Badass Boast/Anime and Manga

"Gin: Now you'll see why I'm called "the Shooting Star"! Akatora: I am the Demon Dog of Kai, Akatora! Have you heard of me, mutt?! Kurotora: May a hundred or two hundred of you come! I, Kurotora, will beat you all! Churota: Those who are afraid of death better run away! I, Chutora, will show no mercy to the rest! Moss: I am Moss of Kasumidake! Come at me, if you think your fangs can get through my fat!"
 * Ginga: Nagareboshi Gin has this in spades.

"Sayaka (Mazinger Z manga): What are you saying, Papa? Are you saying we should let it run wild even more? I can't do that! Even if Aphrodite gets destroyed...! I will fight...! I´ll take down that demon that's destroyed our town!!
 * Mazinger Z and its sequels (Great Mazinger, UFO Robo Grendizer, Mazinkaiser, Shin Mazinger Shougeki! Z-hen...) provide plentiful examples:

Kouji (Great Mazinger manga): Grandpa's murder... All the people who have been hurt... Japan's peace trampled... All because of Dr. Hell... this time, for sure... This time I'll destroy Dr. Hell for good!

Dr. Hell (in reply to the boast above): Destroy me... Is that so...? A Mazinger Corps...? You mean to say that you've raised up all the might of your country to destroy me? How much pretentious... What clever leadership you must have... However, it seems the "little island country" has gotten a swelled head. To try and keep Dr. Hell from becoming ruler of the world...? Well, that's just fine! My conquest of the world will begin with Japan! I'll show them! I'll destroy Japan in a mere ten days! And the world shall know the true power of Dr. Hell!

Great General of Darkness (during his climatic duel with Tetsuya in the Gosaku Ota manga): "Your end has come! I have already failed too many times with you! For your blame, the Emperor of Darkness has got a fit of rage! Now I am through playing with you! The strength of the General of Darkness, commander of seven armies of Mykene… Now it shall descend upon you!"

Emperor Vega (UFO Robo Grendizer anime): I am Vega, Emperor of Universe and I command you submit to me!

Dr. Hell (Mazinkaiser): At last! The time has come... for my troops and me claiming our Empire!

Tetsuya (Mazinkaiser): Damned Beasts! I will make you to pay for what you have done to the Institute!"

"Kouji: Very well. I'll deal with the Mechanical Beasts. Tetsuya: Kabuto! Go and strike Dr. Hell's base. Kouji: Do you think you can defeat them without help? Tetsuya: Of course! My robot is a Mazinger right like Mazinkaiser!"
 * And in Mazinkaiser Kouji and Tetsuya got the next exchange:

"Kouji: But... I won't lose! Mazinger Z will definitely not lose!"
 * And in the Shin Mazinger Zero manga, Mazinger was chained and inmobilized by a Mechanical Beast as another was trying to impale it:

""I am darkness beyond blackest pitch, deeper than the deepest night. I am the Sea of Chaos...the source of all chaos. That is how you describe me. I am...the Lord of Nightmares.""
 * Kyon from Suzumiya Haruhi. You've gotta hand it to him. In the 1st book, Melancholy, he nearly got killed by Ryoko. In the 4th book, after nearly being killed by her a second time due to a humongous in-universe Retcon, he threatens the Integrated Data Sentient Entity into not deleting Yuki. This is the IDSE, who's nothing but data, and cannot be detected. Kyon threatens it by convincing it that he can provoke Haruhi by saying that he is John Smith. It works.
 * Obviously the above failed to capture the sheer awesomeness of his boast. Let us reiterate. He tells a superintelligent alien god to back down. And it does. "If anything happens to Yuki Nagato, I will unleash hell."
 * Parodied in Mobile Suit Gundam 00. Patrick Corlasawar in the 1st episode claims to be unbeatable throughout 200 simulation battles in front of The Stoic Setsuna, only to be easily cut down by the latter. And he spends the rest of his lifetime being Team Patrick.
 * Specifically, he gets cut down while boasting. The attacks do not stop his mouth. He finishes just before he hits the ground.
 * He repeats this throughout the show in almost every apperance, still being either defeated before or just after he finishes his boast and/or promises a win to his commanding officer.
 * The Lord of Nightmares, from Slayers NEXT, introduces herself this way.

