* In ''PhineasAndFerbTheMovieAcrossTheSecondDimension'', this happens a few times. The first is Candace-2 saving Phineas, Ferb, Perry, Dr. Doofenshmirtz, and Candace from a lava pit after they were being sent to their doom. She [[ItMakesSenseInContext rides a giant lawn gnome]], smashing into the MechaMooks and throwing the Other Dimensioninator remote to Phineas, which he catches.
** She then gets apprehended by Doof-2, and is sent to jail. But, Jeremy-2, Phineas-2 and Ferb-2 bust her out.
** Next, in the film's climax, Perry comes to the aid of his fellow animal agents fighting off Doof-2's MechaMooks. Phineas rescues Perry afterward. Finally, the kids come to ''their'' aid, [[spoiler: using almost all of Phineas and Ferb's previous inventions]].
** At the very end, right when it looks like Doof-2 is going to ''kill'' Phineas, Ferb and Perry, [[spoiler: ''our Doof of all people'' bursts in and [[ItMakesSenseInContext gives Doof-2 the model train he lost as a kid which made him competently evil,]] causing Doof-2 to go through a HeelFaceTurn. [[CrowningMomentOfFunny But stills gets arrested for his crimes against humanity, that had slipped his mind at the moment.]] ]]
** Perry (and Doof somewhat) serves as this in "Phineas And Ferb Get Busted".
* ''WesternAnimation/SouthPark'': Al-Qaeda of all people in "It's a Jersey Thing".
* ''BeastWars'' has too many of these to list, generally set up by cutting to the good guys headed towards where they're needed, then cutting back to their destination and letting a scene play out until it's a good time for it to be interrupted by weapons fire. The best example of the trope occurred in "Coming Of The Fuzors, Part 2", when the Maximals are outgunned and surrounded. When it looks like they're done for (Megatron says, "Finish it."), the wall of the Maximal baseship blows open to reveal the new-and-improved Optimus Primal, BackFromTheDead and ready for a fight.
* ''{{Transformers}}'': Full of moments like these, mostly when a character is either first introduced, or appeared to be at death's door previously. One of the best examples has to be the episode "Key to Vector Sigma" where [[spoiler:Menasor has Superion pinned and is about to impale him on a large spike - only for Omega Supreme, nearly destroyed earlier in that episode, to show up and KO him]].
** In fact, Optimus Prime's entire fight scene against the Decepticons and Megatron from the 1986 Animated Movie is a Big Damn Heroes moment. This is acknowledged when Kup says "Optimus did it. He turned the tide".
** Also from 1986 Movie: when Hot Rod and Kup are almost being devoured by lots of sharkticons, [[spoiler: the Dinobots (and Wheelie) arrive in DynamicEntry, save their autobot friends and turn the sharkticons against their masters, the Quintessons]].
* ''WesternAnimation/AvatarTheLastAirbender'':
** "The Boiling Rock" has [[spoiler:Mai saving the group from having the gondola they're in dropped into the boiling lake]].
** In "Sozin's Comet": [[spoiler:Sokka and Toph are about to fall off an airship, and are surrounded by Fire Nation soldiers...in comes Suki, riding on top of another airship, giving them someplace to jump down to and destroying the first airship at the same time.]]
** If Appa is not with the group in a battle scene, then when he shows up it is guaranteed to be a BigDamnHeroes moment.
** Zuko saves Iroh from being crippled by Earthbenders early in Book 1. [[CrowningMomentOfAwesome They then proceed to mop the floor with them.]]
*** And in the first episode of season 2, [[CainAndAbel just as Zuko is about to be pwned by Azula]], [[CrowningMomentOfAwesome Iroh returns the favor.]]
* ''WesternAnimation/TheLegendOfKorra'':
** In "Turning the Tides", this happens multiple times as the battle rages in multiple locations throughout the city.
** The Fire Ferrets come to Tenzin's rescue as he is attacked by Equalists looking to kidnap him, along with the rest of the council.
** [[LetsGetDangerous Tenzin's three Airbender children storm in]] to rescue [[spoiler:Lin Beifong]] during the Equalist invasion on Air Temple Island.
** At the end of Book 2, [[spoiler:Jinora]]'s spirit comes to help Korra during her final showdown against [[spoiler:Unalaq]]. Her spirit is what gives Korra the resolve to defeat [[spoiler:Unalaq]] once and for all.
** At the end of Book 3, [[spoiler:Jinora and all the new Airbenders are up. The Big Damn Heroes make a Big Damn Tornado to ensnare the [[FlyingBrick flight-capable]] airbender anarchist Zaheer, who had Korra dead to rights.]]
* Happens here and there in ''WesternAnimation/DannyPhantom''.
--->'''Pariah''': ''(holding Danny and Vlad in his hand, both knocked out)'' Ghosts and humans! Is there no end to this day's surprises?
--->'''Valerie''': Hey, stoneface! Surprise! ''(shoots him in the face)''
* Also comes up in ''WesternAnimation/TheFairlyOddparents'' a few times. In fact, it's the first thing [[ShowWithinAShow Crash Nebula]] is seen doing.
