Chapter Summaries

Keigo Masaki transformed into Evil Tiga and battled Tiga, but Zero and Cosmos appeared and helped defeat him. Duke Zetton then discovered he had crossed into Ultraman Tiga’s world, while Daigo was questioned at TPC about the unfamiliar Ultramen.

• Keigo Masaki used the Giant Stone Statue to become Evil Tiga and wreaked havoc in Kumamoto City.
• Tiga fought Evil Tiga, and their beams opened a passage that brought Ultraman Zero, Ultraman Cosmos, and Duke Zetton into the city.
• Duke Zetton disguised himself as an ordinary person and watched from the crowd as Tiga, Cosmos, and Zero blasted Evil Tiga out of his giant form.
• Tiga, Cosmos, and Zero flew away together, leaving Keigo Masaki behind in the ruins.
• At TPC, Captain Megumi Iruma questioned Daigo about the two unfamiliar Ultramen, but he told her he did not know them.

Daigo met Ultraman Zero and Ultraman Cosmos in human form and learned that they had arrived in his universe while pursuing a dangerous mutant Zetton. He agreed to help them deal with Zetton and let them stay at his home while they sought a way to return.

• Daigo wandered into a park after work, where Zero and Cosmos approached him and explained that they were Ultra Warriors from the Land of Light.
• Cosmos realized they were in a Parallel Universe, and Daigo introduced himself as a GUTS member chosen by Tiga's light.
• At Daigo's home, Cosmos explained that mutant Zetton had overwhelmed him, Zero, and Dyna, forcing Dyna to open a wormhole that brought them to Earth.
• Cosmos warned Daigo that Zetton preyed on Ultramen psychologically and urged him to contact them before transforming.
• Cosmos and Zero discussed capturing Zetton or driving it away, and they planned to use Daigo's GUTS position and secret identity to stay ahead of it.
• Zero and Cosmos asked to stay with Daigo because they were unregistered residents, and Daigo agreed.

Duke sought a job in TPC so he could stir up trouble in the Ultraman Tiga world without drawing the Ultramen’s attention. He used his powers to convince Director Sawai to hire him, and left with credentials to join GUTS as an ordinary team member.

• Duke reviewed the Ultraman Tiga story with Dead Fish Eye Duke and decided to find a suitable identity for his plans.
• Director Sawai worried that TPC’s growing military power and Project F would undermine its commitment to peace.
• Duke entered Director Sawai’s car, ignored a toy-gun shot to his forehead, and introduced himself as a job seeker.
• Duke used his power to make Director Sawai believe he was a talented Major from TPC’s United States branch and promised to help maintain world peace.
• Director Sawai offered Duke a senior GUTS role, but Duke asked to start as an ordinary team member and received credentials to report to headquarters.

GUTS welcomed Duke, whose friendliness quickly won over the team, while Daigo struggled with exhaustion and his growing worries about Zetton. At home, Daigo found Cosmos and Zero gaming and was forced to play as a monster against Zero’s Tiga, which he repeatedly beat to death.

• Nodoka showed GUTS Duke’s impressive but partly encrypted personnel file as the team wondered about their new member.
• Megumi Iruma introduced Duke to GUTS and assigned Daigo to help him settle in.
• Duke enthusiastically questioned Daigo throughout the day, leaving Daigo exhausted and unnerved.
• Daigo returned to his cramped apartment, where Cosmos and Zero were playing a game based on Tiga’s battles against monsters.
• Zero handed Daigo a controller, and Daigo repeatedly defeated Tiga while playing as a monster, even when he tried to lose.

Daigo tried to explain his troubles to Cosmos, but Rena arrived and misread the scene after finding Cosmos and Zero in his home. The next day, Daigo followed Rena to work while Duke visited the imprisoned Keigo Masaki to take over his case and knowledge.

• After losing ninety-nine fighting-game matches, Zero blamed Tiga, and Cosmos told him to wash up before playing Daigo himself.
• Daigo told Cosmos he felt unsure whether he was human or an Ultraman and whether he deserved Tiga's power, but Rena interrupted them at the door.
• Daigo tried to keep Rena from entering, but she forced her way inside, saw Cosmos and a towel-clad Zero, and fled after assuming Daigo was hiding a romantic relationship with them.
• Daigo arrived at work exhausted and tried to explain himself to Rena, who ignored him; he then joined Rena and Shinjoh on a mission to investigate a suspected alien UFO.
• Duke visited Keigo Masaki in TPC's underground prison and announced that he would take over the case to obtain Masaki's knowledge.

