History Characters / UltramanDecker

* MirrorCharacter: Episode 15 establishes him as this to [[Series/UltramanTriggerNewGenerationTiga Ignis]], while at the same time acting as his EvilCounterpart. Both are HumanAliens who lost their home planet to an alien invasion, or in Ignis's case, by a certain genocidal Dark Giant and even witnessed their loved ones dying in front of them which heavily traumatized them. Ignis would embark on a vendetta quest against Hudram while finding a means to defeat him, by becoming Trigger Dark later on, and remains as the Dark Giant's host to help Kengo and GUTS-Select in their final bout against Megalothor. Agams' home planet of Bazdo were overwhelmed by the Spheres despite that his people are still fighting back against them, he develops great resentment towards Earth, humanity, and the light of Decker for bringing the Spheres to them. Agams wanted nothing but to let the Spheres devour the Earth and will stop at nothing to remove Ultraman Decker out of the equation to achieve that end goal. Finally, both redeem themselves once they are convinced well enough and even help stop the main threat, but while Ignis lives after giving his power to Kengo to transform into Trigger's true final form: Trigger Truth; Agams is killed by Mother Spheresaurus, bidding farewell to Kanata and hoping he can make things right.

* BackToBaseForm: [[spoiler:The finale has him start out in his Dynamic Type, but for the final hit he uses his Flash Type and achieves a [[GoldenSuperpoweredMode Glitter Form]] through it.]]

** Like Series/UltramanTiga [[spoiler:he gains a GoldenSuperpoweredMode in the finale after a DisneyDeath and once his purpose is done his power leaves his host behind now that the world is at peace.]]

* GoldenSuperpoweredMode: [[spoiler:Gains a Glitter form in the finale as his final transformation and move against Mother Spheresaurus.]]

* ButNowIMustGo: [[spoiler:After Mother Spheresaurus' defeat, Decker leaves the present timeline and goes back to his own time period with his original host, Decker, with Kanata bidding him farewell.]]

* NotSoAboveItAll: The finale has him flabbergasted when [[spoiler:Kanata and Kengo casually reveal Kengo's identity as Trigger to him, after keeping it a secret for the majority of the series and deliberately stalling out the reveal during Kanata's own reveal of his identity.]]

* DeathIsCheap: No matter how many times it gets destroyed, Agams can bring it back using the Phase Riser and Terraphaser's Mons Dimension card, all thanks to its Sphere-powered nature. Even Agams' death isn't the end of Terraphaser as indicated by the preview of the finale showing Ryumon with the Phase Riser in his hands and presumably using it to activate Terraphaser against the Mother Sphere.

* MythologyGag: Much like his subordinate Alien Antira disguising himself as [[Series/ReturnOfUltraman Goh Hideki]] in ''Ace'', he takes Kanata's form to lure Ryumon and Ichika towards Aribunta. [[spoiler:He later takes Agams' form to bait Decker into protecting him, using this opportunity to trap him in a dimensional rift.]]

* TheWorfEffect: Episode 20 has him getting assimilated and mind-wiped by the Spheres.

* ADayInTheLimelight: She is the main focus of #10 due to Neomegas involving her mentor and their differing beliefs.

* BadassInDistress: In his second appearance, Kengo ends up captured by the Spheres, who probe his memories.

* SeenItAll: In the fourth special episode, when Hotta is panicking that the [[spoiler:Spheres are launching an all-out attack that threatens the Earth]], Marlulu remains calm since to him this is [[spoiler:just the ''second'' time Earth is in danger]].

** Akito knew from the start that Kengo was Trigger and resented his inexperience for it. Ryumon starts out unaware of Kanata's identity as Decker and his resentment is geared towards him seeing Kanata as a rookie who could compromise his entrance and later membership in GUTS Select.

* WhatTheHellHero: He blames Earth's advancement into space for his planet being sealed off by the Sphere and implicitly for the loss of a woman he loved -- his wife.

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* {{Expy}}: She's one to the girl who took photos of Asuka slacking off to blackmail him in Gregore's debut episode in ''Dyna''.

* AliensAreBastards: His true identity is Agams, an alien of Planet Bazdo, who plans to use Terraphaser to defeat Decker and let the Sphere conquer Earth. Though his evil is only a result of the trauma he's experienced from the Spheres' attack on his homeworld.

