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Creator/OsamuTezuka's ''Astro Boy'', called ''Tetsuwan Atom'' ("Mighty Atom" or literally "Iron Arm Atom") in Japan, began life as a manga in 1952, and has been [[Anime/AstroBoy brought to television as an anime three times]], in 1963, 1980, and 2003. It's a historically significant series, as Tezuka's style defined the look of iconic anime and manga, and the English dub of the 60s show became one of the first popular animes in America.

In the [[{{Zeerust}} unimaginably distant future year of 2001]], Dr. Tenma, of the Institute of Science, loses his son in an accident. Half-mad with grief, the roboticist creates "Tetsuwan Atom," a rocket-powered android in his late son's image, and programs him to be a "good little boy." After a series of tragedies and misadventures, including abandonment by his "father," Atom is rescued and adopted by Dr. Ochanomizu, and decides to take up crime fighting. This decision soon leads him into all manner of danger and excitement, as he battles mad scientists, evil aliens and giant robots.

''Tetsuwan Atom''/''Astro Boy'' is something of a cultural phenomenon in Japan; the character is virtually a folk hero. For example, on April 7, 2003 - the date of Astro Boy's "birth" within the show - the third TV series debuted and celebrations were held all over the world. The largest, of course, were in Japan, but even across America and Europe Japanese neighborhoods threw parties to commemorate the event. A commemorative plaque stands in the Tokyo district that the manga identifies as Atom's birthplace.

The third TV series inspired a video game, ''VideoGame/AstroBoyOmegaFactor'', that is generally held to have avoided TheProblemWithLicensedGames; later a second game was released for the PS2 that unfortunately did ''not'' avoid TheProblemWithLicensedGames. A [[WesternAnimation/AstroBoy CGI movie produced by Imagi Animation Studios]] was released in October 2009, also bringing to the table a mediocre movie-based game that spanned several consoles. In early 2011, an iPhone/iPod game called ''Astro Boy: Tap Tap Rush'' was released, first in Japan and then later in the US. For a video game series that was directly inspired by this franchise, ([[DivorcedInstallment and was in fact going to be an adaptation before the company lost the license,]]) see ''Videogame/MegaManClassic''.
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!!The ''Astro Boy'' manga provides examples of the following tropes:

* AbusiveParents: [[spoiler:Dr. Tenma]] is an early {{manga}} example. After [[spoiler:he lost his son in a traffic accident]], he [[spoiler:built Astro Boy as a ReplacementGoldfish]]. Shortly afterwards, he [[spoiler:realized a ReplacementGoldfish is not a substitute for the original thing]], and he began to berate and scorn [[spoiler:Astroboy]] constantly, yelling him for such a nefarious crimes like being [[spoiler:unable to grow up]]. Finally he got fed up with him and [[spoiler:[[MoralEventHorizon sold him in slavery.]]]] Thank God that [[spoiler:Astro Boy was programmed to be a "good boy" and was taken in by Dr. Ochanomizu, who was an altruistic, kind man instilled and nurtured those traits in Astro Boy, or maybe he could have become a WoobieDestroyerOfWorlds.]]
* AnyoneCanDie: Yes, we do mean ''anyone.''
* AssKicksYou: He has dual machine guns in his butt. Which, coupled by the fact he's half naked all the time is the [[ValuesDissonance main reason]] [[WidgetSeries Western audiences find Astro Boy strange]]. Or hilarious. Or [[BreadEggsBreadedEggs strangely hilarious.]] (This has been debated constantly, though. Some think the machine guns are in his hips, and with Tezuka's simplistic drawing style at the time, you could probably see why.)
* AuthorAvatar: The collected editions have introductions in comic-strip form, showing Tezuka in his studio talking "to camera" about the stories (and sometimes being visited by the characters, who suggest things for him to explain to the audience).
* BadassAdorable: Whatever else he may be, Astro is ''always'' this. May be the earliest example, and certainly the earliest in anime. (Of course, Astro is the earliest for a ''lot'' of things in anime.)
* BlueAndOrangeMorality: One story had Astro encounter an alien who had assisted in humanity's evolution. Said alien, having seen what has become of the human race, decides to destroy if in order to put Earth out of its misery. When Astro counters that there are good humans, the alien simply retorts that "Good" and "Evil" are strictly human concepts; as far as the rest of the universe is concerned, "All humans are worthless!"
* CombiningMecha
* CompletelyDifferentTitle
* CompulsorySchoolAge
* ContinuitySnarl: Dear lord, ''so very many of them''. Try to put the stories into a continuous timeline and the only thing you'll end up with is a headache.
* CyberneticsEatYourSoul: Averted. In one story, a terrorist organization [[spoiler:steals dogs and grafts their brains in mechanical, humanoid bodies]] in order to create loyal and utterly obedient soldiers. However, in the prologue of the story, Creator/OsamuTezuka argued as far as he was concerned, the soul or spirit of the being always endures, even it if is mechanized.
* DealWithTheDevil: Subverted in the retelling of Astro's origin in the Scara time travel arc. A suspicious-looking Japanese-American businessman offers to fund Dr. Tenma's project to create a [[ReplacementGoldfish robot boy]], ''if'' Tenma will let the man borrow the robot for ''one day''. [[spoiler:The man turns out to be a civil rights activist who only shows Astro how badly robots need rights themselves.]]
* DetectEvil: Astro's incorruptible heart is advanced enough to tell if someone is evil or a complete jerk.
* DrowningMySorrows
* EverybodyHatesHades
* EvilCounterpart
* EvilutionaryBiologist
* FantasticDrug: In one issue, there was a drug called Yellow Horse which made the people who took it dance crazily.
* FantasticRacism: A major recurring theme. Humans in this future choose robots as scapegoats to society's problems.
* FluffyTamer: Uran
* FourFingeredHands
* TheHeroDies: [[spoiler:In the Scara arc, we see Astro's demise - which is directly linked to his birth.]]
* HugeGuyTinyGirl: The closest thing Uran ever got to a love interest was Pluto, who's at least two stories tall.
* HumongousMecha: While not a piloted mecha, Pluto comes close to being one.
* JustAMachine
* {{McNinja}}: A gag panel from the "World's Strongest Robot" arc.
* MiniMecha: Lots of them!
* MoodWhiplash: Oh good golly, people and robots ''died'' in this manga. Usually on camera.
* MotherlyScientist: Dr. Ochanomizu takes the parental role, as well as TheProfessor.
* NeverSayDie: variation: Tezuka and co. had faith that kids could handle such heavy concepts as death, but ExecutiveMeddling on both sides of the Pacific forced them to tone it down. He does kill humans a few times in the manga, though, including an eco-terrorist about to throw a bomb into a room full of hostages & scads of American soldiers about to bomb a village full of innocent civilians during a time travel incident that put him smack-dab in the middle of UsefulNotes/TheVietnamWar.
* NoNewFashionsInTheFuture: The series is set in the early 2000s, but clothing hasn't changed much since the 50s (or, later on, the 80s).
* NothingCanStopUsNow: [[spoiler: Hercules']] last words are "I am the greatest robot in the world!"
* NotSoDifferent: You have human-hating robots and robot-hating humans.
* OmnidisciplinaryScientist
* OurHeroIsDead
* ParentalAbandonment: Seeing that Astro was not physically growing, Tenma cruelly tells him he's not his son and sells him to the Robot Circus. But of course, Tenma was mentally unstable to begin with.
* PinocchioSyndrome: Astro constantly questions the humanity he protects to the point of being completely bewildered by their hostile actions to one another.
* PintsizedPowerhouse: Next to Pluto, Astro's quite possibly the most powerful robot on Earth.
* PowerLevels: Astro's power is measured in horsepower, possessing in essence a 100,000 limit.
* TheProfessor: Astro's mentor, Ochanomizu.
* RageAgainstTheAuthor
* RecycledInSpace: It's ''Pinocchio'' WITH ROBOTS!
* ReplacementGoldfish: [[{{Deconstruction}} Deconstructed]].
* ReusedCharacterDesign: As usual for Tezuka, many of the supporting characters are drawn from his "Star System" of recurring character designs. Played with in one story where Astro is approached by a sinister-seeming businessman who turns out to have altruistic motives; for Tezuka fans, the initial distrust is enhanced by the businessman's character design, which Tezuka had previously only used for villains.
* RidiculouslyHumanRobots: Astro and Uran fit this to a T. Other machine characters look less human, even other androids like Astro and his sister aren't that perfect.
* RoboFamily: One of the first examples (if not ''the'' first), Astro has his sister Uran, a couple of brothers (who don't appear in most adaptations for reasons of AdaptationDistillation), and his robot parents, all created after him to remedy his lack of a real family; as well as his other sibling [[spoiler:Atlas]].
* RobotBuddy
* RobotGirl: Uran.
* RobotKid
* ScienceMarchesOn: "Ivan the Fool" had the Moon having frozen air on it which was let free by the sun rising, allowing humans (such as the spaceship passengers [[spoiler: and Soviet astronaut]] who were stranded there) to live until the sun set. We now know this not to be the case.
* {{Sentai}}
* SuperPoweredRobotMeterMaids
* TechMarchesOn
* ThoseTwoGuys
* TimeTravel - The Scara arc has the explosion of an alien spaceship send Astro back to 1969. Several other stories contain time travel as well.
** NeverTheSelvesShallMeet: Astro[[spoiler:'s lifeless body]] still exists by the time Dr. Tenma originally constructs him, and the newborn Astro can't be activated until [[spoiler: the older Astro is destroyed.]]
** TheSlowPath: After he's sent to the past, Astro has to live through the time until his present.
** TimeyWimeyBall
* TransformingMecha
* TwentyMinutesIntoTheFuture: The original manga was written in the 50s and set in the early 2000s.
* UnbuiltTrope
* UnderwearOfPower
* {{Utopia}}: Astro's world is a more hopeful vision of the future, with all the cliches seen today: high-rise buildings stretching into the sky, robots everywhere, flying cars, and world peace. In the manga, the only country that wages war is Pekoku (Peacock). Tezuka lived in a time where nuclear war seemed a great possibility and as such the manga was a positive look on the use of atomic power.
* WarringNatures
* WhatMeasureIsANonHuman: Deconstructed.
* {{Zeerust}}: For one thing, robots in the future still run on vacuum tubes. And atomic power is still considered a viable energy source for a portable generator. Later incarnations rectify this, though.

!!Other/unsorted:

* FountainOfExpies: Astro inspired the creation of another robot KidHero: ''{{Videogame/Mega Man|Classic}}''.
** There's been lots of imitations and variations of Astro Boy around the world over the years, in various media. Just in the United States in recent years, there were the RobotBoy and ''WesternAnimation/MyLifeAsATeenageRobot'' animated series.
** Don't forget Rusty the Boy Robot. [[CatchPhrase Hypersonic]]!
** ''Jetter Mars'' was an interesting self-ripoff case where Tezuka recycled Astroboy's concept in a hurry to create a new TV series. Despite the obvious similitudes, Jetter Mars had some interesting details, Like Jetter's ability to grow like a normal kid and ever having dreams while sleeping. He also appeared in the GBA game and his conversation with Astro Boy only can be described as a funny, epic lampshade.
* UltimateUniverse: ''Manga/{{Pluto}}''.

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