"Now watch closely, everyone. I'm going to show you how to kill a god. A god of life and death. The trick is not to fear him."
 * "Throughout the sea, men speak of my strength, greater than any living man. A vast crew of eight thousand men follow at my back! Know fear, for I am CAPTAIN USOPP!": A subversion from noted liar and coward Usopp, of One Piece.
 * "I travel the seas of the world, obliterating every enemy in my path. I can't count how many ships I've sunk. People fearfully call me Lord of Destruction. Remember my name well. CAPTAIN USOPP!" He's rather fond of this trope
 * Later on, he develops his own theme song and a Superhero identity to go with it named Soge King.
 * And yet, stories he told Kaiya during his introduction, such as fighting a giant woman, have happened. Maybe it's not so much a boast as a prediction.
 * Don't forget the giant goldfish that he claimed to have followed around the seas -- only to encounter one when leaving Little Garden.
 * After, he notes how far he's come. "I've really degraded as a liar. Now, I can actually do these things!"
 * Ahem: I AM WHITEBEARD!!!
 * No description needed. Just his name.
 * Even Luffy has done this. "There is no one in the world who can beat me, because I am a rubberman!"
 * At Thriller Bark: In response to "The nail that sticks up gets hammered down": "No one can hammer me down, because I'm a rubber man!"
 * At Enies Lobby: "We have ten thousand men guarding this island! This is the greatest fortress of justice in the world!". "Yeah, and I'm alone, so GET OUTTA MY WAY!"
 * The Arlong fight has a rather fun Self-Deprecation variant. Luffy explains to Arlong that he lacks all of the most basic skills a pirate should have, leading Arlong into asking why someone like him would have an entire crew following him. The answer? Because what Luffy does specialize in is beating the everloving shit out of guys like Arlong.
 * And there's a lot more where that came from, too numerous to list.
 * In Princess Mononoke, Eboshi has many qualities of a Lady, but humility is not among them. Which she makes perfectly clear when she accusses the emperors own elite soldiers of being cowards during the final showdown.

"Kamina: I'll tell you who I am, so listen up with those big damn ears of yours! In Giha village, Team Gurren's name resounds with notoriety! And its ruthless, indomitable leader - with the flame of a man's soul burning at his back... is the Great Kamina! THAT'S WHO I AM!"
 * Kamina is very fond of doing this in Tengen Toppa Gurren Lagann.
 * His first one goes something like this:
 * His first one goes something like this:

"Kamina: Remember this, Beastie! Combining is when two fighting spirits COLLIDE! It sets a man's soul on fire. COMBINING OF COURAGE: GURREN LAGANN! WHO THE HELL DO YOU THINK I AM?!"
 * Then the combining of Gurren with Lagann to create one of the titular mechs...

"Simon: But! Here on my back and here in my heart, he lives on as a PART OF ME! If you're gonna dig, dig to pierce the heavens! Even if it's my own grave I'm digging, I keep going! Once I've dug my way through, that means I've won! Who the hell do you think I am? I'm Simon! Not Kamina or bro! I'm ME! Simon the Digger! (enemy gunman attacks, it differs based on the manga, anime, or movie) Finishing move! Giga... Drill... BREAAAAAAAKEEERRRRRRR!!!"
 * Simon also becomes quite skilled at it, too. As in spending the last episodes with ALL his lines being of that kind. While fighting god-like enemies.
 * He gives an excellent one after

"Simon: Don't underestimate us! We don't care about time, or space, or multi-dimensional whatevers... We don't give a damn about that! Force your way down a path you choose to take and do it all yourself. That's the way Team Dai-Gurren Rolls! Nia: Even when trapped by Karma's cycle... Yoko: The dreams we left behind will open the door! Leeron: Even if the universe stands in our way! Simon: We'll break through time and space... All: And defy all those who would stop us to grab hold of our path! Simon: Tengen Toppa... Gurren Lagann!
 * Hell, almost everybody in the show does this before (and sometimes during) a big fight, usually ending with some variation on "JUST WHO THE HELL DO YOU THINK WE ARE!!!" Every single time it's a Crowning Moment of Awesome - and often a Crowning Moment of Funny - and each one more awesome than the last. Heck, there's even a multi-person Badass Boast in the final episode. And it is sweeeeeet.
 * Our seething blood will determine what will be!

