[[caption-width-right:340:[[NotYourDaddysX Not Your Daddy's]] ''Series/UltraSeven'']]

''Ultra Seven X'' is a 2007 {{toku}}satsu Dirty Martini SpyFiction series produced by Tsuburaya Productions. It is a DarkerAndEdgier reimagining of the classic ''Series/UltraSeven'' series.

In the 23rd century, Deus agent Jin has contracted amnesia and is in a strange apartment. Upon waking up, he sees that he has a strange item, the Ultra Eye. With it, he can change into the mysterious giant called Ultra Seven X. Now, he must fight the alien invaders that threaten his world and figure out the mystery behind his missing memories.

This is one of the few Ultras in the ''Franchise/UltraSeries'' [[NotSafeForWork aimed exclusively at adults]].

!!''Ultra Seven X'' provides examples of the following tropes:

* AdaptationalBadass / ArtEvolution: The Ultra Seven X was given an edgier, sleekier and more-muscular [[{{Heel}} heel-wrestler]] appearance (similar to ones in Japanese ''puroresu''), compared to his original counterparts.
* AFormYouAreComfortableWith: The BigBad appears as a group of middle-aged people. [[spoiler: Their true form is a HiveMind of insectile subterranean creatures.]]
* AwakeningTheSleepingGiant: [[spoiler:The prime Ultras were unaware of the Grakyess ruling the alternate Earth. Then the Grakyess decided to invade their universe. Cue Ultra Seven following them back to their universe and ultimately annihilating them all.]]
* AttackOfThe50FootWhatever: Well, it's an Ultra series, but surprisingly averted most of the time. A lot of the MonsterOfTheWeek are human-sized.
* ActionGirl: Agent S.
* AwfulTruth: [[spoiler:The world is secretly controlled by a mysterious group via manipulation of information and constant surveillance, DEUS is firmly under their control and has been servicing their agenda, and they plan to cross over into an alternate universe to expand their rule.]]
* BackFromTheDead: Agent D. [[spoiler: Turns out he faked his death to be with his alien lover.]]
** [[spoiler:Jin himself. He died prior to the start of the series and was resurrected by fusing with Ultra Seven.]]
* BadassBookworm: Elea Saeki, [[spoiler: Jin's lover,]] is a scientist and while she may not be able to fight like the agents, she's quite proficient with guns.
* BadassCrew: Jin, K, and S are top-of-the-line agents.
* BigDamnHeroes: Seven, of course, especially in the final episode [[spoiler:once he gets his memory back. The best example has to be when he rescued the injured K and S, preventing their HeroicSacrifice.]]
* ButtMonkey: Agent K, especially when Agent S is around.
* BreatherEpisode: One episode has a non-malicious spacefaring alien, [[LastOfHisKind the final living member of its species]], who attaches itself to Jin's space otaku friend to take him with it into space as a companion. This is the only episode where absolutely no one gets harmed. In fact, Jin turned into Seven [[CrowningMomentOfHeartwarming just to give them a proper sendoff into space.]]
* TheCameo: In the final episode of the series, [[spoiler:[[Series/UltraSeven Dan Moroboshi (Kohji Moritsugu) and Anne Yuri (Yuriko Hishimi)]] are shown reuniting after Ultra Seven returns to his home universe.]]
* CombatPragmatist: In contrast to other Ultraman shows, this Seven does not pull his punches and often uses his most powerful moves as soon as the battle begins, averting WhyDontYouJustShootHim situations.
* ContemplateOurNavels: Some of the early episodes can feel like this.
* CrouchingMoronHiddenBadass: K is pretty laid back most of the time, acts like he's terrified by S, and usually fits the group's TheSmartGuy role. In the final episodes, he showed us just why he was chosen as a DEUS member by [[spoiler:disarming S, who was pointing her gun at his head, and holding both her and Jin at gunpoint.]]
* DarkerAndEdgier: One of the darkest shows in the ''Franchise/UltraSeries''.
* DidYouActuallyBelieve: [[spoiler:[[InvertedTrope Inverted]]; when K finally meets up with Jin and Elea, K holds Jin at gunpoint. However, after Jin remains resolute in helping her and asks for K's trust, K laughs, puts down his gun, and asks if Jin actually thought he was going to fire.]]
* EarlyBirdCameo: S appears in the first episode disguised as a waitress before her proper introduction in the fourth episode.
* EasyAmnesia: Jin is unable to remember anything about his past. [[spoiler:It was actually Seven who purposely sealed away his consciousness, along with Jin's memory, because the former feared he would erase the latter's personality upon fusing with him.]]
* EnemyMine: All over the place. One episode has civilian delinquents and DEUS agents fighting the murderers.
* EvilAllAlong: [[spoiler: The boss of DEUS is the BigBad, and the purpose of DEUS is to destroy threats to their rule.]]
* FaceHeelTurn: Agent R, who sided with the abductor aliens after he lost his wife. Near the end, [[spoiler: every DEUS agent except K and S were sent to eliminate Jin, Elea, and K and S themselves.]]
* {{Foreshadowing}}: In the sixth episode, the bartender at the bar Jin is visiting asks him to bring his girlfriend sometime. Jin replies that he doesn't have one. [[spoiler:He does. It's Elea.]]
* HeroicSacrifice: [[spoiler: Almost happens to K and S in the final episode.]]
