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* ''VideoGame/SuperSmashBros. 4'' has its own TrueFinalBoss, [[spoiler: Master Core]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it impossible to determine how much HP it has left until the very end of the fight. With its animal form having quick and unpredictable attacks, its sword form being able to do some heavy damage and combos, its [[MirrorBoss clone form]] being a fairly competent AI version of yourself, and its humanoid form having attacks that can be very difficult to dodge, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (seeing all of its forms requires 7.1 and above. Lower intensities will skip certain forms, and below 5.1 you don't fight it at all), this boss can be a straight up MarathonBoss as well, since you have to defeat all five (six if you count the previous fight with Master Hand and Crazy Hand) of its forms in one go. The real kicker? While Giga Bowser and [[spoiler: Tabuu]] could be fought with 5 or 6 stocks respectively, you have to fight this boss with only '''''two stocks'''''.
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* ''VideoGame/SuperSmashBros. 4'' has its own TrueFinalBoss, [[spoiler: Master Core]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it almost impossible to determine how much HP it has left until the very end of the fight.fight. The only way you can really tell is that the fog covering the current form starts to break up when damaged. With its animal form having quick and unpredictable attacks, its sword form being able to do some heavy damage and combos, its [[MirrorBoss clone form]] being a fairly competent AI version of yourself, and its humanoid form having attacks that can be very difficult to dodge, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (seeing all of its forms requires 7.1 and above. Lower intensities will skip certain forms, and below 5.1 you don't fight it at all), this boss can be a straight up MarathonBoss as well, since you have to defeat all five (six if you count the previous fight with Master Hand and Crazy Hand) of its forms in one go. The real kicker? While Giga Bowser and [[spoiler: Tabuu]] could be fought with 5 or 6 stocks respectively, you have to fight this boss with only '''''two stocks'''''.
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* ''VideoGame/SuperSmashBros. 4'' has it's own TrueFinalBoss, [[spoiler: Master Core]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it impossible to determine how much HP it has left until the very end of the fight. With it's animal form being fast as hell, it's sword form being largely unpredictable, it's [[MirrorBoss clone form]] being a competent AI version of yourself, and it's humanoid form '''lifting up the entire damn stage''' to make sure it's attacks hit you, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (lower intensities will skip certain forms), this boss can be a straight up MarathonBoss as well, since you have to defeat ''all five'' (six if you count the previous fight with Master Hand and Crazy Hand) of it's forms in one go. The real kicker? You have to do all of this with only '''''two stocks'''''.
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* ''VideoGame/SuperSmashBros. 4'' has it's its own TrueFinalBoss, [[spoiler: Master Core]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it impossible to determine how much HP it has left until the very end of the fight. With it's its animal form being fast as hell, it's having quick and unpredictable attacks, its sword form being largely unpredictable, it's able to do some heavy damage and combos, its [[MirrorBoss clone form]] being a fairly competent AI version of yourself, and it's its humanoid form '''lifting up the entire damn stage''' to make sure it's having attacks hit you, that can be very difficult to dodge, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (lower (seeing all of its forms requires 7.1 and above. Lower intensities will skip certain forms), forms, and below 5.1 you don't fight it at all), this boss can be a straight up MarathonBoss as well, since you have to defeat ''all five'' all five (six if you count the previous fight with Master Hand and Crazy Hand) of it's its forms in one go. The real kicker? You While Giga Bowser and [[spoiler: Tabuu]] could be fought with 5 or 6 stocks respectively, you have to do all of fight this boss with only '''''two stocks'''''.
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* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighters'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighters'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
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* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionGun special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighter'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighter'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
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* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionGun special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighter'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".slim.
* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighter'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
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* ''VideoGame/SuperSmashBros. 4'' has it's own TrueFinalBoss, [[spoiler: Master Core ]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it impossible to determine how much HP it has left until the very end of the fight. With it's animal form being fast as hell, it's sword form being largely unpredictable, it's [[MirrorMatch clone form]] being a competent AI version of yourself, and it's human form '''lifting up the entire damn stage''' to make sure it's attacks hit you, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (lower intensities will skip certain forms), this boss can be a straight up MarathonBoss as well, since you have to defeat ''all five'' (six if you count the previous fight with Master Hand and Crazy Hand) of it's forms in one go. The real kicker? You have to do all of this with only '''''two stocks'''''.
