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Ultra Galaxy Legend Gaiden: Ultraman Zero vs. Darklops Zero (ウルトラ銀河伝説外伝 ウルトラマンゼロ VS ダークロプスゼロ Urutora Ginga Densetsu Gaiden: Urutoraman Zero VS Dākuropusu Zero) is a Japanese direct-to-video two part series that was made as a prequel to Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire.


Stage 1: Cosmic Collision

Zero sits on a cliff while he watches a strange tower firing lightning bolts, and then rises to face against what seemed to be members of the Ultra Brothers: Ultraman, Zoffy, Ultraman Jack and Ultraman Ace. After incapacitating the ZAP SPACY's Space Pendragon, Ultraseven joined the group as they faced against Zero.

Meanwhile, Rei and Hyuga sensed a distress signal from a nearby ZAP SPACY base. They dispatched on the Space Pendragon and track the signal's source from a recent space distortion, which successfully dragged their ship into it. After awakened, they find themselves within a subspace linked to multiple distortions. The distress signal from before triggers again but the source is revealed to be from another Space Pendragon within a strange planet. As they explore it, they spotted Ultraman Zero and several other Ultra Warriors while being chased by two mysterious objects before the Pendragon crash-landed. The two set on foot and track the source of the signal, which was revealed to be from a wrecked Space Pendragon and found an injured Kumano, as well as another Hyuga, revealing them to be the source of the signal. As Kumano disappears, the second Hyuga revealed that since the past two weeks, time distortions begin to appear out of nowhere. The alternate ZAP SPACY arrives on a planet and fights alongside Ultraman Zero but has reached their limit.

After witnessing on what appears to be corpses of Ultraman Jack and Zoffy, the alternate Hyuga reveals that a strange force that resided in the factory they saw performs an experiment which causes multiple distortions to different universes appear. The alternate ZAP SPACY (Haruna and Oki included) slowly disappears due to their existence being abnormal, as the planet they stepped on becomes one that doesn't belong to any plane of existence. The facility produces nigh-unlimited supplies of fake Ultra Brothers, with their opponent Zero shall met his limit in any moment. In his final breath, the alternate Hyuga orders the prime ZAP SPACY to combine forces with Zero, destroying the facility and save the multiverse before disappearing.

Not long after, several warheads target Rei and Hyuga until Gomora shields them. The perpetrator reveals itself as a robotic copy of the same monster and managed to defeat the original Gomora. The perpetrator watches as she revealed that the robotic Gomora is built based on the original template, making it twice powerful than the original. Before the robot can finish off its template, Zero appeared and switch places with an injured Gomora to fight the fiend, giving Rei an opportunity to attack the alien factory with Litra. Seeing how Zero being able to defeat the mechanical Gomora, the alien leader Herodia sent the experimental robot equipped with their Tector Gear.

Before Zero can finish the robotic monster, he was interrupted by a strange mechanical figure and prompts to fight it. Rei tries to attack the alien factory but was shielded by a barrier and caught in an attack by the battle-damaged mechanical Gomora. Hyuga tries to help but gets caught in a crossfire between Zero and the Tector Gear warrior. The mechanical warrior destroys his Tector Gear by his own will and reveal himself as Darklops Zero and defeated his original template. Reinforcements arrived in the form of mechanical copies of Ultraman, Seven and Ace while Darklops banishes Zero and the impostor Ultra Brothers to a different subspace.

Stage 2: Zero's Suicide Zone

Zero's Zero Twin Sword drifted in outer space after his defeat by Darklops Zero until it was claimed by Ultraman Leo.

Meanwhile, Zero finds himself trapped within a universal gap and faced against an impostor Ace. Following the battle, Darklops Zero was restrained once more by Herodia, remembering a figure named "Kaiser Belial" before deactivating. Rei was restrained after his failed attempt to intrude the alien base but was rescued by none other than his alternate self. Unlike the prime Rei, alternate Reimon was never able to control his powers, forced into the state of Reionic Burst until the original Rei punched Reimon, thus deactivating its Reionic Burst mode. Rei revealed that he lost his Rayblood instinct after Hyuga threw Seven's Eye Slugger, creating a scar on his chest which symbolizes the former's friendship with ZAP SPACY members. While searching for Rei, Hyuga instead finds his Neo Battlenizer and an entrance to the alien base made by Litra. Although the fake Ace was destroyed, Zero try to find an escaped but was halted by Seven and Ultraman impostors.

