Big Damn Heroes: Western Animation
- In Phineas and Ferb The Movie: Across the 2nd Dimension, 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 rides a giant lawn gnome, smashing into the Mecha-Mooks 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 Mecha-Mooks. Phineas rescues Perry afterward. Finally, the kids come to their aid, 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, our Doof of all people bursts in and gives Doof-2 the model train he lost as a kid which made him competently evil, causing Doof-2 to go through a Heel-Face Turn. 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".
- South Park: Al-Qaeda of all people in "It's a Jersey Thing".
- The Van Beuren Studios cartoon shorts used this a few times;
- Subverted for laughs in "Jungle Jam"; Tom and Jerry seem like they're going to be rescued from the cannibals cornering them on the beach; but as soon as their leader sees who they're rescuing, he immediately does a 180 with the rest of the navy, leaving Tom and Jerry to wing it and swim for their lives under the fire of the cannibals spears.
- In "Rough on Rats", two of the kittens save their third sibling from an evil rat this way.
- In "Along Came A Duck", the frog saves the duck he was messing around with from drowning, as his shenanigans got the duck tangled in seaweed underwater in the first place.
- Molly Moo Cow pulls this to save Robinson Cruesoe from a tribe of cannibals in "Molly Moo Cow and Robinson Cruesoe". She swims back to the island after Robin had scared her off, and grabs all of his rifles with her tail and uses them to scare off the cannibal tribe.
- Beast Wars 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, Back from the Dead 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 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, the Dinobots (and Wheelie) arrive in Dynamic Entry, save their autobot friends and turn the sharkticons against their masters, the Quintessons.
- Avatar: The Last Airbender:
- "The Boiling Rock" has Mai saving the group from having the gondola they're in dropped into the boiling lake.
- In "Sozin's Comet": 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 Big Damn Heroes moment.
- Zuko saves Iroh from being crippled by Earthbenders early in Book 1. They then proceed to mop the floor with them.
- The Legend of Korra:
- 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.
- Tenzin's three Airbender children storm in to rescue Lin Beifong during the Equalist invasion on Air Temple Island.
- At the end of Book 2, Jinora's spirit comes to help Korra during her final showdown against Unalaq. Her spirit is what gives Korra the resolve to defeat Unalaq once and for all.
- At the end of Book 3, Jinora and all the new Airbenders are up. The Big Damn Heroes make a Big Damn Tornado to ensnare the flight-capable airbender anarchist Zaheer, who had Korra dead to rights.
- Happens here and there in Danny Phantom.
- 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 The Fairly Oddparents a few times. In fact, it's the first thing Crash Nebula is seen doing.
- The Teenage Mutant Ninja Turtles 2003 cartoon has at least two such moments:
- The first occurs in "City at War", when Raphael, who had 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 killed his master and was now trying to kill his sons, it makes sense he'd want a piece of the guy.
- Buzz Lightyear of Star Command 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 G.I. Joe movie definitely counts. So awesome that it overshadowed the rest of the film.
- From 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 The Simpsons, 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! Put down that ''hors d'œuvre''! It's time for the main course!
- In the season 3 premiere of Metalocalypse, a Corrupt Corporate Executive was trying to force Dethklok to sign a new contract advantageous to him. Nathan was going to put his signature on it when Charles Ofdensen, their thought dead manager, shows up in the doorway to stop them.
"I AM BACK MOTHERFUCKER!"
- 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 (possibly), Pickles pulls this trope off after resolving to Take a Third Option to fall off the wagon and save the band at the same time.
- In an episode of Rocky and Bullwinkle 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 Big Damn Heroes in Watership Down, 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 Justice League. Batman is falling without a parachute after ejecting from the 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 Jonny Quest. 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 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 being forced to marry the Weavil Princess. First, Heloise bursts in, demanding the wedding stop...only for her to realize 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, though the Princess runs off anyway.
- In the 1982 animated film Heidi's Song, Peter the goatherd and his animal friends crash their way into the basement as Heidi is fighting off the rats. Complete with the "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.
- Teen Titans: 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 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, Scooby-Doo gets one in episode 10 of Mystery Inc. He rescues Velma and Shaggy from a demonic robot dog by 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.
- Ben 10: Grandpa Max has seven words for you:
"Get your claws off my grandson, Vilgax!"
- Green Lantern: Emerald Knights: 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 who is not only a Green Lantern but a living planet. Heroes don't get much bigger than that.
- Frequently in Thundercats 2011 but most notably:
- Deconstructed in "Omens Part One" when Lion-O, Tygra and Cheetara attempt to save some stockaded Lizard prisoners from abuse, only to turn the Powderkeg Crowd of Thunderian Cats into an Angry Mob in the mood for a Vigilante Execution, 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 Super Speed Speed Blitz of the Clerics, then by Lion-O toting Sticky Bombs, when the pair are twice-surrounded by turncoat General Grune and his Lizard-manned Walking Tanks.
- And again in "The Song of the Petalars", when the cats look hopelessly outnumbered and about to die, who should arrive to say them but Panthro in the Thundertank. Made even more awesome by the fact that he was declared as a dead hero is the opening episode.
- Code Lyoko 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.
- Super Friends 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:
Skipper: Fossa Halt.
- Then, the penguins, aiming A FLARE GUN at the fossa:
Alex: ROOOOOOOOOOOARRRRRRR! That's MY kill. MINE.
- And finally, Alex himself, though it's subverted for a second:
- The Chipmunk Adventure has The Chipettes rescuing The Chipmunks from being fed to alligators.
- In the Batman: The Animated Series episode "The Clock King", Batman comes to save Mayor Hill from the Death Trap Just in Time.
- In a Spongebob Squarepants 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. In a Big Damn Anti-Heroes moment, it's Squidward.
- Courage the Cowardly Dog 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 Monster Ofthe Week.
- Amusingly enough, in the first episode it's Muriel who saves Courage in "A Night at the Katz Motel".
- 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 My Little Pony: Friendship Is Magic episode Equestria Games, quickly leaping to save the stadium from the block of ice without a second thought.