Duke brainwashed Keigo Masaki into joining an expedition to the Super Ancient ruins of R'lyeh, while Daigo and GUTS discovered that Kijiera pollen had plunged humanity into dreams. Duke appeared unaffected by the pollen, though Daigo suspected he was merely the most deeply intoxicated of all.

• Duke confronted Keigo Masaki, revealed a glimpse of his monstrous form, and used blue light to make him pledge loyalty to the Organization.
• Duke told Keigo Masaki to join a mission to R'lyeh, where Dr. Tango and a team were already headed.
• Daigo and the others returned to TPC Headquarters with Kijiera flowers, and Daigo recognized them as a cause of the Super Ancient Civilization's fall.
• Kijiera pollen spread worldwide, trapping people in blissful dreams and throwing TPC Headquarters into chaos.
• Duke filmed Captain Megumi Iruma pretending to fly and Rena embracing Daigo, then claimed he had no dreams because he was everyone's ideal.

Daigo took Ultraman Cosmos’s advice, transformed into Ultraman Tiga, and joined Ultraman Zero and Cosmos to defeat Kijiera and end its hold over humanity. Seven days later, Duke departed on a secret mission to the Super Ancient Civilization ruins in the South Pacific.

• Daigo struggled with humanity’s dependence on Kijiera until Ultraman Cosmos reminded him that he was both human and Ultraman and should follow his heart.
• Daigo transformed into Ultraman Tiga and attacked Kijiera, but the plant’s tentacles overwhelmed him until Ultraman Zero and Ultraman Cosmos rescued him.
• Ultraman Tiga, Ultraman Cosmos, and Ultraman Zero fought together, and Zero severed Kijiera’s flower bud to defeat it.
• Duke treated his GUTS colleagues to dinner and karaoke, where he played footage of Rena’s confession and helped Daigo’s romance with her.
• Daigo promised Duke he would help him if needed, while celebrating his success and the fact that the GUTS Wing had survived the battle.
• Seven days later, Duke left TPC Headquarters aboard a warship for a secret mission at the Super Ancient Civilization ruins in the South Pacific.

Duke led TPC’s second wave into the R'lyeh Ruins to excavate its ancient statues without waking Gatanothor. When Camilla, Hitler, and Darram revived and attacked him, Duke transformed into Zetton, defeated two of them, and considered recruiting the trio as allies.

• Duke entered the R'lyeh Ruins with TPC’s second wave and ordered the engineers to excavate quietly while avoiding the pyramid where Gatanothor slept.
• Duke found the preserved statues of Camilla, Hitler, and Darram, but the three Dark Giants revived before he could keep them asleep.
• Duke transformed into seventy-meter-tall Zetton as the Dark Giants attacked him.
• Duke used Teleportation to knock Hitler down, then broke Darram’s leg with a powerful punch.
• Duke turned to Camilla and asked whether she wanted to live or die, while considering using the three Dark Giants as allies.

Duke defeated Camilla, Hitler, and Darram, then forced Hitler and Darram to surrender while Camilla remained stubbornly silent. After suppressing the darkness leaking from Gatanothor’s sealed pyramid, Duke turned to the subject of Ultraman Tiga and provoked a sharp reaction from all three Dark Giants.

• Camilla attacked Duke, but he dodged her strikes, knocked her down, and defeated Hitler and Darram with stone pillars.
• Duke made the three Dark Giants kneel while he considered whether to kill them, and Camilla refused to beg for mercy.
• Dark energy began flowing into Camilla as Gatanothor’s scarlet eyes appeared in the pyramid, but Duke’s aura forced the black mist back inside.
• Darram tried to attack Duke during the clash, then used Hitler’s bathroom excuse to explain himself before Duke kicked him away.
• Duke asked the three Dark Giants to surrender; Hitler and Darram agreed, while Camilla stayed silent.
• Duke brought up Ultraman Tiga, and Camilla, Hitler, and Darram reacted with hostility.

Duke returned to TPC after preparing six Spark Lenses and repaired stone statues for his plan against Ultraman Tiga. He gave Megumi Iruma a Spark Lens and asked whether she wanted to become light, leaving her holding it in a daze.

• Ultraman Zero grew frustrated after losing to Ultraman Tiga and Ultraman Cosmos in a fighting game, then focused on defeating minor monsters while Daigo enjoyed an easier life.
• Duke used his influence to secure a factory near R'lyeh, where Keigo Masaki oversaw repairs to six stone statues and prepared six Spark Lenses.
• Camilla questioned Duke's plan to use the weak statues and Spark Lenses against Ultraman Tiga, while Duke explained his belief that heroes drew strength from what they cherished.
• Duke left Keigo Masaki in charge of the base and took Camilla, Hitler, and Darram with him to Japan for a chance at revenge against Ultraman Tiga.
• Duke returned to GUTS, showed Megumi Iruma embarrassing old footage, then gave her a Spark Lens and asked if she wanted to become light.