All: JUST WHO THE HELL DO YOU THINK WE ARE?!?"

"Anti-Spirals: How... how can this be? WHERE ARE YOU DRAWING ALL OF THIS POWER?!? Simon: We evolve... beyond the person we were a minute before! Little by little... we advance a bit further with each turn! That's how a drill works! Anti-Spirals: That's the path that leads to extinction! Why can't you see the pathetic limitations of the Spiral Race? Simon: No, that's YOUR limitation! You sit here closed off! Locking away other life forms like some kind of king! That's nobody's limitation but your own! Yoko: That's right! We humans used to have someone much greater than us! For his sake alone... we'll keep on moving forward! Nia: I've staked everything... on the greatness of the human spirit too! Simon: Mark my words... this drill will open a hole in the universe! And that hole... will be a path for those behind us! The dreams of those who have fallen... The hopes of those who will follow... those two sets of dreams weave together into a double helix, drilling a path towards tomorrow! And that's TENGEN TOPPA! And that's GURREN LAGANN! My drill is the drill... THAT CREATES THE HEAVENS!!! "
 * And in the final episode...


 * It's a slightly lesser example comparatively speaking, but no less epic...

"Signum: We are the guardian knights who gather before our mistress, she of the Night Sky. Shamal: As long as our mistress exists, our souls will never extinguish.
 * Oh, who are we kidding? Gurren Lagann might as well be called "Badass Boast: The Anime."
 * The Wolkenritter of Magical Girl Lyrical Nanoha rattle one off when they return for the final battle of the second season.

Zafira: As long as we have life in our bodies, we will stand by each other.

Vita: We will always exist before our mistress, Queen of the Night Sky, Yagami Hayate."

"Hayate, holding the bloody and near-dead Vita: The iron knight Vita and the steel count Graf Eisen. There is nothing in this world they cannot destroy."
 * Vita gets one all on her own in StrikerS, "I am the iron knight Vita, and this is the steel count Graf Eisen. There is nothing in this world we cannot destroy," which also gets turned back on her in the most heartrending scene in the series when she begins to despair thinking she cannot live up to it.
 * And then heartWARMING when she does indeed live up to it.

"Goku: I am the hope of the universe! I am the answer to all living things that cry out for peace! I am protector of the innocent! I am the light in the darkness! I am Truth! Ally to good, nightmare to you!"
 * "The Nanoha that you've always looked up to is an undefeated Ace who will not lose to anybody."
 * Cell from Dragonball Z gets one in the Final Battle of his arc: "I am the end of the Universe!!"
 * Goku gets a heroic one earlier on, against Frieza.

"Goku: I'm a proud Saiyan who calls Earth home, and I'm here to defeat you. I am the warrior you've heard of in legend, pure of heart and awakened by fury, that's what I am. I AM THE SUPER SAIYAN, SON GOKU!"
 * The version in the redub Dragon Ball Kai is better (and also the first time Goku uses his full name in an English dub):

"Swordsman: You bastard! I'll kill you! Musashi: You lie."
 * Subverted when Vagabond's Yoshioka Denshichirou tries to use his lineage (as son of Yoshioka Kempo) against the intimidating and highly-skilled Sasaki Kojirou, only for Kojirou's companion Ito Ittousai to point out that not only does Kojirou probably not know who Kempo is... but Kojirou's deaf. (Later on against Miyamoto Musashi, Denshichirou admits that he used to do this to intimidate.) Used much more effectively by Musashi later, who otherwise usually avoided this:

"Lelouch: I am Zero. The man who leads the Black Knights, who challenges the Holy Britannian Empire. The one who holds the entire world in his hand."
 * From Code Geass:

"Lelouch: My name is Lelouch vi Brittania, eldest son of Empress Marianne, the prince who was abandoned by his empire. If anyone wishes to stop me, let them try. If there is anyone who can go beyond my despair. Lelouch: We have nothing to fear. My name ... is the future of this world!"
 * And let's not forget:

"Jeremiah: Memorize this! Memorize Jeremiah Gottwald! Commit it to memory, because that's the memorable name of the man who has defeated you."
 * Lord Jeremiah Gottwald (a.k.a. "Orange boy") gets one as well when fighting Anya:

"Lelouch: The world has to change, and I will change it. Urabe: We've been waiting for you, Master Zero. Please, give us your orders. Lelouch: Very well, because after all, I am Zero! The one who will crush the world, and the one who will recreate it anew!"
 * Lelouch is full of these. For another one, right after :
 * Urabe and Kallen's Humongous Mecha drop in through the ceiling*

"Lelouch: Wherever oppressors abuse their power by attacking those who are powerless, we shall appear again, no matter how mighty, how formidable our foe may be. Those of you with power: fear us! Those of you without it: rally behind us! We, the Black Knights, shall be the ones who stand in judgment of this world!"
 * From the Black Knights' public debut:

"Lelouch: So long as the strong oppress the weak, my rebellion will continue to grow! It begins today with the divine punishment I have wrought upon the inept and foolish Viceroy Carales. I shall fight, against all those who abuse their power!"
 * And when Zero makes his big return in Season 2:

"Lelouch: Attention entire world! Hear my proclamation: I am Lelouch vi Brittania, Emperor of the Holy Brittanian Empire and your only ruler."
 * And in the final epsiode:

"Schneizel has surrendered to me. As a result of this, I am now in control of both the Damocles and the FLEIJA weapons, and even the Black Knights no longer possess the strength to oppose me now. If anyone dares to resist my supreme authority, they shall know the devestating power of the FLEIJ As. Those who could challege my military rule no longer exist. Yes, from this day, from this moment forward, the world belongs to me!"

"Lelouch vi Brittania commands you: Obey me subjects! Obey me world!"

"Naruto: It doesn't matter how strong my opponent is. If he tears off my arms, I'll just kick him dead. If he tears off my legs, I'll bite him dead. If he tears off my head, I'll stare him dead. If he gouges out my eyes, then I'll curse him dead! Even if I get chopped into pieces, I'm gonna beat Orochimaru and take my friend, Sasuke, back once and for all!"
 * In Naruto the title character gets quite a few, but one in particular stands out:

""You and your god don't frighten me. You see, you and I believe in different things. You wanna know what I believe in? The Will of Fire. Right now, the god you should be worried about isn't your stupid Jashin or anyone else; it's me... because I'm the one who's about to pass judgement.""
 * And Shikamaru of all people proves to be pretty badass, when he's willing to get OFF his ass.

"A (Fourth Raikage): Damn Uchiha brat! I will teach you to fear my wrath."
 * Chouza Akimichi gets one when Dan, Tsunade's old boyfriend, remarks how big Chouza has grown. His reply? "I'm about to get a hell of a lot bigger."
 * Just let someone ask Jiraiya who he is.

""For someone who is not of the Uchiha Clan, you have mastered the Sharingan well; however, not being one of us, you lack our physical strength, and that's something you can't copy. Why is it that the Uchiha Clan is known by all... and feared by all? I'll show you what the Sharingan can do when it's wielded by a true heir of the bloodline.""
 * Though Itachi Uchiha is usually a person of few words,he did make a pretty badass boast to kakashi back in part 1.

"Every Jutsu has a weakness. And that jutsu's weakness... is me."
 * He gets another one in part 2:

""I will get you, do you hear me?! You can blow my limbs off. You can poison me 'till I can't move anymore, but I'm still going to get you! No matter what you pull, no matter what you throw at me, I'm going to make sure you tell me everything about Orochimaru! Is that clear?!""
 * Sakura Haruno does not take Sasori namedropping Orochimaru very well.

"Evangeline: I am the vampire Evangeline, Gospel of Darkness, evil mage without equal! All that lives must face death! I shall bring you peace!
 * Evangeline A.K. McDowell of Mahou Sensei Negima when she appears to kick the ass of some summoned Demon God:

Asuna: Eva-chan is really getting into this.."

