It's a general rule in any fighting-based anime that if the protagonist already knows how to fight by the beginning of the series then the battle against the first villain will be a complete Curb-Stomp Battle just to demonstrate their abilities.
For those and other examples:
"This was no longer a battle. It was a massacre. The results of using a mill to grind a sesame seed would yield more response. Wherever the Ionian Hetairoi rode, there was not a trace of Assassins remaining. Only a faint, faint smell of blood and some dust that was swept away remained in the air."
In a similar vein, any battle involving Gilgamesh giving a modicum of effort devolved into this.
Fate/stay night had its own share of Curbstomps as well. Archer vs Berserker stands out for being a curbstomp on both sides. Archer gave 5 curbstomps in a row, but sustained sufficient injuries doing so that when Berserker went in for round 6 it was really a lost cause, with the final victor being Berserker.
Fate/Zero was really just carrying on the tradition in Gilgamesh's case. It's shown straight up that Gilgamesh could kill any other servant(hell, could wipe out the human race) on a whim, and doesn't because its more fun that way.
In Shaman King, it happens several times when the lead Yoh Asakura obtains a new power. There is a time in which Yoh notes that if stomps on his enemies it could affect them psychologically so he spends most of the battle faking weakness to anger his enemies so that they will use all their power to attack him.
Kinda like the Tobias example mentioned below, this match is considered to be more of just a bad beat. Losing 6-2 isn't a true curbstomp since Ash did at least defeat 2 of Paul's pokemon here. Ash's Staraptor even beatout Paul's Weavile 1 on 1 here.
Earlier, Paul got beaten twice, first by Cynthia 4-0 (full six-on-six battle; Paul folded after his strongest Pokémon bought it) and then by Brandon, without being able to take down even one of their Pokémon.
Ash's first round in the Indigo League was a total washout in Ash's favor using Krabby (who evolved into Kingler midfight) alone. This was also Krabby's first direct fight under Ash's command.
Ash's first battle with Whitney was in Whitney's favor, with her Miltank knocking out all of Ash's pokemon.
Although ash did take down Whitney's other 2 pokemon first, so it was only a 3-2 victory.
In the Hoenn arc, Gym Leader Wattson was completely owned by an accidentally supercharged Pikachu who flattened each of his 'mons in one move something only Plot Wall Tobias is implied to have done, probably as an up yours to everyone one moaning about Pikachu not constantly getting stronger by showing how boreing it would be. Ash rightfully wanted to give the badge back afterward—while en route to Petalberg to challenge Norman, they have a friendly one on one rematch with Wattson winning.
Crasher Wake was beaten by Ash 3-0.
Any time Ash fights any League official of Elite rank or higher, he is going to get wiped without exception. Frontier Brains don't count.
Ash's battle against Tobias, which was another 6-2 loss for Ash. In all fairness, he was facing a Darkrai and Latios, and he was the only one to actually K.O. both of them. Everyone else failed to beat even one.
Team Rocket obviously fall victim to this a lot, especially if Meowth is involved. Perhaps most notable is his first attempted official faceoff against Pikachu in Who Gets To Keep Togepi, the battle is opened with an epic staredown between the two along with an emotional soliloquy from Meowth how he will fight with all his strength to earn ownership of Togepi, before Pikachu pokes him almost mockingly with the tip of his tail and thundershocks him into a smoking wreck. One hit KO.
In the 12th movie, Arceus takes on Dialga, Palkia and Giratina. At the same time. Without breaking a sweat.
Well it is Arceus. In a flashback scene in the same movie, it defeated a whole army of Pokemon.
In Pokémon: Zoroark: Master of Illusions, Zoroark, during a Roaring Rampage of Revenge trying to get her beloved son back, happens to find Goon, The Dragon and one of the men behind her son's kidnapping, fighting Dawn and Brock (who are being seriously overwhelmed). His two Scizor charge her and promptly get KO'd with one Night Slash each and then Goon and all his Ninjask are wiped out with a single attack. To be fair, he was up against an Action Mom in full Mama Bear mode.
ASH actually dished one out in an early Johto episode as he faced then-new trainer Casey's fledgling team of Pidgey, Rattata, and Chikorita with CHARIZARD. Splat. (Charizard didn't even have to use any real Pokemon attacks to beat the first two, it simply blew on Pidgey to knock it out, and knocked Rattata down with a chest-bump.)
The battle with Burgh got two—one for each trainer. On one hand, Burgh beat Tepig with Dwebble, ( mostly by spamming protect) about three minutes into the battle... but on the other hand, once Pikachu got free of stringshot, Leavanny didn't stand a ghost of a chance, despite the fact that nobody had a type advantage.
Cilan gave one of these to Burgundy when she challenged him at the Striaton Gym, and gave her another one when she challenged him to a rematch. Dwebble defeated her Dewott without getting a scratch, and Pansage was toying with her Sawsbuck before finishing it off with a Solar Beam.
Bianca experienced one of these at the hands of Elesa, who plowed through all three of her Pokemon with her Zebstrika. Pignite was the only one of Bianca's Pokemon that put up a somewhat decent fight.
In the Best Wishes series, Ash finally meets Giovanni... and Persian kicks Pikachu's ass with one attack.
Well it hit Pikachu and knocked it back letting him and Ash get captured, but Pikachu didn't faint or anything.
In Pokemon Kyurem Vs The Sword Of Justice, Keldeo gets curb stomped his first time fighting Kyurem. Once he learns to use his sword, he still loses (and in fact surrenders), but not as badly.
An Early episode of the Pokemon saga "The Path to the Pokemon League" has this trope done...TWICE
Ash takes on a minor character named AJ and his Sandshrew. Despite his Pidgeotto and Butterfree having a type advantage over Sandshrew(Flying types are immune to ground types and bug types are resistant, plus flying types really wreck into them), Sandshrew wastes no time in beating down both Pokemon and winning the fight.
Later on, after Team Rocket insults his Pokemon, AJ challenges them to a Pokemon Battle. Same Sandshrew, different opponents(Koffing, Ekans and even Meowth). Only this time, Sandshrew has the type advantage and manages to lay waste to them, wrapping the fight up with a Fissure Strike. That was more than enough for the 3 challenging Pokemon to forfeit the fight.
A literal example in Soul Eater: Black*Star is fighting Death the Kid as a sort of grudge match. As Black*Star has lost all his confidence in his ability to win battles, he performs poorly, and stands there as Kid ninja flips around, eventually beating him to the ground. When he is lying motionless, Kid sees his hand move, and curbstomps his head into the ground.
Not too literal of an example. The fight was pretty even up until the end.
Frieza's second appearance in Dragon Ball Z. After surviving Namek's destruction and having been put together again as a cyborg, he arrives to Earth with his equally badass father, and the good guys are trembling before his might. What happens next? A Super Saiyan from the future appears and obliterates them both.
Said Kid from the Future eventually ends up returning to his own time, where he proceeds to kill Androids 17 and 18 and Cell in one episode without breaking a sweat.
Most of Goku's Big Damn Hero/Look What I Can Do Now moments in the series are like this, most notably when he came back from the dead to pummel Nappa after he killed Piccolo and nearly killed Krillin and Gohan, and later when he showed up and beat Recoome in a single blow after Recoome had hammered Vegeta, Gohan, and Krillin for the last three episodes.
Vegito (the fused form of Goku and Vegeta) versus Buu after having absorbed a powered-up Gohan, Piccolo, Trunks and Goten definitely counts. A fight between the two most powerful characters in the entire Dragonball canon...and the former makes the latter look like a total pansy.
Taken to ludicrous degrees in GT's Baby arc - where Kid Goku (untransformed and at a third his normal size and strength) takes down Gohan and Goten (both at SSJ, possessed by Baby and actively trying to kill him) without breaking a sweat.