* The ''WesternAnimation/TeenageMutantNinjaTurtles2003'' cartoon has at least two such moments:
** The first occurs in "City at War", when Raphael, who had [[AbandonedByTheCavalry abandoned the turtles]] after an offer to join forces with The Foot, returns for the final battle with Splinter in tow.
** The second occurs in "The Day of Awakening", when Cody, who had been left behind on Earth, burst into Moonbase Bishop to save the turtles from Sh'Okanabo.
** Splinter gets one of his own in the first battle with the Shredder, though given it was Shredder who [[spoiler: killed his master and was now trying to kill his sons,]] it makes sense he'd want a piece of the guy.
* ''WesternAnimation/BuzzLightyearOfStarCommand'' episode "The Return of XL" hangs a lampshade on this practice.
-->'''Booster:''' I just hope we're in time!
-->'''Buzz:''' It wouldn't be a real rescue if we were ''too'' early.
* The opening title sequence of the animated ''GIJoe'' movie definitely counts. So awesome that it overshadowed the rest of the film.
* From ''WesternAnimation/{{Futurama}}'': "How Hermes Requisitioned his Groove Back"
-->'''Morgan''': Bender's brain lost in the master in pile, and it would take some sort of giant, mechanical, atomic-powered sorting machine to find him.
-->'''Hermes''': You rang?
* In ''TheSimpsons'', when Bart is being mauled by a wolf (on school grounds, why not) when in steps Groundskeeper Willie, shirtless and ready to kick ass.
-->'''Groundskeeper Willie:''' Hey! Wolfie! [[PreAsskickingOneliner Put down that ''hors d'œuvre''! It's time for the main course!]]
* In the season 3 premiere of ''{{Metalocalypse}}'', a CorruptCorporateExecutive was trying to force Dethklok to sign a new contract advantageous to him. Nathan was going to put his signature on it [[spoiler:when Charles Ofdensen, their [[FakingTheDead thought dead manager]], shows up in the doorway to stop them.]]
** Later that season, when most of the band is captured by an evil sentient robot with a bomb inside it, and Ofdensen is powerless to help ([[WildMassGuessing possibly]]), Pickles pulls this trope off after resolving to TakeAThirdOption to fall off the wagon ''and'' save the band at the same time.
--> "I AM BACK MOTHERFUCKER!"
* In an episode of ''RockyAndBullwinkle'' Bullwinkle refuses to put out the fuse of a bomb until the last moment because "Heroes always arrive in the TA-DA! nick of time."
* Bunnies get to be BigDamnHeroes in ''WatershipDown'', when Hazel and his runners lure a Big Damn Dog to the warren, just in time to save Bigwig's life by decimating Woundwort's troops.
* Invoked in ''JusticeLeague''. Batman is falling without a parachute after ejecting from the [[{{Thememobile}} Batplane]], and is saved by {{Superman}} at the last moment.
-->'''Batman''': (Completely Deadpan) Batman to all points. I could use some air support. Since I can't fly. At all...Now would be good.
* This happens a lot in ''JonnyQuest''. One example would be in ''Manhattan Maneater'', when an amoral hunter is about to shoot a white tiger. Just before he pulls the trigger, a [[ScaryBlackMan gangster]] steps in the way and refuses to back down. And another happens not a minute later, when the tiger leaps to attack - only to be shot by a tranquilizer, thanks to Race and Dr. Quest who just made it to the scene.
* Subverted on ''{{Jimmy Two-Shoes}}'', when Beezy is [[ShotgunWedding being forced to marry]] the Weavil Princess. First, [[EnfanteTerrible Heloise]] bursts in, demanding the wedding stop...only for her to realize [[NoodleIncident it wasn't the McPherson wedding]] and dismiss herself. Then Jimmy comes in to try and stop it, only for the wedding cake to distract him. The marriage goes through, [[spoiler: though the Princess runs off anyway]].
* In the 1982 animated film ''Literature/{{Heidi}}'s Song'', Peter the goatherd and his [[NonhumanSidekick animal friends]] crash their way into the basement as Heidi is fighting off the rats. Complete with the "[[{{BattleThemeMusic}} That's What Friends Are For]]" melody playing in the background, no less.
* Bob in ''ReBoot'' gets to do one of these right when the Web Riders are about to slaughter everyone on the Saucy Mare. But instead of fighting the Web Riders he orders them to stop, having gained their trust offscreen.
* ''WesternAnimation/TeenTitans'': Way, ''way'' too many to list, considering it's a show about heroes. There are a few notable moments, however:
** Red X, of all people, has one of these when he shows up out of ''nowhere'' [[JustInTime just in time]] to prevent Robin from falling to his death by snatching Robin out of thin air and tossing him to safety on a catwalk.