"Nodoka:"
 * Much later, Nodoka, of all people, makes one to

"Byakuya: Disappear. My sword does not exist to crush insects like you. Byakuya: It is a thousand years too early... for you to become worthy enough to die by my Bankai. Byakuya: "Control"... you say? When you stand before me... that word holds no meaning. Bankai. Senbonzakura Kageyoshi. Byakuya: Even if I lose my arm and a leg, you are no match for me. Gin: If you stay here, I'll have no choice but to kill you. Grimmjow: Remember my name, and pray you never hear it again. Cause next time you hear it, you're dead meat... Grimmjow Jaegerjaquez! Ichigo: Use your Bankai! I will destroy it! Then I will take you to Rukia and... make you cry while apologizing to her! Aizen: From now on... I will stand in Heaven.
 * And boy, does it ever.
 * From Bleach 

Hachi: In Soul Society, there are no Gods other than the Shinigami -- the Gods of Death. So perhaps we cannot fully understand the weight of your words... Forgive us for our unbelief, "God" of Hueco Mundo.

Aizen: Observe... I am perfectly capable of reaching your heart at any moment.

Yamamoto: There hasn't been a shinigami stronger than me born in the last thousand years."

"Yamamoto: I am here. There is no better security than this."
 * After an enemy comments on the lack of security at 1st Division Headquarters:

"Barragan: You're trying to figure out my power, but can't, aren't you? Each Espada represents an aspect of Death. These are ten reasons why people die. Loneliness. Sacrifice. Nihilism. Despair. Destruction. Intoxication. Madness. Rage. And my aspect is Old Age. 'Old Age', meaning 'Time'. It is the most powerful, and most inevitable aspect of Death. Everyone must face it eventually. Look...with just a touch, I can rot your very bones. Barragan: Of course you can't comprehend it. That's just the way Death is. And from now until the end of this battle, there will not be a single thing you can understand. Rot, Arrogante.
 * Particularly of note is the number two Espada, Barragan Luisenbarn. Virtually every word out of his mouth is one of these.

Barragan: Did you think that Kidou does not age? How amusing. People die, animals die, and even Shinigami die eventually. Old age is a fate suffered by everything that can die. If the things built by humans can rot and die, then so too can the Kidou that Shinigami create. There may be Kidou that can last over a thousand years, but there can be no Kidou that last forever.

Barragan: Hollowfication? Clever! But who do you think you're playing Hollow at!? I am the Great Emperor, Barragan Luisenbarn! The God of Hueco Mundo!

Barragan: Puny! Miniscule! Worthless! Shinigami, Hollows, Arrancar, and the animosity between them...quarrels, will, freedom, beasts plants, the moon, the stars, and the sun, all these things are beneath my notice. Only my power is absolute. All other things are equal in their insignificance. I possess the ultimate power. The world shall be under my rule! There can be no equality between us. behold: in my cavernous eyes, your lives are no different from an ant's.

Barragan: With these hands, I will make sure to kill you. You will regret giving me power. I am King! I am God! I will never die! And I will target you for all eternity, Sōsuke Aizen!"

"Kenpachi: I'll let you go ahead and have the first strike. I'll stand here and you can cut me any way you want. You can go for my throat, or my gut. Take out my eyeball if you want. Or, if you're lucky you might kill me with a single strike. Kenpachi: I only wear the bells and this eyepatch to make things harder, so I get more enjoyment out of my battles. I'm glad you're taking advantage of them, because otherwise, they don't serve any purpose. Kenpachi: When I fight, I make sure to hold back. I never swing my sword with my full strength. Do you see why? If I didn't, my enemies are so weak, the battle wouldn't last long enough for me to enjoy it. Kenpachi: Sanity? I've never had such a useless thing!"
 * As you can see, whether he comes off as badass or a boring ball of Narm depends largely on the quality of the translation.
 * All this time, and not a single mention of Kenpachi Zaraki?

"Black Star:Holy am I alone throughout heaven and Earth! I am the star! Got that!?"
 * Light Yagami in Death Note: "I will be the god of the new world!" and, "I AM JUSTICE!"
 * Black Star from Soul Eater occasionally messes up, but normally proceeds to kick ass after telling his opponents how he is "the man who will surpass God".