The Super 17 Saga was even WORSE. It featured nearly every villain the characters had ever faced and ALL OF THEM were killed in one hit. A similar thing happened in the 12th movie (although Frieza is the only one who is shown getting killed, again in one hit). Seems every Villain Forgot to Level Grind.
Vegeta also gets plenty of these, notably his fights against Guldo, Frieza's best Elite Mooks, Android #19, Cell (which is reversed once he allows Cell to reach "perfect" form), and Pui Pui. Especially Pui Pui. That last one was in ten times Earth's gravity, and Vegeta didn't even have to go Super Saiyan to beat him.
Vegeta to Android 19: "Let me ask you: does a machine like yourself ever experience fear?"
While they weren't beaten by him per se, Tien and Chaiotzu both sacrificed their lives against Nappa, giving the greatest amount of energy they had in their lives so far. Neither could they so much as cause any visible damage to him.
The role is reversed on the main cast when they fight Broly in the 8th movie. Throughout their entire fight, none of the heroes are able to even scratch Broly, literally. He is only injured with the last punch of the movie. Broly even remained unscathed to a pointblank Kame-hame-ha. Vegeta, for a good portion of the fight, remains on the sidelines, knowing that anything they did to Broly would be pointless.
Vegeta: "We're mere grunts fighting an entire army."
There's also the very beginning of Super Saiyan 2 Gohan fighting Cell—Gohan only landed two punches (and a kamehameha) on Cell, but they were so insanely damaging that they forced him out of his final form. For that matter, even though Cell was much stronger after he blew himself up and killed Goku, essentially becoming Super Saiyan 2 himself, he would likely still have had no chance of defeating Gohan if ONLY Vegeta's actions didn't result in getting Gohan severely damaged before the final showdown.
Birisu vs Goku in movie Battle of the Gods. Birisu the God of Destruction effortlessly beats the Z warriors, including Good Buu and Ultimate Gohan, using only chopsticks and basic attacks. That's after he nearly killed SSJ3 Goku in 1 blow.
Don't think the original Dragon Ball was devoid of these either. Kid Goku took down an overconfident competitor with three quick elbows to the stomach. The scene played out almost exactly the same way he later trounced Recoome.
Kid Goku vs Piccolo Daimao/ Demon King Piccolo in the original Dragon Ball. At first Goku floors the Namek-back-then-Satan-surogate, but the latter stands up,The Coats Are Off, and then simply DESTROYS! the protagonist, beating him to a brink of death, even doing a No Sell to Goku`s Kamehameha in the process.
Darker Than Black: Louis flings Hei into the air with his ability to manipulate gravity. Hei comes right back with his Grappling-Hook Pistol, then strangles him with a wire, smashes his already broken fingers, and electrocutes him to death.
The episode immediately after that had the fight that began with one of the most recursively-subvertedDiving Saves in all of fiction. Thinking he's won, the guy who'd just emptied his gun into Hei's back looks up when he hears a voice. Unfortunately for him, the voice is Mao, pointing out that that Badass Longcoat of his? It's bulletproof. Cue complete and utter knife, choke wire, and electricity-induced pwnage.
Alen: 'I can't believe Louie got himself killed by this guy (Hei). I thought he would put up more of a fight."
Mao:(popping up from nowhere) "He will; and when he does, you might want to keep in mind: Hei doesn't wear that coat as a fashion statement." (Alen whirls around) "It's bulletproof."
Hei does this all the time. There's a reason he's called "The Black Shinigami." One of the worst (best?) was when he went up against a bunch of perfectly normal, non-clued-in Yakuza who made the rather fatal mistake of thinking a Doll was just another type of smuggled good. He took out half the gang without even using his powers and electrocuted one through a car. Although the stompingness of this was significantly lowered when their much more competent boss managed to sneak around the car in such a way as to point a gun point-blank at his head.
Happens often in Saint Seiya. Especially if you're a gold saint facing lesser saints... or one of the main protagonists. Doubly so if your name is Phoenix Ikki. Your opponents may as well set themselves on fire and jump off the highest cliff in advance.
Naruto's latest Big Bad, Madara Uchiha, being casually superior to...everyone and everything in the story demonstrates this superiority by taking on the five Kages (heretofore unstoppable themselves) with contemptuous ease. He doesn't even bother killing them. He knocks them around and then buggers off to find Naruto.
Early in Naruto, Rock Lee kicks the crap out of the two main characters in his first appearance.
Tenten is beaten by Temari so effortlessly that the manga doesn't even bother showing it. When the anime does show it you see that it was just Temari using her wind abilities to render all of Tenten's projectiles useless and knock her out with a single attack.
Sasuke ends up on the receiving end of a curbstomp by his older brother Itachi, who moments beforehand stomped Kurenai, Kakashi, and Asuma.
Sasuke and his entire team get another from Killer B. Killer B didn't just beat Sasuke, he killed Sasuke twice. Only a couple of Ass Pulls saved him.
Pain/Nagato more-or-less stomped Konoha into the ground and the only person able to stand up against him was the main character.
Sasuke assaults the Kage Summit and gets thoroughly trounced by the five Kage present, surviving thanks to a Deus ex Machina from Tobi.
After getting revitalized during Edo Tensei, a younger Nagato proceeds to capture the main character and attempt to steal his soul.
Second Mizukage vs Fourth Division. Even after telling them how to defeat him, they can't figure out his technique. He even gripes "...guess...I'm too strong."
Kakashi and Gai are about to be nuked off the face of the earth by Five Biju. Naruto, who just got Kurama's trust then powers up to...Biju Mode. Bats their Bijudama away like flies and kicks the asses of all five Biju like its child's play. Even pile-driving one. And then in the resulting Beam-O-War? He effortlessly overpowers their Bijudama with his own *which is of the same size and power* and frees them from Obito's control simultaneously.
The first match between Ichigo and Grimmjow was extremely one-sided; the latter owned the former with little to no effort and didn't get hurt at all. Though Grimmjow did feel to need to block Ichigo's Getsuga Tensho.
Ryuuken Ishida is capable of sparring his son to breathless exhaustion without so much as breaking a sweat himself...and this includes after he upgrades Uryuu's Quincy powers.
It's also worth noting that the battle between Mayuri and Szayel was ultimately decided by who was more nightmarishly prepared. The two practically took turns releasing horrors from their bag of tricks until Szayel ran out.
Soifon allowed herself to be Willfully Weak against Ggio just to test his abilities. When she decided she'd seen enough, she one-shotted him (well, two-shotted him technically, but it happened so fast it felt like a one-shot to him).
Charlotte had thrown Yumichika around like a ragdoll because his strength and speed were so great. Then Yumichika revealed he had been Willfully Weak because he didn't want his allies to notice what he's capable of: instantly one-shotting Charlotte to death, as it turned out.
Ichigo's fight with Ulquiorra (both the first and second) resulted in Ulquiorra calmlyNo Selling his most powerful attacks before beating the snot out of him. The first fight ended with Ulquiorra stabbing him through the chest. In the second fight, Ulquiorra uses both of his One-Winged Angel forms and then blows a hole through Ichigo with a Cero. Unfortunately for Ulquiorra, Ichigo's Super-Powered Evil Side takes over and returns the favour with interest.
During Ichigo's fight with Nnoitra, whom he struggled against to begin with, Nnoitra gets bored and tags out with his Fraccion, Tesla...who immediately goes into his Ressurecion form and delivers a brutalNo-Holds-Barred Beatdown to Ichigo. In the anime, you can hear the bones in his arm break.
Then, after this, Kenpachi shows up. Tesla goes to attack him, and is cut down before he can even land a punch.
Every fight between Aizen and ANYONE. The only person in the entire series that Aizen couldn't casually curbstomp was Yamamoto (even after depriving him of the use of his zanpakuto), but Aizen took him out with strategy rather than brute force. Even his last battle against Ichigo is a curb-stomp battle, except Ichigo is the one doing the curb-stomping.