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* ''VideoGame/SuperSmashBros. 4'' has it's own TrueFinalBoss, [[spoiler: Master Core ]], Core]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it impossible to determine how much HP it has left until the very end of the fight. With it's animal form being fast as hell, it's sword form being largely unpredictable, it's [[MirrorMatch [[MirrorBoss clone form]] being a competent AI version of yourself, and it's human humanoid form '''lifting up the entire damn stage''' to make sure it's attacks hit you, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (lower intensities will skip certain forms), this boss can be a straight up MarathonBoss as well, since you have to defeat ''all five'' (six if you count the previous fight with Master Hand and Crazy Hand) of it's forms in one go. The real kicker? You have to do all of this with only '''''two stocks'''''.
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*** As of [[UpdatedRerelease LOVE MAX!!!]], Parace's starting health no longer decreases when you continue. [[LuckBasedMission Good Luck.]]
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* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
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* Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.))
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighter'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
* From ''VideoGame/TeenageMutantNinjaTurtlesTournamentFighter'', the FinalBoss of the Super NES version, Karai, is this. She's fast, hits hard and has many moves that are difficult to avoid. [[https://www.youtube.com/watch?v=2z2d4u10Cvg This video]] shows her in action while being used by a human player, and gives some idea of how overpowered she is; the only opponent that gives the player any significant trouble is Karai herself, when the player is trying to fight "fair".
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* ''VideoGame/SuperSmashBros. 4'' has it's own TrueFinalBoss, [[spoiler: Master Core ]], which is considered ''even worse'' than the aforementioned [[spoiler: Tabuu]]. First and foremost, unlike any other boss in the series, the HP of this boss is [[InterfaceScrew completely covered by a black fog]], making it impossible to determine how much HP it has left until the very end of the fight. With it's animal form being fast as hell, it's sword form being largely unpredictable, it's [[MirrorMatch clone form]] being a competent AI version of yourself, and it's human form '''lifting up the entire damn stage''' to make sure it's attacks hit you, this boss can finish you relatively quickly if you're not used to putting up your shield. And, if you decide to fight it on the highest intensities (lower intensities will skip certain forms), this boss can be a straight up MarathonBoss as well, since you have to defeat ''all five'' (six if you count the previous fight with Master Hand and Crazy Hand) of it's forms in one go. The real kicker? You have to do all of this with only '''''two stocks'''''.
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* Darkheart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
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* Darkheart Dark Heart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
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* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionGun special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
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* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionGun special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.slim.
* Darkheart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
* Darkheart in the LiveActionTV/VRTroopers fighting game. One of his specials basically renders him invincible whenever he wants (not just invincible, but even ''touching'' him, melee attacks included, damages you.)
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* In an interesting subversion, SonicBattle let you ''create your own'' SNKBoss in the form of Emerl. A couple of character battles pits you (as Sonic/Shadow/Cream/etc.) against the little fighting robot equipped with all of the best skills (or you can reset his skills back to his default attacks for a pitifully easy fight). However, it's played straight during the final story, [[spoiler: where you, as Sonic, must take down Emerl ''with ALL of his ultimate skills equipped.'']]
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* In an interesting subversion, SonicBattle VideoGame/SonicBattle let you ''create your own'' SNKBoss in the form of Emerl. A couple of character battles pits you (as Sonic/Shadow/Cream/etc.) against the little fighting robot equipped with all of the best skills (or you can reset his skills back to his default attacks for a pitifully easy fight). However, it's played straight during the final story, [[spoiler: where you, as Sonic, must take down Emerl ''with ALL of his ultimate skills equipped.'']]
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* In an interesting subversion, SonicBattle let you ''create your own'' SNKBoss in the form of Emerl. A couple of character battles pits you (as Sonic/Shadow/Cream/etc.) against the little fighting robot equipped with all of the best skills (or you can reset his skills back to his default attacks for a pitifully easy fight). However, it's played straight during the final story, [[spoiler: where you, as Sonic, must take down Emerl ''with ALL of his ultimate skills equipped.'']]
** Even before that, you have to fight Dr. Eggman, who's an annoying combination of this and GetBackHereBoss. [[MacrossMissileMassacre He spamms missiles that sting for 20% damage each hit]], his bomb could be a potential OneHitKO if not dodged fast enough, he's out of reach most of the fight, so you'll have to rely on air attacks to attack him (none of which, sans [[HurricaneKick Tails' Cyclone kick]], are any good), and he has ridiculous health to boot. Oh, and much like his creation Chaos Gamma, [[TakingYouWithMe he explodes if KOed, and it's guaranteed to take you down as well.]] [[SarcasmMode Have fun!]]