Arriving at the launch facility, Rei and alternate Reimon discover an army of mass-produced Ultra Brothers and met Herodia, the Alien Salome that also stole Reimon's Battlenizer to create Mecha Gomora. Despite being unstable, but Darklops Zero's Dimension Core is successfully held in the Alien Salome's control, allowing them to sent an army of fake Ultra Brothers to various universes. With Zero at his limits, Leo arrives to his aid while reminding his student of the harsh training he previously faced. Hyuga appears and gives Rei the Neo Battlenizer, summoning Gomora to stop the Salome's plans while a repaired Mecha Gomora was sent to fight the Battlenizer monster as well. Herodia tries to get her servants to work but was captured by Darklops Zero while her servants died from their base's rubble.

Darklops Zero proceeds to destroy the entire factory and reprimand his captor of how living organisms being selfish before she fell from a great height. In order to escape the universal gap, Leo told his student to re-enact his and Astra's Ultra Double Flasher, which they succeeded and at the same time destroying the fake Ultraman and Seven. In her final breath, Herodia revealed to Hyuga that Darklops Zero was a creation of unknown force, as they only salvaged the robot when it was shown floating in outer space.

Darklops Zero marches towards the Gomoras' conflict, and successfully reprograms the rogue Mecha Gomora to his servitude as they overpower the original Gomora until Zero arrives. Seeing how Mecha Gomora being a product of his Battlenizer, alternate Reimon proceed to help Rei controlling his Gomora while Zero arrives just in time to assist the monster against their doppelgängers. After Mecha Gomora's destruction, the alternate Reimon begins to disappear but because of their combined control of Gomora, memories of the original Rei was transferred to the alternate counterpart. This allows him to finally be free from Rayblood's instincts, thanking his prime counterpart before vanishing. With Darklops Zero at the verge of defeat, he reminds his counterpart that the actual threat shall appear from his own home world and prepares to self-destruct. Rei, Hyuga, and Zero tries to escape as Planet Cheney and the entire subspace caught in a huge explosion.

After awakened, Rei and Hyuga found that they returned to their original universe and received a message from their original counterpart, having revived after Darklops Zero's destruction. As the Space Pendragon left, Zero saw them from behind and join his master.








  • Rei (レイ Rei)/Alternate Rei (代替 レイ Daitai Rei): Shota Minami (南 翔太 Minami Shota)
  • Hyuga (ヒュウガ Hyuga)/Alternate Hyuga (代替 ヒュウガ Daitai Hyuga): Konishi Hiroyuki (小西 博之 Konishi Hiroyuki)
  • Alternate Kumano (代替 クマノ Daitai Kumano): Mitsutoshi Shundo (俊藤 光利 Shundo Mitsutoshi)
  • Alien Salome "Herodia" (サロメ 星人 ヘロディア Sarome Seijin Herodia): Tomomi Miyashita (宮下 ともみ Miyashita Tomomi)
  • Alien Salome "Irate" (サロメ 星人 イラテ Sarome Seijin Irate): Daisuke Terai (寺井 大介 Terai Daisuke)
  • Alien Salome "Ganaesu" (サロメ 星人 ガナエス Sarome Seijin Ganaesu): Hiroshi Suenaga (末永 博志 Suenaga Hiroshi)

