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[[caption-width-right:300:Nova(L), Grey(R), and the [[LaResistance Resistance]] base Nagoshi(back).]]

''Grey'' is a {{Shonen}} {{Manga}} created by Yoshihisa Tagami and published by Tokuma Shoten in Monthly Shōnen Captain magazine (and Creator/VizMedia in North America). Originally running between 1985-1987 culminating in three volumes.

The {{Manga}} was also adapted into an Animated Film, ''Grey: Digital Target'', on December 13th, 1986. It was produced by Creator/MagicBus and Tokuma Japan Corp. under the direction of Satoshi Dezaki with a total runtime of 73 minutes. (Creator/VizMedia also released a translation of ''Digital Target''.)

Both the {{Manga}} and animated film tell the story of a post-apocalyptic world covered in wastelands and only dotted with the occasional small town. Each town is supervised by a "Little Mama" computer, a node connected to the world governing super-computer called "Big Mama". The underprivileged in each town, known as "People", live in the slums, work for a pittance in factories, and are subject to both attack from other towns and abuse from the "Troopers" -- the town military. Anyone can apply to become one of the privileged "Troopers", join the army and fight the other Towns in a perpetual war. The Troopers trade a low survival rate for being able to afford the finer things in life -- and fight in the hope that if they live long enough, they can become "Citizens" -- inhabitants of the legendary capital city of the world.

The story follows Grey, a successful combatant who joined the army after the death of his girlfriend, Lips, during one such war. Even though he originally despised the Troopers and everything they stood for, Grey continues to fight and is continually seeking an answer for why Lips had to die. Grey has become legendary among the Troopers of his town, both for his success rate in battle and the tendency to return as the SoleSurvivor of any squad he's sent out with. They call him "[[RedBaron Grey Death]]"...
!!Tropes associated with ''Grey'':