""That smug look of yours... I bet you've never lost a brawl before, have you? Unfortunately for you... That's only because I've never been to America!""
 * Seto Kaiba from Yu-Gi-Oh!! ends just about every sentence with "Now if you'll excuse me, I have a multi-million dollar company to run!" He then proceeds to swagger off, leaving all the other characters rather confused and angry.
 * Hajime no Ippo: Takamura does one to Bryan Hawk, although in his head.

""Smirking like that... pissing me off! And what are you looking so happy about? That pisses me off! That really pisses me off! All you people are PISSING ME OFF!! Who do you think I am? I... AM... TAKAMURA MAMORU-SAMA!!""
 * He also does one in a match against a random opponent that managed to really piss him off.

"Luke Valentine: "I was designed to surpass you in every way! I was born to be your death!" Tubalcain Alhambra: "I bet they have a special place ready for you... In the deepest pits of Hell." Rip Van Winkle: "Tinker tailor, soldier sailor, my bullet punishes all without distinction!"  Anderson: "I'm about to paint the walls with the two of you."  Alucard: "Now,, it's time to educate you on how a real vampire does battle!""
 * Final Fantasy VII Advent Children features dueling boasts, delivered by dueling enemies. At the conclusion of his fight with Sephiroth, Cloud tells him "Stay where you belong...in my memories." Sephiroth's response to this is to look Cloud in the eye and declare "I will never be a memory."
 * Made especially awesome to those who speak Latin, as Sephiroth is quoting his newly-revamped theme song, Advent: One-Winged Angel
 * From Zombie Powder, we have Gifful, the Great Undead Box. "There is nothing that can kill me! You still think I am a small fry? Huh, Akutabi Gamma???" and the response...
 * Listen, I don’t care what you guys do around the universe. This is my sword, and anywhere it can reach is my country! Bastards who come in and try to mess with my things... whether it be a general, whether it be space pirates, whether it be a meteorite... I’ll destroy them!
 * Hellsing has quite a few:
 * "You said it yourself. Immortal freaks do not exist. I will exterminate you... And it must be like this. You are no more."

"Natsu:"Mages of Fairy Tail, specialize in property damage!" Natsu:"I’m gonna stop it! Even if it splinters my body, I’ll just stop it with my soul!" Gray:"Sorry, but it doesn't matter if you're a woman or even a child. I don't go easy on anybody who hurts my comrades." Lucy:"Spirits aren't shield! I fight alongside them! That's my style!" Erza:"My companion make my heart strong, If I'm fighting for those I love, I care not what happens to this body" Gajeel:"I don’t even know the meaning of going easy on someone." Makarov:"You have laid hand on the monster's children. Don't think any human laws will protect you" WE ARE FAIRY TAIL!!!!"
 * Fairy Tail has had it's fair share

"Gates: You little shit! Just who in the hell do you think you are?! Sousuke: Who, me? I'll tell you exactly who I am. (powers up Lambda Driver) I really couldn't care less about Mithril... (slowly starts walking towards Gates) I'm Class 2-4 at Jindai Tokyo Municipal High School.
 * Even The Stoic Sousuke Sagara tries to drop one in the final episode of The Second Raid. Emphasis on tries.

Gates: (uneasy) Hey now, I've still got a hostage here!

Sousuke: I'm student no. 41. (energy field starts forming around his fist) I'm in charge of waste disposal and umbrellas.

Gates: Hellloooo?! Shit...

(Sousuke's fist is enveloped in energy, he starts running towards Gates who screams out in fright)

Sousuke: I'M SOUSUKE SAGARAAAAA!!! (finishes off Gates with an insanely cool Elemental Punch)"


 * Action Girl Ran Mouri does one around the end of a Non-Serial Movie of Detective Conan.


 * Keima from The World God Only Knows has a good one during the Yui Goidou arc.

"Overcoming helples situations is our job!"
 * In Kara no Kyoukai, Shiki boasts that, "I can kill anything that exists- even if it's a god."
 * Genjuro from Senki Zesshou Symphogear has a minor one in episode 10

"Okabe: I'll say it again. I am the Mad Scientist, Hououin Kyouma, and the world is in the palm of my hand!"
 * Steins;Gate

"Elle (or pretty much any other SS user really): I am invincible, my Shadow Skills perfectly honed! The power of my blow... has NO EQUAL!"
 * Shadow Skill