** Chaos would be this as well thanks to his scary good reach, good defense, and very strong attacks. Only problem? [[MightyGlacier He's too...damn...slow.]]
** Even before that, you have to fight Dr. Eggman, who's an annoying combination of this and GetBackHereBoss. [[MacrossMissileMassacre He spamms missiles that sting for 20% damage each hit]], his bomb could be a potential OneHitKO if not dodged fast enough, he's out of reach most of the fight, so you'll have to rely on air attacks to attack him (none of which, sans [[HurricaneKick Tails' Cyclone kick]], are any good), and he has ridiculous health to boot. Oh, and much like his creation Chaos Gamma, [[TakingYouWithMe he explodes if KOed, and it's guaranteed to take you down as well.]] [[SarcasmMode Have fun!]]
** Chaos would be this as well thanks to his scary good reach, good defense, and very strong attacks. Only problem? [[MightyGlacier He's too...damn...slow.]]
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** The previous {{Gundam}} Battle Master/Battle Assault games were no different.
*** The first, Japan-exclusive title, The Battle Master had [[MobileSuitGundam Big Zam]], [[MobileSuitGundam0083 Neue Ziel]], and [[OriginalGeneration Psyco Gundam Mk. III]]. Big Zam and Neue Ziel were giant, and had a large laser, but were otherwise no problem. Psyco Mk. III, however, had large range for most of its attacks, including its Beam Saber and a full body beam attack. It also had an uppercut that could take out half of one of your three health bars.
*** In the first released to the US, Battle Master 2/Battle Assault, all these bosses returned, and Psyco was made even harder. Though it lost its full-body beam, it still had its uppercut and Beam Saber, which, due to the way sabers work in this game, was now unblockable. And if you dodged it, you still took some damage due to the way the dodge system works in this game; don't dodge it and you took even more.\\
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And when you beat Psyco, you entered a match with the [[MobileSuitGundamTheLastOutpost Hydra Gundam]]. This one had a laser attack that didn't use up energy unlike all the other lasers in the game, homed in on your position, and fired twice in a row. It also had a Beam Saber attack which came out immediately, while all other Beam Saber attacks had a delay to offset their unblockable nature. For its super move, it had a combo attack that ended in a saber slice, meaning you had to dodge the last hit.
*** Battle Assault 2, the US exclusive, had all the previous bosses with no changes, plus two new ones from the Non-UC series included.\\
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[[MobileSuitGundamWing Gundam Epyon]] was a melee only suit, which means a lot of unblockable attacks, including its super move.\\
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But the grand champion in the series is [[MobileFighterGGundam the Devil/Dark Gundam]], which not only was giant like the Psyco, had attacks with a large amount of range, including an unblockable, full length laser attack.
*** The first, Japan-exclusive title, The Battle Master had [[MobileSuitGundam Big Zam]], [[MobileSuitGundam0083 Neue Ziel]], and [[OriginalGeneration Psyco Gundam Mk. III]]. Big Zam and Neue Ziel were giant, and had a large laser, but were otherwise no problem. Psyco Mk. III, however, had large range for most of its attacks, including its Beam Saber and a full body beam attack. It also had an uppercut that could take out half of one of your three health bars.
*** In the first released to the US, Battle Master 2/Battle Assault, all these bosses returned, and Psyco was made even harder. Though it lost its full-body beam, it still had its uppercut and Beam Saber, which, due to the way sabers work in this game, was now unblockable. And if you dodged it, you still took some damage due to the way the dodge system works in this game; don't dodge it and you took even more.\\
\\
And when you beat Psyco, you entered a match with the [[MobileSuitGundamTheLastOutpost Hydra Gundam]]. This one had a laser attack that didn't use up energy unlike all the other lasers in the game, homed in on your position, and fired twice in a row. It also had a Beam Saber attack which came out immediately, while all other Beam Saber attacks had a delay to offset their unblockable nature. For its super move, it had a combo attack that ended in a saber slice, meaning you had to dodge the last hit.
*** Battle Assault 2, the US exclusive, had all the previous bosses with no changes, plus two new ones from the Non-UC series included.\\
\\
[[MobileSuitGundamWing Gundam Epyon]] was a melee only suit, which means a lot of unblockable attacks, including its super move.\\
\\
But the grand champion in the series is [[MobileFighterGGundam the Devil/Dark Gundam]], which not only was giant like the Psyco, had attacks with a large amount of range, including an unblockable, full length laser attack.