Voice Cast


Showa Series Ultra Q | Ultraman | Ultraseven | Return of Ultraman | Ultraman Ace | Ultraman Taro | Ultraman Leo | Ultraman 80
Heisei Series Ultraman Tiga | Ultraman Dyna | Ultraman Gaia | Ultraman Cosmos | Ultra Q: Dark Fantasy | Ultraman Nexus | Ultraman Max | Ultraman Mebius | Ultraseven X | Ultra Galaxy Mega Monster Battle | Ultra Galaxy Mega Monster Battle: Never Ending Odyssey | Neo Ultra Q | Ultraman Ginga | Ultraman Ginga S | Ultraman X | Ultraman Orb | Ultraman Geed | Ultraman R/B
Reiwa Series Ultraman Taiga | Ultraman Z | Ultraman Trigger: New Generation Tiga | Ultraman Decker
Outside of Japan Ultraman: The Adventure Begins | Ultraman: Towards the Future | Ultraman: The Ultimate Hero | Ultraman (Netflix film)
Original Video and TV Special Ultra Fight | Ultraman vs. Kamen Rider | Ultra Super Fight | Ultraman Nice | Heisei Ultraseven | Ultraman Neos | Ultraman: Super Fighter Legend | Ultra Idemitsujin | Ultra Zone
Showa Movies Ultraman: Monster Movie Feature | Ultraman, Ultraseven: Great Violent Monster Fight | The 6 Ultra Brothers vs. The Monster Army | Ultraman (1979) | Ultraman: Great Monster Decisive Battle | Ultraman ZOFFY: Ultra Warriors vs. the Giant Monster Army | Ultraman Story
Heisei Movies Ultra Q The Movie | Revive! Ultraman | Ultraman Zearth | Ultraman Zearth 2 | Ultraman Tiga & Ultraman Dyna | Ultraman Tiga, Ultraman Dyna, & Ultraman Gaia | Ultraman Tiga: The Final Odyssey | Ultraman Cosmos: The First Contact | Ultraman Cosmos 2 | Ultraman Cosmos vs. Ultraman Justice | ULTRAMAN (2004) | Ultraman Mebius & the Ultra Brothers | Super 8 Ultra Brothers | Ultra Galaxy Legends The Movie | Ultraman Zero The Movie | Ultraman Saga | Ultraman Ginga Theater Special | Ultraman Ginga Theater Special: Battle Royale | Ultraman Ginga S The Movie | Ultraman X The Movie | Ultraman Orb The Movie | Ultraman Geed The Movie | Ultraman R/B The Movie
Reiwa Movies Ultraman Taiga The Movie | Ultraman Trigger: Episode Z | Shin Ultraman
Spin-Offs Andro Melos | Ultraman Tiga Gaiden: Revival of the Ancient Giant | Ultraman Dyna: The Return of Hanejiro | Ultraman Gaia: Gaia Again | Ultraman Mebius Gaiden: Hikari Saga | Ultraman Mebius Gaiden: Armored Darkness | Ultraman Mebius Gaiden: Ghost Rebirth | Ultra Galaxy Legend Gaiden: Ultraman Zero vs. Darklops Zero | Ultraman Zero Gaiden: Killer the Beatstar | Ultra Zero Fight | Ultra Fight Victory | Ultraman Orb THE ORIGIN SAGA | Ultra Fight Orb | Ultra Galaxy Fight: New Generation Heroes | Ultra Galaxy Fight: The Absolute Conspiracy | Sevenger Fight | Ultra Galaxy Fight: The Destined Crossroad | Shin Ultra Fight
Rebroadcast Shows Ultraman Retsuden | New Ultraman Retsuden | Ultraman Zero: The Chronicle | Ultraman Orb: The Chronicle | Ultraman New Generation Chronicle | Ultraman Chronicle: ZERO & GEED | Ultraman Chronicle Z: Heroes' Odyssey | Ultraman Chronicle D
Other Series Kaiju Booska | Captain Ultra | Mighty Jack | Fight! Mighty Jack | Operation: Mystery | Chibira-kun | Mirrorman | Redman | Triple Fighter | Emergency Directive 10-4·10-10 | Iron King | Fireman | Jumborg Ace | Mirror Fight | Army of the Apes | Pro-Wres no Hoshi Azteckaiser | Dinosaur Expedition Born Free | Dinosaur Great War Izenborg | Dinosaur Squadron Koseidon | Gridman the Hyper Agent | Superhuman Samurai Syber-Squad | Booska! Booska!! | Mirrorman REFLEX | Bio Planet WoO | Mirror Fight 2012 | Ultraman The Prime | Ultra Science Fantasy Hour | Gridknight Fight
Anime The☆Ultraman | Ultraman Kids | Ultraman Graffiti: Wild! Ultra Country | Ultraman: Super Fighter Legend | Ultra Nyan | Gridman the Hyper Agent: boys invent great hero | The・Ultraman: Jackal vs. Ultraman | Kaiju Sakaba Kanpai! | Kaiju Girls | SSSS.GRIDMAN | ULTRAMAN (2019) | Kaiju Step Wandabada | SSSS.DYNAZENON | KAIJU DECODE | GRIDMAN×DYNAZENON
Outlaw Content Space Warriors 2000 | Project Ultraman | Ultraman The Animation | Ultraman: A Little Journey on Earth | Fun... English with Ultraman | Young Ultraman | Ultraman Big Transformation | Sinic Q | Red Jade | Dragon Force: So Long Ultraman | Dragon Force: Rise of Ultraman