Remember when Aizen was outed as the Big Bad and Hitsugaya confronted him? Poor Hitsugaya.
Remember when Aizen stopped Ichigo's bankai with one finger?
Remember when Aizen stopped Sajin Komamura with a level 90 Kido spell?
In chapter 390, we have Aizen pitted against Hitsugaya, Komamura, Rose, and Love. Komamura gets curbed in about two pages. Rose and Love get curbed in the next chapter. In chapter 391, after curbing Rose and Love, he proceeds to curb Lisa in 2 pages. After that, he fights against Sui Feng, Hitsugaya, Shunsui, and Shinji and was seemingly killed by Hitsugaya. LOL NO he substituted with Hinamori. In chapter 392, Sui Feng, Shunsui, Hitsugaya, and Shinji are curbed in a page.
All of Yamamoto's fights were this.
After Ayon easily defeats five lieutenants, it gets casually destroyed by Yamamoto. Yamamoto then proceeds to one hit Emilou Apacci, Franceska Mila Rose and Cyan Sung-Sun and doesn't even bother to kill them.
Even though Wonderweiss sealed Yamamoto's zanpukto, Yamamoto simply proceeds to obliterate him with his bare fists.
Yamamoto gets his revenge on Driscoll Berci, the Stern Ritter who killed Chōjirō Sasakibe, by instantly incinerating him.
Later, Yamamoto then proceeds to incinerate three other Stern Ritter with extreme ease. Note that all Stern Ritters are about as powerful as captains, if not more powerful. One of the Stern Ritter, Äs Nödt, also stole Byakuya's Bankai and curb-stomped Byakuya with it. But obviously they were no match for Old Man Genocide.
Yamamoto also gutted the decoy leader of the Vandenreich with ease.
However, Yamamoto himself gets curb-stomped by Yhwach. The real leader of the Vandenreich, Yhwach, strolls in after the decoy's death, steals Yamamoto's Bankai, and then proceeds to kill him with one hit. After killing Yamamoto, he nukes the corpse just to be sure.
In fact, the very first fight in the series, between Ichigo and some thugs disrespecting a memorial site, was quite literally this—Ichigo soundly thrashing the lot of them and stomping on them repeatedly.
At the beginning of the final arc, 116 shinigami were killed in 182 seconds (one of them being Yamamoto's Number Two, Sasakibe). The 12th division's report of the massacre concludes that the evidence currently suggests they were killed by a single individual.
The entire Vandenreich invasion was this. Thousands of shinigami were killed, including their commander, and the enemy only received five fatalities.
The battle between Byakuya and As Nodt. Byakuya fails to land a single hit on him, loses his bankai, falls completely under Nodt's power, and is then shredded to pieces by his own Bankai.
Most recently in Chapter 505, Kenpachi Zaraki receives this from the boss of the Vandenreich. Yeah, we're not joking. The new Big Bad just effortlessly took out one of the biggest baddasses in Bleach history.
It's revealed in Chapter 510 that the guy who beat him was merely a fake copying the powers of the big bad. After Yamamoto guts the decoy, the real leader calmly strolls in and kills Yamamoto with one strike.
In chapter 512, a Sternritter called Shaz Domino was killing the Shinigami Research and Development Institute people when Ichigo finally arrived in Soul Society. Shaz Domino was killed before he even managed to tell Ichigo his power.
In chapter 524, Unohana catches Zaraki's blade with one hand, flicks it aside, and stabs him through the neck all without breaking a sweat.
Bleach is fast becoming a curb stomping carnival.
First, there's Hitsugaya who was getting curb stomped by Bazz-B but he ends up curb stomping Cang Du after he got his bankai back. Despite curb stomping Cang Du, he was curb stomped so badly by Bazz-B he ends up collapsing anyways after beating Cang Du.
Before that, Cang Du curb stomped Matsumoto off screen. Seriously, that's how badly she got owned.
Then there's Sui Feng. BG 9 shrugged off her Mukyū Shunkō and then proceeds to curb stomp her. After she gets her bankai back, she curb stomps him by blowing him up.
Bambietta one shots Shinji with her explosion power. She, in turn, gets completely curbed by Sajin Komamura's new powered up bankai as well as his temporary ability to not die. It's quite funny since she's the first female Sternritter to get defeated despite being the female Sternritters' leader. She even makes a comment about why is it that she's the first to lose.
And the festival continues! In chapter 559, Ikkaku, Yumichika, and Shuhei were also curb-stomped off screen by the lucha libre Sternritter "S", Mask De Masculine.
And as seen above, a literal curb stomping battle takes place when the Gurren Lagann is under heavy fire. It robotechs through a few blasts before getting hit by one, which only serves to light it on fire, and then it's sent right for Viral's mech, which proceeds to get all the force a burning giant robot MAN ON FIREBLAZING CHARIOT KICKING you can get. Viral literally slides through the deck for a good third of it after the kick.
Post-Timeskip is pretty much this. First, Gurren Lagann vs. thousands of Mugann: Gurren Lagann wins by curbstomping reality and creating several large drills all over its frame. Later, Gurren Lagann vs. more Mugann in space: GL wins by being badass enough and killing them all by shouting a battle cry. Finally, Chouginga Gurren Lagann... Need I say more? "The spirits of our friends are etched into this machine's frame. Unmatched in Heaven and Earth. One machine, equal to the Gods. Chouginga Gurren Lagann! I'll show you...the power...of HUMANKIND!" pretty much sums up the battle it fights. A short recap: It cuts a large space fortress Mugann throwing planets at CGL in half with a pair of sunglasses, shoots every point in space and time at the same time, uses the sunglasses as a boomerang and takes one drill on its shoulder and puts on top of the other drill and holds the double-drill on its hand and drills through more giant things.
The final fight in Full Metal Panic!! The Second Raid. Gates' supposed abilities became an Informed Ability given how easily Sousuke worked him and his entire team over. Bear in mind that it was none other than Gauron who, in stating that Gates led a team of lambda-equipped mecha that were intended to hunt down renegades, implied that Gates was an excellent pilot.
The end result of Gundam SEED Destiny is the final battle where the good guys win a completely flawless victory where none of their three main Humongous Mecha took a scratch. This also happened in several earlier battles with Kira taking on both sides at once and easily defeating them all. Shinn, Kira's Anti-Villain/intended protagonist rival also engages in one of these whenever he battles a non-Gundam enemy, and one could argue that his, Rey, and Luna's battle with the Destroys at Heaven's Base is another example.
In Destiny (and this is one of the many many reasons it gets hate) is that ALL battles are curbstomps after the first 5 or so eps. The only difference is whether Kira or Shinn is doing the stomping. All grunts are totally helpless in the face of Gundam's and Kira and Shinn take turns totally overpowering the other. The only thing in mid to late Destiny that remotely resembles an even fight is the Orb invasion, where both sides are shown to be competent, and Kira and Shinn fight to a draw.
The final battle was taken to the extreme in Super Robot Wars where Shinn joins the Three Ships Alliance to fight ZAFT leaving Rey as the only big boss. Even more, Rey can be persuaded to give up and join their rivals. Not even Banpresto is having mercy.
The first season of Gundam 00 is a fascinating deconstruction of this trope. Possibly constructed in response to the above occurrence in Gundam Seed Destiny. Initially, the Gundams totally dominate their opponents through sheer technological superiority. What makes this interesting is how the series explores the ways in which the various world powers arrayed against the Gundams try to compensate for this problem. This progresses to the point where the various military forces of the world successfully drive the Gundams into a corner, even though they are still technologically outmatched (it helps that they have numbers though). And finally, thanks to a traitor from Celestial Being, the technology gap is closed, which results in the Gundams struggling against Mooks.
