyager - Mega Winger Fighter Mode - Wing Mega Voyager
Wicked Electric Kingdom Nezirejia
Evil Electro-King Javious I - Dr. Hinelar - Shibolena - Bibidebi - Yugande - Guirail
Nezire Beasts: Stingray Nezire - Rhino Nezire - Chameleon Nezire - Shrimp Nezire - Elephant Nezire - Bee Nezire - Bat Nezire - Neo-Bat Nezire - Rose Nezire - Mole Nezire - Owl Nezire - Poison Moth Nezire - Toad Nezire - Mushroom Nezire - Scorpion Nezire - Crocodile Nezire - Centipede Nezire - Antlion Nezire - Anglerfish Nezire - Komutan - Buffalo Nezire - Moray Nezire - Cicada Nezire - Coral Nezire - Termite Nezire - Pig Nezire
PsychoNezilar: Lion Nezilar - Porcupine Nezilar - Mantis Nezilar - Condor Nezilar - Canary Nezilar - Lizard Nezilar - Crab Nezilar - Thorn-Needle Nezilar - Illusion Nezilar - Transport Nezilar - Hell Nezilar
Jaden Sentai Neziranger - NeziRed - NeziBlack - NeziBlue - NeziYellow - NeziPink - NeziSilver
Soldiers Kunekune (Boss Kunekune - King Kunekune) - Nezi Crusher - Ultimate Lifeform - Gigire - Helmedor - Grand Neziros