* {{Expy}}: Of [[Series/UltramanGeed Kei Fukuide]], as an evil {{Human Alien|s}} who poses as a respected and kindhearted intellectual on Earth but reveals his true intentions as a servant of evil out to destroy the series' Ultraman. For added bonus, Agams is named after a fictional character from Kei Fukuide's Cosmo Chronicle novel, and his SanitySlippage in Episode 22 also has parallels to Kei's own breakdown while overloaded on the Ultra Capsules' energy in Episode 12 of ''Geed''.

* EvilAllAlong: Unsurprisingly for a Deathfacer homage, it was never built for the purpose of protecting Earth, but for Agams to kill Decker and help the Spheres destroy Earth. Episode 22 reveals that it's powered by the Spheres' energy.

* WorfEffect: It was able to defeat Decker in all three of his forms, but when Decker transformed into Dynamic Type, it got completely trounced and eventually destroyed.

* EnergyAbsorbtion: He does this to [[spoiler:Mother Spheresaurus]] to absorb the [[spoiler:Eternity Core]] energy she took and using it empower Kanata's transformation into Decker.

* MyGreatestFailure: He still regrets his inability to save Carmeara even though it already has been a decade after her death. Thankfully Sphere-Megalothor's ressurection became [[MyGreatestSecondChance his greatest second chance]] due to Carmeara also being ressurected within it.

* MotiveRant: She delivers one in episode 25 while she attempts to assimilate GUTS Select and Trigger, which is similar to how the Gransphire developed a similar speech in ''Dyna'''s finale.

* SummonBiggerFish: The biger fish in question since she is the Spheres' progenitor, which the Spheres were trying to summon throughout the series.

** Him partnering up with a benevolent version of a usually malevolent ''Ultra Series'' mecha made by the series' defense team is a trait taken from Series/UltramanZ. [[spoiler:Unlike Z, however, their partnership doesn't lasts long after Agams hijacks the robot.]]

** She is heralded by Terraphaser's creation and deployment and confronts Trigger and Dyna, just like Queen Monera was heralded by Deathfacer and confronted Tiga and Dyna.

* CompositeCharacter: Much like Decker (Miracle Type) being Ultraman Dyna (Miracle Type) with Ultraman Cosmos (Luna Mode) abilities, Kanata is Shin Asuka but with Haruno Mushashi's tenderness as he lacks Asuka's cocky and hot blood antics. He is also shown to be reckless and childish at times, much like Asuka and Musashi were when they were still rookies.

* SecretSecretKeeper: Episode 19 heavily implies that Murahoshi knows Kanata's SecretIdentity, as he helps protect his subordinate's cover.

* BodyHorror: [[spoiler:Like Agams he gains a Sphere infection during his direct contact with them, except his case is much more horrifying as it extends to his arm from his abdomen and causes him even more pain than Agams had.]]

* TogetherInDeath: His final vision of his wife shows that his death might have finally reunited him with his loved ones.

* DarkIsNotEvil: Is colored a pitch black and has a fierce-looking red eye but it is a force of good under GUTS Select's custody. But it winds up subverted when Agams takes it over and it becomes an antagonistic force for the rest of the series.

* OneBadMother: And how. Once she comes to Earth, Mother Spheresaurus is ready to absorb the planet's energy so it can be assimilated by her creations.

* MyGreatestFailure: He still regrets his inability to save Carmeara even though it already has been a decade after her death.

* FunWithAcronyms: Inverted since there is nothing fun about the acronym of its codename with Marlulu theorizing if the DG stands for '''D'''ecker '''G'''enocide after Agams shows that the mechs true purpose is too kill Decker and commit genocide on humanity.

The previous members of GUTS-Select, who due to the lack of monsters on Earth were relocated to the Mars colony, only to end up trapped there after the attack of the Spheres. They then took it up themselves to protect the colony from further Sphere attacks.\\\

* GodSaveUsFromTheQueen: And how. Once she comes to Earth, Mother Spheresaurus is ready to absorb the planet's energy so it can be assimilated by her creations.

** Decker also serves as a pun on the Latin deca, marking Decker as the tenth New Generation Ultraman.