A more traditional version occurs in the final episode, pairing Healing Care against Doublelujah, Allelujah and Hallelujah working together. Long story short, at NO point in the battle does Healing Care pose even a significant threat, as Doublelujah jets around the battlefield, casually lopping off limbs and tearing away ejection systems like this is just another day at the office. The only solid blow Healing lands is right before she dies, because Doublelujah RAMS her with Arios and cuts her in half. She manages to stab Arios and do superficial damage. Of course, Ribbons, being the ass he is, immediately takes Arios out in the span of three seconds with two Fangs.
It should be noted in the previous example, the Arios was already severely damaged having fought its previous battle and had lost limbs before tearing Healing Care apart.
In the movie, this is actually subverted, in the sense that the ELS have numbers, while Earth and Celestial Being has the technological advantage. The fact that the first battle against the ELS cost Earth a Mobile Armor with 154 GN Fangs does not make anything better. In the end, though, Zabanya can easily take out a large portion of the ELS quickly, until they start changing tactics after having assimilated GN Drive technology. Harute in Marute Mode also does a fair deal of killing, considering that it is a Mobile Suit designed for Hallelujah to use (not Allelujah) The fact that both personalities are combined as well as having Marie or Soma present in the cockpit does not make things better for the ELS... Then the SoulBraves show up and help kicking ass. And finally, 00 Qan[T] (Double-O Quanta) launches and uses its Quantum Sword, the only attack it ever actually uses, and even then, it is used as a high-tech nut-cracker, after which 00 Qan[T] is used to end the Curb Stomp Battle, by being used as a giant high-tech mobile phone.
Note that despite all the ELS ass getting kicked all over the place by the heroes, they were still curb-stomping Earth's forces. Their numbers are so overwhelming that by the end of the fight, over 70% of Earth's military has been wiped out or assimilated.
The Nazi vampire assault on Hellsing manor goes this way once the vampires get into close combat, although it is justified by vampires being that much faster and overall better than the normal humans and one weak vampire defending. The Nazis vampires then get the tables turned on them when Seras drinks Pip's blood, awakens more of her power and proceeds to mop the floor with them without much more trouble.
Any fight in which Alucard is involved either starts up as this right off the bat (sometimes after he offers the victims a Hope Spot by letting them shoot him up first), or once the next level of his powers is unlocked. Even after Alucard is seemingly killed, releasing his last level causes him to come back to (un)life and effortlessly curbstomp the Big Bad.
The definitive example is Luffy vs Bellamy, a match so one-sided that it's like watching a fight between a lion and a deer. Luffy initially refused to fight Bellamy, out of a desire not to cause trouble. Then Bellamy learned of Luffy's bounty, and assumed it was fake like an idiot. Thenhe stole from Luffy's friends. Luffy one-shotted his sorry ass.
With a single, unstretched punch, we might add; Bellamy showed off his Devil Fruit powers throughout the whole "fight", but he never found out that Luffy even had a Devil Fruit power.
Zoro vs Mihawk. It was pretty much a given, though he displayed enough spirit to earn the Warlord's respect.
The first was Luffy vs. Alvida, which consisted of Luffy letting her hit him with her mace to no effect and then taking her down in one blow. Second was Luffy vs. Ax-Hand Morgan, during which Luffy effortlessly dodged his attacks before striking him down.
Though technically, he wasn't finished off until Zoro stepped in.
Usopp vs Mr. 2 Bon Clay, which ended so quickly it was never even shown.
Wiper vs Shura.
Zoro vs T-Bone.
Nico Robin vs Tashigi,Pell, Yama and Spandam...In general it's an extremely bad idea to try and fight Nico Robin unless you outclass her by a wide margin
Eneru vs anyone who isn't Luffy tends to turn into this, though Wiper made a creditable attempt.
Luffy vs Blueno after he uses Gear Second.
On a similar note, Boa Sandersonia and Boa Marigold were almost doing this to Luffy...until he stopped holding back, at which point they didn't have a prayer of winning.
Kumadori's fight with Monster Point Chopper ended with the latter grabbing his head and flinging him beyond the next building.
Anything involving Chief Warden Magellan of Impel Down. Fighting Luffy? Matter of minutes. Facing the thousand strong army of criminals? The army runs away. The series' Big Bad and his crew? Matter of seconds. It should be mentioned that his power is generating vast amounts of poison, which Heroic Resolve does little to help against.
It even applies against him. After Blackbeard broke into Level 6 and freed multiple prisoners, the ones he didn't recruit rampaged through Impel Down and beat Magellan near death.
Luffy pulls another against Coby during Marineford. It looks like his Training from Hell would pay off, and he'd be able to a least slow down Luffy's Foe-Tossing Charge. He does Soru and gets a Gum Gum Bullet to the face before he's even finished moving. Luffy gave him no acknowledgment beyond saying his name.
Luffy vs "Hero" Garp, finished off in one blow. Though it's obvious Garp threw the fight.
Luffy's first fight against Crocodile, Crocodile just stood still for three minutes letting Luffy punch him, and after those three minutes were up, impaled him.
Sanji gets owned by Okama Queen Ivankov in less than a panel while trying to steal a ship.
Post-timeskip, damn! Pacifista vs. Straw Hats rematch. Luffy one-shots the first. Sanji and Zoro each one-shot the second at the same time. It wouldn't have taken both their attacks, either, they were just trying to one-up each other.
The post-timeskip Zoro vs Hody Jones the Fishman, Big Bad of the Fishman Island Arc. Zoro won. With ONE HIT. UNDERWATER.
And then Luffy vs Hody Jones, first on dry land, then underwater. Luffy basically trounces Hody without any real effort. When the fight moves underwater, Luffy has a slight disadvantage because of the Devil Fruit's weakness in water, but he still pounds Hody every time the Fishman gets near him. Hody gets ONE hit in, and still gets sent flying.
During the Whiskey Peak arc, Mr. 5 and Miss Valentine are beaten in this fashion by Luffy and Zoro, while the latter two were not even interested in fighting them because they were fighting each other.
Straw Hats vs Hody's 100,000 strong crew. Total and complete beatdown. Luffy took out 50,000with one burst of Haki as the opening volley. It just gets progressively worse for the poor saps after that.
During the same battle all of Hody's top henchmen are beaten effortlessly (emphasis on effortlessly) by the Straw Hats.
Probably the most hilarious is Hammond vs. Robin. The former had already experienced one by Luffy's hands who just one-shoted him without much effort. When he reappears again, he's still recovering with bandages all over his body and wearing a neckbrace Robin frees the slaves that were carrying him as his "human tank" who toss his ass to the ground. He then decides to pick a fight with Robin by shooting a net at her. Not only is it not really Robin (due to her new clone powers) but she makes a copy of herself to bind his neck while she binds his legs and practically twists his spine. Ouch.
Sanji vs Kalifa. Admittedly, Sanji suffers from a severe case of Wouldn't Hit a Girl. And boy, does that trope get Deconstructed with Kalifa beating the ever loving snot out of him.
And the silly thing is, if that wasn't the case, he would've easily beat her too, as he outmatched her in speed and strength.
A series of curb-stomps are the fights involving the Impostor Straw Hats. The first one featured the fake Luffy, Nami and Sogeking trying and forcing the real Nami (who they hadn't recognized) only to get casually defeated by Usopp and then thunderbolted by Nami. Then Fake Luffy and most of his gang picked a fight with Luffy (who at least was wearing a Paper-Thin Disguise), only to get knocked out by a burst of Haki. Finally there's the one between the Impostors and their recruits and the Marines, who had come to catch Luffy because they had heard of the Impostors recruiting and, believing them the real deal, had brought three times the amount of force they had needed to match the real ones pre-timeskip: Science Captain Sentomaru (who, pre-timeskip, could match the entire crew alone) mauled Fake Luffy, called him trash and an idiot for faking to be Luffy without expecting the Marines to come and then had a Pacifista reveal his true identity to everyone present while calling the recruits idiots for buying the lie.