* HoldingBackThePhlebotinum: Ultraseven himself doesn't normally appear beyond the last 5 minutes of the episode, and his battles in some of the later episodes were almost [[SingleStrokeBattle single-stroke battles]]. [[spoiler: Also used by Seven, who sealed his consciousness for fear that he will erase Jin's, giving him his EasyAmnesia.]]
* HumansAreTheRealMonsters: The third episode in a nutshell. While there is a MonsterOfTheWeek building a device for conquering Earth and [[HumanResources using people's minds for an energy source]], he's being willingly assisted by human workers. Even when Jin flat-out tells them that their boss is an alien, the device they're building will be used for invading the planet, and they're literally killing themselves, the employees state that they don't care as long as they're being paid. [[spoiler:Even worse, the alien confirms that the clients he's building the device for are humans themselves.]]
* InterSpeciesRomance: Happened between [[spoiler: agent D]] and an [[HumanAliens alien girl]] who was so entranced with earth music that she abandoned her invasion mission. There are two other examples, but they both [[LoveHurts ended in tragedy.]]
* LetteredSequel
* LikeAnOldMarriedCouple: Invoked when K told S that, being agents who are considered nonexistant to the rest of the world, she was the closest thing he had to a wife [[spoiler: right as they prepare for their HeroicSacrifice.]]
* MeaningfulName: One MonsterOfTheWeek is named "Beast Man", and he's one scary alien.
* MuggingTheMonster: [[spoiler:The Grakyess attempted to invade the prime universe. Ultra Seven's response is to decide to save ''both'' worlds. It becomes ''very'' apparent during the FinalBattle that the Grakyess never stood a chance, as while three Mecha Grakyess are able to beat Jin as Ultra Seven, the fully awakened Ultra Seven mops the floor with them, then proceeds to end the Grakyess' occupation of Earth in a matter of seconds.]]
* MutualKill: [[spoiler: Happens at the end of Episode 5, when two alien races at war blow up each others' planets. To drive home the fact there are no survivors, a number of ships are shown trying to flee... but don't make it.]]
* MyGodWhatHaveIDone: One of the aliens has this reaction when he realized that [[spoiler: he killed his own wife and, unable to cope with reality, modified his own memory where his wife was the monster instead of him.]]
* NiceJobBreakingItHero: The fifth episode has the agents help retrieve an alien race's stolen power crystal, which was revealed at the end to be a [[spoiler:[[FantasticNuke planet-destroying bomb]] which they will use to wipe out their rival species. [[DownerEnding Both species' planets end up being destroyed in the ensuing conflict.]]]]
* NiceJobFixingItVillain: [[spoiler:The Grakyess' attempt to invade the original universe not only fails, it ends up drawing the attention of Ultraseven who decides to SaveBothWorlds. The Grakyess' ultimately got themselves (and a number of other alien invaders) killed by making an attempt to invade a world out of their league.]]
* OutsideContextProblem: [[spoiler:It turns out Ultraseven X is the ''original'' Ultraseven who decided to SaveBothWorlds when the Grakyess tried to invade his world. Ultras don't seem to naturally exist in the alternate world, and thus most aliens are ill-prepared to go up against him.]]
* PeaceAndLoveIncorporated: The giant floating TV screens all around the city preaching about how to be a good citizen reeks of it. [[spoiler: These are actually surveillance and attack drones of the BigBad.]]
* PunchClockVillain: One MonsterOfTheWeek fashions himself as a recruitment agent for his WMD factory and he fights in order to protect his business interests, not an invasion plan. On top of that, [[HumansAreTheRealMonsters his clients were Humans]].
* RoaringRampageOfRevenge: One alien does this after [[spoiler: his human form was killed, turning him into a [[TheBerserker crazed]] monster who killed his killers and his own wife.]]
* TheReveal: [[spoiler:This is the same Ultra Seven from the [=M78=] universe who came into the X world to stop the Grakyess, the BigBad of the series, from crossing into the Seven's side.]]
* ShoutOut: The eighth episode turns out to be one to [[spoiler:''{{Film/Psycho}}'']]. Jin even explains the film's premise near the end, though he doesn't mention it by name.
* TragicMonster: Quite a few.
* SaveBothWorlds: [[spoiler:Ultra Seven ''invokes'' this. When the Grakyess attempted to invade his world, he cuts them off by coming to ''their'' world and trying to save it too.]]
* SweetTooth: Agent S really likes her chocolate balls.
* SpellMyNameWithAnS: Agent K is a OneLetterName like some other DEUS agents, but is he really named Kei like it was pronounced?
* TransformationTrinket: The Ultra Eye.
* VaguenessIsComing: A lot of Elea's dialogue with Jin comes across as this, since it's obvious she knows much more about what's happening than he does and is withholding the information. [[spoiler:She's keeping the full truth from Jin since, due to his fusion with Ultra Seven, he risks losing his consciousness entirely should he regain his memories.]]
* YouHaveOutlivedYourUsefulness: Agent R. [[spoiler: Also happens to the main protagonists.]]
* YourMindMakesItReal: In one episode, S ate [[MonsterOfTheWeek an alien organism]] and had severe stomach pains afterwards. Turns out Jin had swapped the tablet containing the parasite with an ordinary multivitamin tablet...S was not happy.