->''What sin could a man commit in a single lifetime to bring'' this '' upon himself?''\\
-- '''Lt. Colonel Glenn Manning'''

''The Amazing Colossal Man'' is a giant monster movie made in 1957, directed and produced by Creator/BertIGordon and released by Creator/AmericanInternationalPictures as a double feature with ''Cat Girl''; it's also a TropeCodifier for "AttackOfTheFiftyFootWhatever".

Lieutenant Colonel Glenn Manning, Korean War veteran, is one of the lucky soldiers sitting in the trenches waiting to witness the test of a new nuclear weapon, a "plutonium bomb". The bomb doesn't go off when it's triggered, and Glenn gets caught in the blast when [[TooDumbToLive he races to rescue the pilot of a plane that crashes in the test area]]. It seems to be enough of a miracle for him to be found alive with severe third degree burns, but... well, this ''is'' how ''The ComicBook/IncredibleHulk'' got started.

Sure enough, his burns are miraculously healed the next day; and soon after that Glenn's fiancee learns he's been spirited away from his original hospital to an abandoned medical facility in the desert. Traveling there, she does eventually learn that [[ILoveNuclearPower exposure to the bomb]] has caused Glenn's body to grow out of control and he's become a giant. And, he's continuing to grow at an alarming rate. Even worse, [[YouFailBiologyForever since his heart's a single cell]], it's not keeping up with the rest of him, causing fainting spells, chest pain, the risk of eventual death... oh, and mental trauma on top of the obvious problems of being fifty feet tall.

Eventually, Glenn goes insane, kills one of the doctors trying to cure his growth, kidnaps his fiancee, and rampages through UsefulNotes/LasVegas before being taken down by the Army.

The film [[DevelopingDoomedCharacters spent quite a bit of time]] justifying tropes like ILoveNuclearPower audiences now take for granted. It also went into detail about Glenn's [[IncrediblyLamePun growing]] angst and insanity caused by his condition.

A sequel, ''War of the Colossal Beast'', was released by AIP in 1958 with ''Film/AttackOfThePuppetPeople''. In this installment, Glenn is found alive in Mexico after the events of the first film, scarred, mindless, and hunting bread trucks to survive; his ever-devoted [[strike:fiancee]] [[RememberTheNewGuy sister]] finds him and leads the U.S. military to bring him back to Los Angeles. [[IKnowYoureInThereSomewhereFight They can't restore Glenn's memory]], and he inevitably goes on another rampage. Glenn's sister talks the Beast into freeing a bus of students he held captive, and Glenn, suddenly regaining his humanity, commits suicide by electrical power lines, somehow both disintegrating himself and turning the film from black-and-white to color for the last minute.

For the ''Series/MysteryScienceTheater3000'' versions of these films, please see the following [[Recap/MysteryScienceTheater3000 episode recaps]]:
* ''[[Recap/MysteryScienceTheater3000S03E09TheAmazingColossalMan The Amazing Colossal Man]]'' [Episode 309]
* ''[[Recap/MysteryScienceTheater3000S03E19WarOfTheColossalBeast War of the Colossal Beast]]'' [Episode 319]
!! ''The Amazing Colossal Man'' and ''War of the Colossal Beast'' contain examples of:

* TheAdjectivalSuperhero: Okay, not really a hero, but it follows the naming pattern.
* AluminumChristmasTrees: Yes, many 1950's atom bomb tests had soldiers walking ''towards'' Ground Zero after the nuke exploded, ForScience And yes, many lawsuits ensued decades later.
* YouFailBiologyForever:
** The heart is but a ''single'' cell? They probably got the "single cell" thing from the fact that heart muscle is ''syncytial'', which means that its cells are not separated by membranes.
** The official explanation for Glenn's growth; apparently instead of cellular division, "old cells" are replaced by "new cells" and in Glenn's case the "old cells" are "refusing to die". There's another word for that: cancer.
* ArtisticLicenseCars: Or, more specifically, school buses. The school bus of terrified kids picked up by Glenn in the sequel has an extremely low ceiling so none of the kids can possibly stand up. There's no way a real school bus would have an interior like that.
* ArtisticLicenseNuclearPhysics: The soldier in charge of the team waiting to be exposed to the fallout of the bomb (don't you just love the Fifties' callous disregard for safety?) explains that they can't tell when the bomb will explode because they have to "wait for the nuclear reaction to cool off." Clearly the writers had no concept of critical mass.
* AsHimself: The reporter for TV station KTLA in the sequel was Stan Chambers, an actual KTLA reporter.
* AttackOfTheFiftyFootWhatever: The UnbuiltTrope. Most of the first film is about how painful actually growing to that size would be as well as how scary and frightening the experience is.
* CassandraTruth: A truck driver delivering large quantities of food to the military base where Glenn Manning is being housed asks why the base suddenly needs all the extra food. The guard on duty finally admits it's for the 30-foot giant living on the base. The driver replies with a sarcastic "Sure you do" and drives off.
* TheDanza: Glenn Langan as Glenn Manning.
* DownerEnding: Both movies.
* DyingAsYourself: Glenn finally remembers who he is and who Joyce is before being DrivenToSuicide.
* IKnowYoureInThereSomewhereFight: Attempted to restore Glenn's memory in the sequel.
* ILoveNuclearPower: How Glenn got so darn big.
* ImpaledWithExtremePrejudice: Major Coulter has a giant-sized syringe thrown through him.
* LargeHam: Glenn once SanitySlippage starts to kick in.
* MagicPants: Averted (or at least {{lampshaded}}) for once.
-->"Who else but a clown would have an expandable sarong like this? You know, it's adjustable. I can grow to be a hundred feet tall, and I don't need a change of wardrobe. Army ingenuity!"
* MonumentalBattle: The climax happens atop Hoover Dam, Glenn also destroys a few famous (circa 1950s) pieces of the Vegas Strip along the way.
* NightmareFace: There's no other way to describe Glenn's face in the second film...
* NoBodyLeftBehind: Glenn in the sequel.
* NoMoreForMe: What a drunk says when he sees Glenn.
* RealPlaceBackground: The sequel's finale is set in LA's Griffith Park.
* SarcasticConfession: When a truck driver asks what all the food he's delivering is ''really'' for, the sentry says it's for the giant living in the circus tent over there.
* SeriesContinuityError: Several details of the sequel blatantly contradict the events of the original film. Likely in the days before home video, they were hoping no one caught this.
** It's claimed [[FindTheCure the serum developed in the first film]] only stopped Glenn's growth, but wouldn't shrink him back. In fact, the serum was shown capable of shrinking even animals without abnormal factors altering their growth.
** Glenn's sister is a major character in the second film, but when his fiancee is asked about Glenn's family in the first film, she states that she herself is all he has.
* ShrunkenOrgan: Glenn's heart.
* SquareCubeLaw: Played straight, although the "heart as a single cell" bit was probably meant in the same spirit as an aversion.
* SuspiciouslySimilarSubstitute: Glenn's devoted and loyal sister Joyce [[RememberTheNewGuy who never appeared in the original film]] is a lot like Carol, his devoted and loyal fiancee who [[BrotherChuck never appeared in the sequel]].
* {{Tagline}}: Several, such as:
-->''[-Growing...!-] Growing...! '''Growing...!''' To a Giant! To a Monster! When will it Stop!''
* TechnicolorDeath: Glenn in the sequel, literally.
* TitleDrop
-->'''Glenn:''' Why don't you make me up a sign saying ''See the Amazing Colossal Man''?
* TooDumbToLive: Let's go over this again. Glenn ''runs into the test site of an experimental new bomb'', shortly after the bomb has been triggered but has not detonated yet, against the direct orders of his superior officer AND any and all common sense, to try to rescue a downed airplane pilot who didn't respond to radio, has given no indication or clue that he is alive (or, thanks to Bert I. Gordon's classic off-camera style, even exists), and is most likely dead by now. [[GoodIsDumb Well, he had good intentions...]]
* TrailersAlwaysSpoil: Every trailer for ''War Of the Colossal Beast'' shows the TechnicolorDeath MoneyShot of Glenn getting fried.
* TwoFaced: In ''War of the Colossal Beast'', half of Glenn's face has been left as exposed bone with an empty eye socket. [[TheNthDoctor This was a perfect excuse to cast another actor as Glenn.]]
* TheUnintelligible: All Glenn can say in the sequel is, "Uhhhhhhhhh".
* WhatHappenedToTheMouse: The audience never DID learn where that doomed pilot (the one Glenn was trying to rescue) came from in the first place, though one character speculates they were vaporized.
* WouldHurtAChild: Narrowly averted in the sequel when Joyce talks Glenn into putting down the bus filled with children.