Caribou, who, after meeting the real Straw Hats, is consistently curb-stomped. The first time it was Luffy, then it was Pekoms, and then, in the new mini-series, Jinbei. This is the part where it becomes pretty clear that he has no chance of even lasting a week in the New World.
Pretty much any time "Dark King" Silvers Rayleigh shows up, if you're beneath the Admirals in power, then you better prepare to get curbstomped. In his first appearance, he uses Haki to drop the man beating on Cammi while imprisoned. Then, he follows it up by casually dropping pretty much everyone but the Supernova eleven and their crews in a crowded Slave Shop with Haki. And Post-timeskip, when the Straw Hats are escaping from the marines who'd showed up due to the Impostor's recruiting, he draws a line in the dirt and tells them they're not crossing it. They don't.
This seems to be the norm for Trafalgar Law and Vice-Admiral Vergo. Apparently, before the Time Skip, Law managed to somehow infuriate Vergo to the point where the man used his Haki to armor up his entire body and handed him such a brutal beating that it left Law both traumatized and terrified of Vergo. Post-Time Skip, it seems the situation has not changed, especially when Vergo is in possession of Law's heart. However, once Smoker got Law his heart back, he manages to beat Vergo in that same form with one blow.
In Chapter 687, Zoro defeats Monet in a single blow, and he was not even using his full strength. In fact, the latter loses from the sheer terror of realising that she would have died had he used his full powers. That, and Tashigi dealing the finishing blow.
In Code:Breaker. After Takatsu Aoba is revealed as the Revenger, she attacks Ogami and effortlessly defeats him without even using her special power.
Though after the Re-Code arc, expect one every chapter from a new character until one of the main characters discover an Eleventh Hour Superpower.
The final fight of Magical Girl Lyrical Nanoha A's against the Book of Darkness' defence system consists of all nine of the series' major characters (And Zafira!) using all of their most powerful attacks, and disrupting any response from the enemy.
The first fight between the heroes and the Wolkenritter in A's is very one-sided. It pretty much consists of the Wolkenritter easily outmaneuvering and overpowering the protagonists and generally kicking them around like soccer balls.
In The Movie 2nd A's, the Wolkenritter curb-stomp them even faster as they don't give them any chance to help each other. Not only that, Nanoha & Co. have a bigger lost than in the original A's series.
The Shamal and Zafira vs. Otto battle in Striker(s) was a Curb-Stomp Battle with Otto only managing one ultimately futile attempt to escape. This was in itself a rematch for an earlier Curb-Stomp Battle where Otto and Deed send both of them to the hospital.
When Nanoha closes in on Dieci's position in the Saint Cradle, it looks as though Dieci will be able to put up a fight... until Nanoha nullifies her attack and knocks her down in a single shot. And to add insult to injury, they were inside a powerful Anti-Magic field that weakened Nanoha but had no effect on Dieci.
Code Geass, apparently taking a lesson from the battles in the middle of Gundam SEED Destiny, has the battle where two of the elite Knights of the Round are killed in seconds by Suzaku and his souped-up Lancelot, followed by him disabling a third and then killing the supposedly best fighter Britannia had to offer about a minute later. A lot of people were not happy.
Kallen pulls the same kind of trick after stealing back the Guren S.E.I.T.E.N. during the Second Battle of Tokyo. For one reason or another, though, the same people were not nearly as annoyed (possibly because her main victim was a Blood Knight psychopath who basically lived on the other side of the Moral Event Horizon).
GaoGaiGar's fight against EI-14. By the time the actual fight starts, it turns into an eighty second demonstration of why you never bring a Real Robot knife to a Super Robot fight.
Also GaoFighGar's fight with Gimlet Emperuer in the first episode of FINAL. Literally everything Gimlet tries to do fails in spectacular fashion, most notably his "Colossal Combustible", which was supposed to...well, actually, its function is never revealed, as the attack is interrupted by the mech being utterly demolished by a Broken Phantom.
The first battle in Vinland Saga, with the Vikings against Franks, was one-sided to say the least. By the time their Frank allies had breached the walls all of the defenders had been slaughtered, the fight was so quick it left enough time for Askeladd to abscond with the loot. The only Viking casualty was one man, killed at the start of the battle, from a crossbow.
As proof that Tropes Are Not Bad: Ramenman. The biggest Ensemble Dark Horse in the original series, Ramenman had the prestigious fame of defeating a very powerful opponent in thirty-seconds in the Throne arc. The nature of the battle, along with the music, made it much more a Crowning Moment of Awesome for him. To put it in context, Kinnikuman's team is down to its last two members of its team, whereas Kinnikuman Zebra has only lost one member of his five-man team. Ramenman shows up and demolishes his opponent after a brief struggle, partly to show that the heroes can win. He goes on to defeat Zebra's next subordinate before succumbing to his injuries, leaving both teams with two men left.
Another fine example from Ramenman is his battle with Brocken, Jr. Brocken, set on revenge for his father Brockeman, controls the fight from the beginning and brutally pummels Ramenman up until the moment Brocken tries to use Ramenman's own Camel Clutch against him. At that moment, Ramenman simply asks "Is that all?" and completely turns the fight around, winning handily.
The match between Super Phoenix's and Bigbody's teams went this way too: Mammothman takes down all of Bigbody's teammates single-handed, defeating the first two in less than a second, ripping the third's body off his head, and fighting the fourth to a draw only because Super Phoenix wanted to beat Bigbody personally...which he did. It went the same way as the rest of the match.
Hiei curbstomps many of his opponents in YuYu Hakusho, defeating them very quickly and taking few injuries in the process, notably with Seiryu, Makintaro, and Hagiri. In some cases, however, like Zeru and Bui, he does so at considerable personal cost, but even then, they hardly put up more than token resistance.
Can't forget Yusuke, can we? Probably the most fist-pumpingly satisfying one is Yusuke vs. Bakken during the Dark Tournament. After Bakken just finished delivering a No-Holds-Barred Beatdown to an unconscious Kurama, it's Yusuke's turn. Other than a token resistance involving weaponized sweat, Yusuke pretty much destroys Bakken unopposed, and reduces him to begging for mercy before the fight's over.
Kurama also had one against the Elder Toguro. He has complete body manipulation, regeneration, can read minds. The fight lasted half an episode, But was technically over the first minute when Kurama planted a seed in Gourmet's head.
In the beginning last arc of the story, Yusuke, pissed off at his demonic ancestor, Raizen for interrupting his fight with Sensui, decides to try and fight him. Raizen shows just how he became king of 1/3 of Makai by nearly killing Yusuke without even moving. Said character happens to be dying from centuries of starvation. Seems like asskicking runs in the family.
In the preliminaries for the final tournament, the roughly four dozen other contestants in Yusuke's bracket decide to take him down first, as he's clearly the greatest threat. Yusuke almost immediately sends them all flying out of the ring, disqualifying them and advancing to the next round.
Another fight during the Makai Unification Tournament basically consisted of Yomi nullifying every single offensive attempt by his son Shura, then beating the piss out of his own son and threatening to kill him if he doesn't stand down.
Pretty much every fight Inner Moka gets into in Rosario + Vampire, especially in the first "season". The fights basically all follow the same formula: weak Outer Moka gets dominated by the Monster of the Week, Tsukune removes Moka's rosario, Outer Moka curbstomps Monster of the Week. Although as the series goes on, she and Ghoul Tsukune have to struggle more and more as the opponents they face are much more skilled than the random students and corrupt teachers they fight in the earlier chapters. In one recent case, Inner Moka actually had to fight an enemy who's clearly stronger than she is, her older sister, Kahlua.