* Believe it or not, ScoobyDoo gets one in episode 10 of [[ScoobyDooMysteryInc Mystery Inc]]. He [[spoiler: rescues Velma and Shaggy from a demonic robot dog by [[ForkliftFu beating it senseless with a forklift]]. Think about that for a second. Scooby Doo beats a robot dog that would make the terminator proud to a pulp ''with a forklift''.]] Words cannot describe how awesome it is.
** Possibly a [[ShoutOut nod]] to Shaggy and Scooby's BigDamnHeroes moment in Scooby Doo and the Alien Invaders.
* ''WesternAnimation/{{Ben 10}}'': Grandpa Max has seven words for you:
-->"Get your claws off my grandson, Vilgax!"
* ''Film/GreenLanternEmeraldKnights'': The entire Corps is collectively moving a ''planet'' toward their enemy using all their willpower, but it's not enough. And then, who shows up via portal but the Green Lantern who "doesn't socialize": Mogo [[spoiler: who is not only a Green Lantern but a living planet. Heroes don't get much bigger than that]].
* Frequently in ''WesternAnimation/{{Thundercats 2011}}'' but most notably:
** [[DeconstructedTrope Deconstructed]] in "Omens Part One" when Lion-O, Tygra and Cheetara attempt to save some [[StockPunishment stockaded]] [[LizardFolk Lizard]] prisoners from abuse, only to turn the PowderkegCrowd of Thunderian [[{{Catfolk}} Cats]] into an AngryMob in the mood for a VigilanteExecution, triggering a brawl which Lion-O's father Claudus has to stop. He is none too pleased that his son's been protecting Lizards.
** Played straight in "Omens Part 2" during the siege of Thundera with Claudus and Tygra saved by the SuperSpeed SpeedBlitz of the Clerics, then by Lion-O toting {{Sticky Bomb}}s, when the pair are twice-surrounded by {{turncoat}} General Grune and his Lizard-manned {{Walking Tank}}s.
** And again in "The Song of the Petalars", when the cats look [[http://www.youtube.com/watch?feature=player_detailpage&v=-VjIf--5-nQ#t=364s hopelessly outnumbered and about to die]], who should arrive to say them but [[spoiler: Panthro in the Thundertank.]] Made even more awesome by the fact that he was declared as a dead hero is the opening episode.
* ''WesternAnimation/CodeLyoko'' is the epitome of this. They're five teenagers fighting against an evil AI who wants to rule the world and can virtual monsters into the real world.
** A special shout out goes to [[spoiler: Franz Hopper, who sacrifices himself to power a program to shut down XANA. Unfortunately, as of Season Five, it's a SenselessSacrifice...that is, [[NeverSayDie if it was indeed permanent]]...]]
* ''SuperFriends'' had a story where a time traveling alien was forced by the Phantom Zone prisoners to take them to Superboy's time to kill him. They are nearly successful until Superman and Green Lantern suddenly appear out of nowhere to stop them; it turns out that as soon as the alien was freed, he alerted the Super Friends about what their enemies are attempting and guided them to the proper time to intervene.
* ''Madagascar'' pulls this THREE TIMES IN A ROW to save Marty from the fossa.
** First, Gloria and Melman swing in, complete with Tarzan yell:
--> '''Melman:''' AAAAHHHHHAHAHAHHHHHHHHHHHHHHHHH!
** Then, the penguins, aiming A FLARE GUN at the fossa:
--> '''Skipper:''' Fossa Halt.
** And finally, Alex himself, though it's subverted for a second:
--> '''Alex:''' ROOOOOOOOOOOARRRRRRR! That's MY kill. MINE.
* ''WesternAnimation/TheChipmunkAdventure'' has [[spoiler:The Chipettes]] rescuing [[spoiler:The Chipmunks]] from being fed to alligators.
* In the ''WesternAnimation/BatmanTheAnimatedSeries'' episode [[Recap/BatmanTheAnimatedSeriesE25TheClockKing "The Clock King"]], Batman comes to save Mayor Hill from the DeathTrap JustInTime.
* In a ''WesternAnimation/SpongebobSquarepants'' episode, the titular sponge gets rescued from several fish competing to have him as their employee by a masked figure in a Krabby Patty suit. [[spoiler:In a Big Damn Anti-Heroes moment, it's Squidward]].
* ''WesternAnimation/CourageTheCowardlyDog'' features this a few times. Just when things look hopeless, Courage figures out how to solve things and rushes to rescue Eustace and/or Muriel from the MonsterOftheWeek.
** Amusingly enough, in the first episode it's ''Muriel'' who saves Courage in "A Night at the Katz Motel".
** [[JerkAss Eustace]] manages to save the day at least twice: in "Klub Katz", Eustace (turned into a living wrecking ball) realizes Katz has stolen his beloved armchair and flies into a rage, attacking Katz and giving Courage and Muriel time to escape; at the end of "Mission to the Sun", he flies by the sun on a passing comet and gives Muriel and Courage a ride back to Earth.
* Spike in the climax of the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode ''[[Recap/MyLittlePonyFriendshipIsMagicS4E24EquestriaGames Equestria Games]]'', quickly leaping to save the stadium from the block of ice without a second thought.
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