* AdaptationalVillainy: [[spoiler:The Resistance is more explicitly a FalseFlagOperation operated by Toy in the ''Digital Target'' OVA. More blatantly, Lara is actually an agent for Toy in the anime; the manga had her as a former "Sure" unit, originally programmed by Robert J. Dimitri as a [[TheMole mole]] to assist humans willing to fight Toy.]]
* AGodAmI: [[spoiler:Toy]] really believes it has become the god of a new world.
* AIIsACrapshoot: Toy was the world's first sentient computer, built centuries before the beginning of the story. [[spoiler:It started what was basically World War III, took control of the world-controlling computer net under the guise of "Big Mama", and created the system of Trooper classes from F to A to force the remaining towns to fight and destroy each other.]]
* AMechByAnyOtherName: Both the human-sized robots and the varieties of Humongous Mecha age generally called "Dolls".
* AnyoneCanDie: Troopers have a low surival rate and beat on the people in the towns.
* BarbieDollAnatomy: Averted with both male and female anatomy.
* CombatPragmatist: Grey is so successful because he has no standards in combat.
* CrapsackWorld: Live sucks for the People and the Troopers are only better off if you consider a shorter lifespan for greater comfort to be better. The captial citizen Citizens live a good life [[spoiler: but they don't exist.]] The world itself is a wasteland.
* DeadpanSnarker: Grey and Lee. It helps them survive the horror all around them.
* DeathByOriginStory: Lips' death is the reason Grey joined the Troopers.
* DoAndroidsDream:
** When the chief of LaResistance was killed, his brain was downloaded into a robotic body: he thinks he has been turned into a cyborg, i.e. a human mind into a mechanic body, when he's actually became nothing more than an AI.
** Also, Lara (the head of LaResistance) is a human body with the electronic mind of a Sure fembot implanted.
* {{Dystopia}}: In this future world animals are extinct, plant life is almost gone, oceans are drying, human society only exists to fight an endless war and people die if something goes wrong with Little Mamas' data transmission. Also, [[spoiler:[[TheReveal the Capital City is just a fraud concocted by Toy in order to get Troopers to kill each other]].]]
* EenieMeenieMinyMoai: The City's humongous floating fortress is shaped like a Easter Island head.
* EvilPlan: [[spoiler: Big Mama, AKA Toy, believes humanity as a whole wants to self-destruct so it created the Trooper wars to help it reach that goal faster.]]
* EmergencyTransformation: LaResistance rebuilds Grey as a cyborg after he [[StormingTheCastle infiltrates their base]].
* FemBot: The "Sure" robots that perform secretary duties for Little Mamas.
* FluffyTheTerrible: [[spoiler:Toy is a deadly AI with a god complex.]]
* FullFrontalAssault: After Grey and Nova arrive at the Resistance base/temple Shidara, Nova tries to take a shower, just before a force from a high-numbered Town attacks them. Nova is forced to help fight wearing nothing more than a machinegun, shoes, and a wide-open jacket -- and she [[TookALevelInBadass does well enough]] that Grey lampshades it:
-->'''Grey:''' You fight better without your clothes!\\
'''Nova:''' Because I don't want to die ''naked''!
* GreyAndGrayMorality: Grey has a sense of honor, but he's willing to use the team he's assigned to as decoys in the first arc, and he knows he's NotSoDifferent from the Trooper who killed Lips. On the other hand, for someone seeking vengeance, he's very willing to see his opponents' points of view: [[spoiler:he forgives the man who was responsible for the CrapsackWorld he hates, he accepts Lara's explanation of why Nagoshi seemed to cross the MoralEventHorizon by killing Nova, and he accepts Toy's MotiveRant about humanity being self-destructive until it segues into megalomaniacal ranting.]]
* HonorBeforeReason: After surviving the mission in the first arc, Grey's promoted to a rank where he can be kicked upstairs for an easy ride to Citizenship in five years -- if he wants. While thinking it over, he finds out that Red -- his mentor -- had been attacked in the field. Grey immediately sacrifices his chances at promotion to hijack a plane and mount a rescue mission of the man under whose command Lips died.
* KnightInSourArmor: In a world as bad as this one, this is the highest level of heroics one can achieve.
* LaResistance: Nagoshi, led by the "queen-goddess" Lara.
* LogicBomb: At the very end, during the final showdown between Grey and [[spoiler:Toy. The computer]] is about to kill Grey while claiming [[AGodAmI to be a god]] and that the human race must be wiped away. Grey asks it how could he be considered a god, if there will be nobody left to worship it. This stuns [[spoiler:the master computer]] for a little while, allowing Grey to finally destroy it.
* ManBehindTheMan: Robert J. Dimitri, the hundreds-years-old cyborg, is behind ''everything'' that happened in the manga. [[spoiler:Not only did he creat Toy, but after Toy went mad and started destroying the world, he turned himself into a cyborg and created the Sure fembots for the purpose of helping the ChosenOne (Grey, in this case) to defeat it. The Little Mamas are also guarded by robotic duplicates of him (those bald-headed guys). Finally, he destroyed Nagoshi's base (see SuicideAttack below), thus causing LaResistance's fall]].
* MasterComputer: Big Mama [[spoiler:(a.k.a. Toy)]].
* MechaMooks: Grey and Nova are slightly annoyed when they learn that some of the soldiers they killed in the first storyline were "Dolls", which Little Mama didn't pay a bounty for. Later, the Cities send fully automated Humongous Mecha at Grey and the Resistance.
* MysteriousMiddleInitial: Robert J. Dimitri, the engineer who created the supercomputer Toy and the "Sure" fembots guarding the access to "Little Mama" in every town.
* NotSoDifferent: Grey equally hates the City and Nagoshi, seeing them as ideals that only bring death and despair. In fact, Nagoshi kidnapped [[TheMentor his mentor Red]], brainwashed him and turned him into a killer cyborg, whom Grey was forced to defeat and destroy.
* OmnicidalManiac: [[spoiler: Toy organized all the whole war thing because, according to its calculations, mankind's ultimate goal was self-destruction. He wanted to help it reach that goal faster.]]
* OnlyKnownByTheirNickname: Almost all characters are only known by their battle names.
* PosthumousCharacter: Lips is never seen outside of flashbacks.
* PreExplosionGlow: When something big explodes it almost always glows white before doing so.
* TheReveal: [[spoiler:Grey and Lara, after having witnessed the death of all their former comrades, finally reach the capital. They discover that the "Citizens" are actually droids controlled by Toy, and nobody ever became a Class A Trooper.]]
* SacrificialLamb: Most of {{the squad}} that Grey gets assigned to at the beginning. They had apparently become TrueCompanions in previous missions before their deaths, adding tension to how Nova has to work with Grey to survive the first arc.
* SchizoTech: Troopers from three-digit towns are issued UsefulNotes/WorldWarII-vintage weapons, despite having more advanced technology for support equipment, transport to and from battlefields, and their town's Little Mama. Lower-numbered towns have more and more advanced equipment such as HumongousMecha and FrickinLaserBeams.
* {{Shinigami}}: Grey's nickname in the original manga.
* SortingAlgorithmOfEvil: "evil" has a loose value in this series but the towns that Grey faces are ranked according to their threat and advanced weaponry level.
* SparedByTheAdaptation: [[spoiler: Nova]] originally [[SacrificialLion died halfway through the manga]] to show that TheRevolutionWillNotBeCivilized; she survives that plot point in ''Digital Target'' because she was popular.
* StormingTheCastle: Grey liberates a La Resistance base from enemies this way.
* SuicideAttack: Some examples, most famously Robert J. Dimitri as a cyborg downloading his conscience in the body of a "Ion" (a dog-shaped robot) and blowing himself up in the reactor of Nagoshi's floating base, triggering a chain reaction that eventually destroys it.
* TechnologyMarchesOn: When Grey gets turned into a cyborg, computers around him still have space for floppy disks. Possibly a case of {{Zeerust}} given the conditions of the world.
* TragicKeepsake: Grey wears the helmet that Lips wore on her one mission -- complete with her name written on it, and the hole from the shot that killed her. He shrugs it off when Nova brings it up: "I've got a funny-shaped head. It's the only helmet that fits."
* WarForFunAndProfit: The main reason for Troopers to fight is to escape the low "People" caste; in addition, their performance in battle (which divides them in classes from F to A) determines whether they get promoted enough to be admitted to the City, where the elite live in luxury.
* WarIsHell: A constant war that has no reason other than 'increase in rank' where the survival rate is low and the only reason anyone joins is to escape the lower caste of 'People'.