Ku:Nel Sanders utterly trashing Kotaro during Mahou Sensei Negima!'s Tournament Arc. Especially shocking as Kotaro was The Rival, and there was a good amount of buildup to a rematch with Negi in the final. Then Sanders appears of of nowhere and beats the crap out of him the 2nd round. Of course, Sanders does turn out to be rather important...
Fight between Negi and Ariadne Knights lead by Emily in the recent chapters. They are supposed to be quite good fighters but just can't land a hit on Negi who doesn't even have to use his Magia Erebea. And Negi is going out of his way to avoid hurting them.
Fake (Shiori) Asuna getting utterly curbstomped by a single demon, after her sword failed to work.
ANY time that Eva appears. The best example probably being the fight with Setsuna (even if Setsuna won at the end, it wasn't by being in any way a better fighter).
Generally speaking there are two levels of fighters in Negima. Those at the level of Ala Rubra (Nagi, Rakan, Ku:Nel, Takahata, Godel, Evangeline, Fate and Negi), and those that aren't. When someone at the level of Ala Rubra fights those that aren't, it goes badly for the latter.
And in the Chapter 306. Even an Ala Rubra level fighter, Dynamis, was totally Curb stomped by Demon Negi.
Then there's Ku Fei, who, as the captain of the Chinese Martial Arts Club, gets challenged on the way to school every day in what always ends as a Curb Stomp Battle of her opponents.
And when Evangeline goes all out, she curb stomps all of Cosmo Entelechia except the Lifemaker with A SINGLE SPELL!
Magic world arc final brings it to another level with Lifemaker stomping Rakan, Eva and the rest of Ala Rubra (those still alive and present that is) in span of three pages, only to be one-shotted by Negi and Asuna Combination Attack next chapter.
The final battle in Getter Robo Anthology has the Getter Emperorliterally curb-stomp a god (well, using its fist)... face first into a galaxy. It ends with that one punch.
The fight in Fullmetal Alchemist Chapter 94 between Roy Mustang, looking for the killer of his friend Maes Hughes, and the homunculus Envy, who was said killer, was much looked forward to due to the preview in the previous volume. It turns out to be about 10-15 pages of Mustang unleashing a No Holds Barred Burndown on Envy while occasionally letting Hawkeye have a few moments of Badass Gunslinging. Envy's eyes had to regenerate several times during the fight.
Mustang: "I can't believe you made yourself a BIGGER target."
An onlooker even notes: "See those flames? That homunculus is going all kinds of down."
The Briggs vs. any other army. Especially Drachma; they show up at the end of a volume with thousands upon thousands of troops and masses of artillery at the ready. It looks like it's setting up for an all out war in the next volume. Said volume opens up with the entire army wiped out without causing any real damage to Briggs. If anything, Brotherhood was even worse for Drachma, as they didn't even manage to survive until the opening credits of the episode.
The first King Bradley vs. Greed fight in the manga is another one. Just standing up to the man gets you a Crowning Moment of Awesome.
Ed vs. Mustang: Ed runs away for most of the battle, and although he manages to disable Mustang's spark-creating glove (key to his fire-based alchemy), Mustang reveals that he wears such gloves onbothhands and defeats Ed almost instantly.
In an example that doubles as a Crowning Moment of Funny, Dr. Knox utterly owns Mei and Lan Fan when they ignore his orders for strict bed rest and attempt to go all out war on each other in his house. Admittedly, they're both injured, but it was a pudgy alcoholic coroner with a smoking problem versus two bonafide trained fighters.
Alex vs. Olivier. Alex got his ass kicked eight ways from Sunday.
Lan Fan & Greed/Ling VS Gluttony is one constant beating that Gluttony receives from both participants. Gluttony receives this a lot.
Also, Father vs. Everyone, before he lost his control on "God". During the fight, Ed's metal arm is destroyed, so Al sacrifices himself and gives Ed his real arm back. Know what happens next? Edward proceeds to totally and utterly annihilate Father, which is made even more impressive by the fact that most of the curbstomping here was done by Ed's punches.
Kenshiro vs. Shin in Fist of the North Star. Actually, Kenshiro vs. just about any hyped up villain during the first half of the manga not named Raoh or Souther.
This was actually a more noticeable issue in the anime than in the original manga. In the manga, Shin was simply a textbook example of a Token Motivational Nemesis, being killed off at the end of the first story arc after serving his role to fill out Kenshiro's back-story. The producers of the anime decided to expand Shin's role by making him the main antagonist for the early episodes prior to the introduction of the other Hokuto brothers. As a result, the actual battle comes off as a bit anti-climatic compared to the amount of build-up preceding it.
Konata in Lucky Star curbstomping every opponent she faces ... in any video game, even a quiz bee.
Van vs. the Dragonslayers in Vision of Escaflowne The curb-stomping starts out cathartic and ends up terrifying.
In Katekyo Hitman Reborn!, this trope is Hibari Kyouya personified. He either curb stomps or fight even with all his opponents. Most notably he has curb stomped Tsuna, Gokudera, and Yamamoto on many occasions, Gola Mosca in the fastest curb stomp battle ever, TYL! Hibari curb stomped Gamma in the Future arc, who had just mopped the floor with Gokudera and Yamamoto and Real Funeral Wreath Daisy with a set ofhandcuffs.
To elaborate more on that second fight, each of the duels against the Varia are preceded by a lot of talk about how unstoppably powerful the Varia are, and Tsuna predictably recoiling in horror and fear each time. Gola Mosca is hyped the most out of all of them. The battlefield is then described as being far worse than a war zone, set off by barbed wire and surrounded by automatic turrets as well as being full of land mines. Gola Mosca flies and thus doesn't care about the mines, while Hibari is forced to watch out for them. He still crushes his opponent in the space of two panels.
In Part 3, Abdul and Polnareff psyche themselves up before heading into Dio's mansion, carefully and silently testing for traps and ambushes as they go. The moment they sense an enemy is near, Iggy leaps out around the corner and takes down their opponent in a single blow. The text box sums it up like so:
"Name: Kenny G. Stand Power: Illusions. Beaten without a fight."
At least he got off easy. Steely Dan got a nasty head wound and a broken arm. And then Jotaro casually punched him about 2000 times.
Subverted with Carine in Part 5. Mista quickly guns him down as he charges at them, before he gets a chance to show his stand. Turns out his death was the key to unleash the Nigh Invulnerable Notorious B.I.G
After a huge lead-up, the final battle of Fairy Tail vs. Phantom Lord ends with Makarov coming back from his injuries, exchanging two blows with Jose before using Fairy Law to beat him and his entire army at once (except for Aria, the Phantom Lord mage who drained Makarov of his magic in the first place who just gets an additional Offhand Backhand).
Before that, we have Erza curb-stomping Aria, the most powerful of Phantom Lord's element four.
Also, when Laxus forces everyone to fight one another, Fried attempts to kill Elfman. Mirajane turns into a demon and utterly destroys him, only returning to her normal self when her she's literally half an inch from taking his life.
In the Nirvana arc, the Oración Seis blow up the alliance team's airship and beat all of them to the ground before kidnapping Wendy.
Gildarts singlehandedly curb-stomps Natsu just by flaring his Battle Aura.
Makarov ends up on the receiving end of this trope when he faces Master Hades of Grimoire Heart. Makarov is unable to land a single good hit against him and gets Impaled with Extreme Prejudice for his troubles.
Kagura from Mermaid Heel does this to Yukino of Sabertooth.
Laxus obliterated Raven Tail's strongest members all by himself.
The Natsu and Gajeel vs. Sting and Rogue match. Even though both Sting and Rogue activated Dragon Force, even their combined strength couldn't do a thing against Natsu, who deliberately disposed off Gajeel earlier, and can't even use Dragon Force on his own.
Natsu's and Gray's fights with Erza have a reputation for being this, though the friendly nature of their fights does have a share in it.