Megumi Iruma and several GUTS members secretly wondered if they could become light, while Duke’s teasing nearly interrupted Daigo and Rena’s growing closeness. When Fire Golza appeared near Tokyo, GUTS scrambled to intercept it, leaving the team members privately fretting over whether they would crash.

• Megumi Iruma recovered from a daze while holding the Spark Lens and sent Duke to report his classified mission to Director Sawai.
• Duke gave Rena and other GUTS members mysterious gifts, leaving them distracted and wondering if they could become light.
• Daigo reassured Rena that she could become light, but Duke interrupted just as they were about to kiss.
• The next day, Nodoka reported an earthquake outside Tokyo, and Fire Golza burst from the ground.
• Megumi Iruma ordered GUTS to intercept Golza, assigned Nodoka to remain at headquarters, and joined the battle herself.

GUTS Wing 1 and GUTS Wing 2 failed to damage Fire Golza, and Daigo struggled to transform while his crewmates tried to crash their planes. When two more Fire Golzas appeared, Megumi Iruma and the rest of GUTS transformed, leaving seven Ultramen to face the monsters.

• GUTS Wing 1 and GUTS Wing 2 attacked Fire Golza with a Texas Beam, but it took no damage.
• Daigo and the other GUTS members tried and failed to crash their aircraft until Ultraman Zero and Ultraman Cosmos caught them and joined the fight.
• Two more Fire Golzas emerged, while Daigo and his teammates made excuses to leave Megumi Iruma alone.
• Megumi Iruma transformed into a female Ultraman, and five more unfamiliar Ultramen appeared beside Ultraman Zero and Ultraman Cosmos.
• At TPC Headquarters, Nodoka wondered why Ultraman Tiga had not appeared, and Duke joked that he might have run into an ex-girlfriend.

Daigo was ambushed by Camilla, Hitler, and Darram, who stole his Spark Lens and tempted him with a Black Spark Lens, but he rejected their offer. After the seven Ultramen defeated the Golzas, Camilla’s group escaped through a Space Portal, leaving Daigo troubled by her warning, while the GUTS members realized they could all transform.

• Zero and Cosmos joined the five newly arrived GUTS Ultramen to attack the Three-Headed Fire Golza.
• Camilla, Hitler, and Darram ambushed Daigo, took his Spark Lens, and offered him a Black Spark Lens to draw him back to darkness.
• Daigo grasped the Black Spark Lens but rejected Camilla’s offer and reaffirmed his choice to remain on the side of light.
• The seven Ultramen defeated the Golzas with a combined beam barrage, and Camilla’s group escaped through a Space Portal after warning Daigo that everything was within someone’s calculations.
• Daigo returned to GUTS, where the members realized they had all transformed and joked about their shared secret.

GUTS revealed that its members were Ultramen and learned that the Dark Giants planned to eliminate them before the Dark Jashin awakened. At headquarters, Duke claimed he had once been a Giant of Light but had lost his transforming power, and Megumi Iruma asked him whether his Spark Lens could be restored.

• Megumi Iruma told GUTS that Daigo was Ultraman Tiga, and Daigo found out the team members had revealed their own identities.
• Daigo explained that Camilla and the other Dark Giants, along with Tiga, had once been Dark Giants, and warned that the Dark Jashin was nearing its awakening.
• Megumi Iruma identified Nodoka as the sixth Ultraman, then ordered GUTS to return to headquarters after their aircraft had crashed and their energy was depleted.
• Duke produced a stone Spark Lens and claimed that he had once transformed into a Giant of Light but had lost that ability after dying in battle against a sea monster.
• Megumi Iruma concluded that the Dark Giants were targeting GUTS members one by one and asked Duke if he could restore his Spark Lens.

Daigo learned that the Land of Light would send help, but Cosmos and Zero could not restore Duke’s ability to transform. As ancient ruins rose from the sea near New Zealand, Daigo recognized the return of the darkness.

• Daigo told Megumi Iruma and Duke that Cosmos and Zero might know how to restore Duke’s powers, and warned GUTS that the enemy could target them individually.
• Cosmos and Zero recounted meeting the First Hokage Ultraman after pursuing Charybdis through time, and said the Land of Light would send warriors to Earth.
• Cosmos and Zero examined the black Spark Lens but could not help Duke, whose transformation ability remained lost.
• GUTS fought several monsters while its aircraft were repeatedly damaged, until the GUTS Wing was scrapped and the team ran out of planes.
• A blue barrier beneath New Zealand shattered, and an island bearing the ruins of a Super Ancient Civilization rose from the sea.
• Daigo recognized the emerging ruins and realized that darkness had descended.