And after unlocking her Second Origin power and re-equiping into Nagakami Armor, Erza epicly curbstomped Minerva into submission. Minerva even begged for mercy before getting flattened.
The first round of Natsu vs. Future Rogue. Natsu starts hitting Future Rogue incredibly hard,but Future Rogue is completely unfazed,despite recognizing that Natsu was powerful. Future Rogue then starts thrashing Natsu around,enraging Natsu to the point of Natsu activating his Super Mode. The tables seem to turn at Natsu's favor,but Future Rogue casually enters his own Super Mode and heavily wounds Natsu with a single spell,defeating him. He would probably have killed him if Ultear didn't appear at the last moment.
In D.Gray-Man, Allen was recovering from a very near-death experience when Tyki had destroyed his arm and has a Teaz eat a hole in his heart. After finding out that he had somehow survived, Tyki sent a Level 3 Akuma against him while he was helpless. Allen gets kicked around and almost dissolved by the thing, but then he finally manages to get his vaporized Innocence to re-form. And now it's way more badass. The Akuma suddenly finds itself faced with Crown Clown, in all its white, fluffy Holy Hand Grenade glory, and Allen stomps back hard with a One-Hit Kill.
A perhaps even more epic one occurs when a Level 4 Akuma attacks the HQ and curbstomps almost the entire Order. In the process of doing so, however, it messes up Cross Marian's clothes. Bad move...
Touma vs Kanzaki in A Certain Magical Index. She's the local magician hot chick with a sword that has divine powers. Only, she completely stomps him through the use of protective wires to keep her from nullifying any of her powers. Which she never uses. And later there's a peaceful moment followed by another quick fight where she completely dominates in hand to hand combat as well. Good thing she's friendly (kinda) because honestly, he'd never stand a chance if she really wanted him dead: as a Saint, she's considered the magical equivalent of a nuclear weapon.
Later on in the series, Kanzaki herself gets curb stomped by the Knight Leader, who defeats her without even drawing his sword.
When Acqua first appears, he curb stomps Touma and Itsuwa... then the entire Amakusa force... and then Kanzaki.
The fight (if it can even be called that) between Accelerator and Aiwass definitely qualifies. Accelerator gets slaughtered completely by Aiwass' passive defenses!
Accelerator gets one of his own when he utterly annihilates Kakine. A second time after Kakine brutally attacked Yomikawa (who just saved him from a bullet to the brain.Too Dumb to Live in full effect.
Pretty much every fight involving Fiamma is him effortlessly beating the crap out of his opponents. And then after Touma finally defeats him, Aleister shows up and does the same thing to Fiamma.
Any fight against Othinus is pretty much a curb-stomp by nature, although which way the stomping goes is random. Othinus has abilities that are effectively omnipotence, but they only actually work 50% of the time. Othinus is described as someone who "has an equal chance of defeating the strongest opponent, or losing against the weakest opponent". It's why Othinus doesn't tend to get involved in direct combat too often.
Digimon does this repeatedly. For instance, once in Digimon Tamers Takato and Guilmon (a Rookie that has not managed to digivolve to Champion level yet) encounter Devidramon, a Digimon inadvertently released from the field holding it by Impmon. The result of this is Devidramon flying around the city in full view of the populace and Guilmon getting his ass handed to him until he's about to be killed, after which Takato manages to get him to Digivolve into Growlmon. In the fight that follows, Devidramon is destroyed, but Growlmon has no way to de-digivolve.
Also in Digimon Tamers: Wargrowlmon, Rapidmon, Kyuubimon, Guardromon, and Leomon vs Beelzemon. Beelzemon's the one who does the stomping. Poor Leomon...
Perhaps the most obvious use of this occurs in Digimon Adventure - Enter the Dark Masters. The four Dark Masters appear and take turns curb-stomping the entire team, including the Megas. It was an entire episode devoted to a series of curbstompings, acting as a sort of Wake Up Call Boss series.
Episode 4 of Digimon Adventure, Birdramon vs Meramon: Meramon uses fire attack. Birdramon ignores. Birdramon uses one fire attack against Meramon. End of the fight.
This happens a lot in Digimon Xros Wars. One major example is in episode 19. Bagura commander Kongoumon unleashes a massive army of GranKuwagamon on Forest Zone. Note: GranKuwagamon would be Mega-level Digimon in a normal season. How does this end? Taiki DigiXrosses the Starmonz with Beelzebumon, who takes out the entire army with one cannon blast that splits into a meteor shower.
Also whenever Skullgreymon shows up this usually ensues.
When Merukimon first shows up in Digimon Savers, he's mega/ultimate level, while the protagonists' partners have only achieved champion/adult, two whole levels below. It goes about as well as you might expect: the heroes can't lay a scratch on Merukimon and he depowers them with single attacks.
Change 123: Sora Uzuki spends weeks trying to provoke Mokoto's most powerful alternate personality into emerging. When she does she ends up weaponless and with a broken arm within seconds, then spends the next chapter fleeing for her life.
First against Jones the Dismantler, a serial killer who uses his immensely powerful fingers to strip the flesh from people's bones with his bare hands. The entire match consists of Killua ripping Jones' heart out at a speed too fast for the naked eye to see, then, depending on the version you're watching, either crushes it, or waits for Jones to die, then calmly putting in his corpse's hand.
One year later he takes the exam again and passes with flying colors after knocking out all other candidates cold in an Offscreen Moment of Awesome.
Saito Hajime from Rurouni Kenshin is actually referred to as a character executioner by his creator. By the end of the manga, he's stomped on Sanosuke, Usui, Yatsume (otherwise known as that guy who looks like Venom), and one of the Four Stars in four moves or less in every case. The only people he hasn't been able to crush are Kenshin and Shishio (who actually turned it around on him).
Ed's father does this to both Spike and Jet in Cowboy Bebop. He disarms them by throwing an egg, completely ignores one of Spike's kicks to his knee, blocks his other attacks, then lays him out with one palm strike. The only fight in the entire series where Spike is completely outclassed (even Mad Pierrot was more even), and comes totally out of nowhere.
Shunsei got a nice one from Baki too: He throws one punch, which Baki dodges, countering with a punch to the side of the head that gives him a concussion, followed by an uppercut to the chin and a roundhouse kick to knock him out.
Otome Youkai Zakuro starts up with seven characters (four of whom are military men) losing against a spider monster. Title character Zakuro then wakes up, unseals her power, delivers her usual pre-asskicking speech and kills the spider monster in no less than 15 seconds.
Katanagatari's final episode features 11 of these, in rapid succession, honestly the 12th battle might count as one a Curb Stomp Battle, since every hit Emonzaimon landed on Shichika was allowed by Shichika just so that he could get in close enough to finish him off.
Happened in Yaiba with demon Onimaru against Yaiba, then Yaiba vs the revived Batguy and also Gekko with the Devil King Sword against Yaiba. When Yaiba put his hands on the Supreme King Sword during the fight against Jewel, the "one side" of the battle quickly turns to his favor.
In Phantasy Degree, the students of Athena just beat up two of the top warriors of the Big Bad, and they're pumped. Then 5 more show up. Next time we see them? All the students are dead, except for one. AND THE VILLAINS DON'T HAVE A SCRATCH BETWEEN THEM.
In the original Mobile Suit Gundam the first battles between Char and Amuro comes out like this. While Char's mobile suit is an old Zaku II that is grossly inferior to Amuro's titular robot, Char pretty much owned Amuro, and the only thing preventing Char from destroying the Gundam three times faster than a blink was the fact he underestimated its armor and brought only a machine gun to the battle before Amuro learned to dodge.
The final battle between Amuro Ray and Char Aznable comes down to one of these in Char's Counterattack, with Amuro, who has other things to worry about, tearing Char to pieces in a matter of minutes.
And finally, Madoka in Goddess form vs. Kriemhild Gretchen a.k.a. Madoka in witch form (and yes, this results in somewackyhijinks).
The battle with Charlotte subverts and inverts the trope twice in a row. First, Mami seems to destroy Charlotte easily, but then a giant snake leaps out of Charlotte's "corpse" and devours Mami before she can react. Then Homura gives it a go; she immediately gets eaten... and reappears unharmed. Several times. And then the bombs she planted everywhere, including inside Charlotte, vaporize the helpless witch.
Super Atragon: Every time the enemy fights anything but the battleship Ra.
Mai, Natsuki and Mikoto vs. the cake-eating Orphan.
Miyu vs. Akane, largely by virtue of surprise attack.
Mikoto, Yukariko and Shiho vs. Akira. Akira is trapped in an illusion and unable to escape, resulting in her Child getting taken out in a surprise attack by Shiho's Child.
Shizuru vs. Yukino, whose Child has virtually no offensive abilities.
Both of Shizuru's fights against Nao. Nao briefly gains the upper hand in the second fight when she wraps Kiyohime in webs, but Shizuru reverses the situation just as quickly by cutting off Julia's legs and freeing Natsuki.
The entire cast vs. the Obsidian Lord. Once the Hime Star is destroyed, Kagutsuchi destroys the Obsidian Lord and Miroku in one attack.
In the manga, Akane encounters the Three Scale Sisters, who are holding Kazuya hostage, on her way to try to free Mikoto. As soon as she gets close enough to Kazuya, she summons her Child, and defeats all three with a single tornado.
Even the student council election can be considered one. Haruka got twelve votes while Shizuru got over eight hundred.
Kimba the White Lion: Kimba takes on a group of rhinos by jumping and grabbing on to the leader's head and blinds him by covering the leader's eyes with his feet. The leader of the rhinos tries to get Kimba off his head by shaking his head and charging straight ahead only to slam into the other rhinos. The leader eventually collapses and Kimba wins the fight without a scratch.
Yu-Gi-Oh!: Seto Kaiba usually wins his duels like this unless his opponent is either Yugi, Joey (who can't beat him, but can put up a good fight), the current season's Big Bad, or one of his Dragons. This was especially true during the Battle City arc when Kaiba had the Egyptian God Card, Obelisk the Tormentor, whose special ability is pratically designed to curb-stomp the opponent.
Also when Kaiba and Yami Yugi team up in Battle City and thrash any ghoul (rare hunter in the dub) who stand in their way. It's effectively a duelist's worst nightmare when this pair put aside their differences and form a tag team.
In Yu-Gi-Oh! ZEXAL, Yuma was able to defeat Shark the first time, when Shark was brainwashed by Number 17. However, since then, almost every time that Yuma duels Shark, when Shark is in control of his actions, it tends to be one-sided, and in Shark's favor.
Yuma's first duel with Kaito was pretty one-sided too. The only reason Yuma survived was because Kaito had to abort the duel due an emergency involving his brother. Yuma lost his second duel with Kaito (where there were no real stakes on it) but it was a far more even fight.
Psyren usually had close, well-coordinated fights, but a few fell into this category.
Dholaki and Shiner get the jump on the main cast, and the results are bloody. Oboro is near-fatally injured and has to convert himself into a Tavoo to survive, Hiryuu is shot into the stratosphere, Ageha gets his leg blown off, and Kabuto is injured enough to be considered legally dead though he gets better.
This was all to show how awesome the Future Elmore Kids were, since they pull a Big Damn Heroes moment and deliver their own curb stomping. Only Shiner makes it out alive. Dholaki was killed in two hits.
Junas vs Everyone in the Root Invasion arc. He takes out Ageha and Shao, both of whom are Anti-Magic users and winners of the Superpower Lottery in a few hits.
Whenever someone uses Nova, the results are bloody. Ageha, Amamiya, and Asuka all annihilate everything when they first use Nova.
The final battle against the Big Bad of the series is a joke. Ageha activates his Nova, and teams up with Miroku. They then destroy Quat Nevas in a single attack. Considering that Ageha had just seen it destroy the world though, it may have been a justified No Kill Like Overkill.
Blade of the Immortal offers nice example of this trope when Otono-Tachibana Makie encounters Manji for the second time. Let's just say it didn't go exactly well for him.
If the Dark Precure shows up to face the heroes in Heartcatch Precure, expect them to be on their backs and de-henshined. Before Cure Moonlight returned, Blossom and Marine kept getting beat silly and when Sunshine appeared, they could only hold her off long enough to bail the series' MacGuffin out! When Moonlight does return, she pays her back in kind.
The said can be said for Big Bad Dune. When he fully appears, he wipes the floor with everyone that's transformed. They return the favor at the end.
In Gamaran there are plenty of these, usually when a named character takes on the lower members of the opposing schools. In details:
Gama versus the Hyuga brothers.
Shinnojo and Zenmaru vs the axe-users Agon and Hakuryu.
Shinnojo against Misaku Nikaido.
Zenmaru is on the receiving end while fighting SasukeSakakibara, but quickly turns the tide as soon as he shows us how well he can handle the Sadanaga sword.
Iori Sengoku regularly inflicts these at anyone who face him. Gama? Single-Stroke Battle. Ukyo of the Souen Ryu? An offpanel Cruel and Unusual Death. Ichiou Jinno, the eldest of the Myojin Ryu (one of the strongest schools of Unabara)? Two punches and it's all over.
Popotan: Keith's fight against Daichi, Mai and Mea, which he wins after a few seconds. His second fight with Mea takes a little longer, but he manages to subdue her (groin damage notwithstanding).
In Popcorn Avatar, Kurando's battle against one of the Asura late on in the series lands him in the hospital.
In Claymore any battle in which Priscilla participate post-awakening is this even if her opponents are multiple Abyssal Ones
The first battle in Banana no Nana is between a girl with the power to manipulate water, and one with the power to manipulate bananas. Naturally, the battle isn't even close. The banana manipulator utterly thrashes the water manipulator. She tries coming back by making a hostage of a girl who has super-strong legs that allow her to make amazing jumps... but forgot that strong legs are good for more than just jumping.
Sangatsu No Lion applies this trope in a battle of wits (i.e. a game of shogi). In the match between Rei and Shimada, the latter almost immediately guides the former to his loss in the game before he even realizes it. This scenario is specifically invoked at Nikaido's request in a flashback for Shimada to "knock [Rei's] brains out."
The Mazinkaiser OVA practically uses this as bookends for Great Mazinger. Tetsuya and his machine is beaten three times in two episodes before he goes and leaves the rest to Kouji. When he comes back in the finale, it's one of his signature Big Damn Heroes moments and, sadly offscreen, utterly demolishes Dr. Hell's monsters without a scratch.
One happens early in Kagerou-Nostalgia when warrior monk Shiranui tries to fight Big Bad Gessho Kuki. The fight lasts about ten seconds before Shiranui is all but burned to a crisp, and that was with all of his defensive wards in place. He recovered, but he won't be trying that again.
Happens often in Attack on Titan, and usually it's the Titans who are the ones handing it out. Well, they areFlesh EatingGiants with incredible Healing Factor and can only be killed by getting the back of the necks cut, while humans have only cannons, stone walls and a few admittedly very Badass soldiers with Titan-killing swords. Most emphasized in their first fight, where every single member of Eren's squad save Armin is killed and eaten by the Titans, including Eren himself (well, sort of) and they don't even manage to scratch one. It's only by Episode 6 that Titans start being taken down.
This trope was taken Up to Eleven when Titan Eren knocked out the Titan about to attack Mikasa, then repeatedly stomped on the titan's head while it was lying on the metaphorical curb.
Levi proved why he is the World's Strongest Man by wrecking the Female Titan when highly experienced soldiers died fighting against the latter. And also earlier, he is shown effortlessly killing several Titans with an air of boredom.