Daigo and Duke witnessed Gatanothor unleash darkness across the world and attack TPC Headquarters. Duke stayed behind to hold off the black mist, leaving Daigo to escape and transform as he vowed to save the world.

• Daigo and Duke spotted Gatanothor in the South Pacific, and the giant bird monsters it unleashed spread darkness and destroyed TPC fighter jets around the globe.
• Gatanothor's black mist paralyzed TPC Headquarters and devoured staff, prompting Director Sawai to order an evacuation.
• Daigo and Duke tried to rescue fleeing staff members, but their weapons barely slowed the black mist.
• Duke stayed behind to lower the blast gate and cover Daigo's escape, then was swallowed by the darkness.
• Daigo wept for Duke, promised not to let him down, and raised his black Spark Lens to transform.

GUTS's six Ultraman struggled against Gatanothor until Ultraman Zero and Ultraman Cosmos arrived and began to overpower it. As GUTS fought off the Zoigers, Daigo arrived as Dark Tiga and saw Rena under attack.

• Gatanothor used its Dark Energy to weaken GUTS's six Ultraman and gained the upper hand against them.
• Ultraman Zero and Ultraman Cosmos arrived, and Cosmos blocked Gatanothor's claw while Zero cut its tentacles and struck its face.
• Cosmos created six clones to distract Gatanothor while Zero prepared to deliver the finishing blow.
• Gatanothor recalled the Zoigers, leaving GUTS's Ultraman struggling to hold them off.
• Daigo arrived as Dark Tiga, spotted Rena being pummeled by the Zoigers, and recognized her among the female Ultraman.

Dark Tiga, Ultraman Zero, and Ultraman Cosmos fought Gatanothor in its Dark Domain while Duke watched with Camilla and two others. As the battle escalated into a clash of beams, Duke appeared beneath Gatanothor and prepared to attack from below.

• Dark Tiga slaughtered the Zoigers, then joined Ultraman Zero and Ultraman Cosmos against Gatanothor.
• Dark Tiga hammered Gatanothor at close range, but his Dark Zeperion Ray failed to damage it, while the dark mist strengthened him and drained the other Ultramen.
• Duke brought Camilla and two others through a Space Portal to watch the battle, and Gatanothor spotted them and redirected its attacks toward Duke.
• Duke teleported away from Gatanothor’s Penetrating Ray, and Dark Tiga mistook his appearance for an illusion caused by grief over Duke’s supposed death.
• Dark Tiga’s beam gained golden light as Ultraman Zero and Ultraman Cosmos joined him in a beam clash against Gatanothor.
• Duke appeared beneath Gatanothor and silently severed a thick pillar among its tentacles.

Dark Tiga, Ultraman Zero, and Ultraman Cosmos defeated Gatanothor, but Camilla, Darram, and Hitler appeared before they could recover. As Hitler attacked Daigo and GUTS, Leo, Seven, Ultraman, and Zoffy arrived from the Land of Light.

• Gatanothor’s beam faltered after it was injured beneath its shell, allowing Dark Tiga, Ultraman Zero, and Ultraman Cosmos to destroy it.
• Dark clouds gathered over the R'lyeh Ruins, and Camilla, Darram, and Hitler emerged as the three heroes lost their transformations.
• Camilla urged Daigo to join them, but he refused, and Hitler transformed and attacked him and the others.
• Hitler turned on GUTS after its members fired at him, raising his foot to crush them.
• Leo struck Hitler before he could stomp on GUTS, and Seven, Ultraman, and Zoffy arrived as reinforcements.

The Ultra Warriors initially overwhelmed Camilla's Dark Triad, but Duke revealed himself as Zetton and activated six Dark Giants from GUTS, turning the battle against them. Duke left Cosmos and Ultraman Zero beaten while Daigo struggled to accept the betrayal.

• Camilla and Darram transformed and fought the four Ultra Warriors, who quickly gained the advantage over the Dark Triad.
• Duke appeared alive among GUTS, and Cosmos identified him as Zetton, but Daigo refused to believe it until Duke admitted he was a mole.
• Duke revealed that he had made GUTS's Spark Lenses, and six GUTS members transformed into Dark Giants who restored the Dark Domain and overwhelmed the Ultra Warriors.
• Ultraman Zero and Cosmos charged Duke, but Duke defeated them with a series of cheat-like moves while Daigo hesitated to intervene.
• Camilla attacked Rena's Dark Giant with her whip, and the two women began fighting.