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** Most boss battles on BattleOfZ are 4-on-1 fights where the boss is alone. However, the game gives quite a few advantages to the boss, such as a 1000% boost on their HP, massive boosts on all his stats (wich makes them even sturdier while making their moves strong enough to down you in seconds), and the ability to simply disappear and appear in the other side of the map. The main problem are the two other bonuses: infinite Energy and Super Armor. Not only bosses can throw in their super moves at will (wich will deal massive damage and they are completely invincible while doing so), as they can break out of your attacks and start a combo on you. They can also tech recover from anything, meaning that if the boss wants, he can break out of pretty much anything you might be doing. against it.
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*** Alpha has ''two'' EX Supers, one of them doing about 75% damage and being unblockable, the other doing less damage (only 50%!,) but still being unblockable and the only ''true'' full-screen attack in the game, meaning you have to be either knocked down or in the middle of some kind of teleport move to avoid it.
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* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionBeam special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
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* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionBeam WaveMotionGun special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
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* In the KatawaShoujo fan game, ''Katawavania'', after defeating Lillycula, you go up against her [[StrongerSibling older sister]] Akira. Akira can frequently FlashStep around the arena, often behind you, with little to no warning, has several attacks that are difficult to avoid (such as homing missiles and a beam rifle that can only be dodged by sliding at the precise moment it fires), and has virtually no telegraphing or pattern. The second ending indicates that the creator was not expecting many people to defeat this "unfair" boss.
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* In the KatawaShoujo fan game, ''Katawavania'', after defeating Lillycula, you go up against her [[StrongerSibling older sister]] Akira. Akira can frequently FlashStep around the arena, often behind you, with little to no warning, has several attacks that are difficult to avoid (such as homing missiles and a beam rifle that can only be dodged by sliding at the precise moment it fires), and has virtually no telegraphing or pattern. The second ending indicates that the creator was not expecting many people to defeat this "unfair" boss.boss.
* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionBeam special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
* LittleFighter2 has Firzen and Julian. The former is one of the fastest characters in the game and has a large range of hi-damage homing attacks, including a powerful ice/fire explosion that can't be interrupted, has a massive attack radius and fires homing projectiles. Julian has a WaveMotionBeam special with absolute priority, extremely powerful basic projectiles with slight homing abilities and another massive explosion, and he also has to be hit twice in rapid succession before he'll take damage or even flinch. In Stage Mode, you fight both of them with a small army, and even then your chances are slim.
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** This is made even worse with Marie 300% in ''Encore'', as she has triple her starting health, and is locked to Nightmare Difficulty.
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* [[SuperpoweredEvilSide Shadow Jago]], the TrueFinalBoss of ''VideoGame/KillerInstinct'' (2013) on Xbox One, added along with the Fulgore update. As a playable character, Shadow Jago [[PaletteSwap is simply a different skin for Jago with a unique voice pack]]. However as a boss, he's a completely different beast, with different moves and move properties (as well as the only [[FinishingMove Ultimate Combo]] in the game to boot). To even get to him, you must first have all three of a character's endings unlocked then beat Arcade Mode on Medium whilst scoring as many Supreme and Ultra victories as possible. Get to him and get ready for a hell of a fight (even on Medium), as Shadow Jago's adaptive AI properties allow him to react swiftly to repetitive strategies. If not for his overpowered moveset, Shadow Jago might not even qualify (as he's hard because the computer plays him really well) but since his attacks are all buffed up he's still such.
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* [[SuperpoweredEvilSide Shadow Jago]], the TrueFinalBoss of ''VideoGame/KillerInstinct'' (2013) on Xbox One, added along with the Fulgore update. As a playable character, Shadow Jago [[PaletteSwap is simply a different skin for Jago with a unique voice pack]]. However as a boss, he's a completely different beast, with different moves and move properties (as well as the only [[FinishingMove Ultimate Combo]] in the game to boot). To even get to him, you must first have all three of a character's endings unlocked then beat Arcade Mode on Medium whilst scoring as many Supreme and Ultra victories as possible. Get to him and get ready for a hell of a fight (even on Medium), as Shadow Jago's adaptive AI properties allow him to react swiftly to repetitive strategies. If not for his overpowered moveset, Shadow Jago might not even qualify (as he's hard because the computer plays him really well) well, which is [[PerfectPlayAI another trope]]) but since his attacks are all buffed up he's still such.
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* [[SuperpoweredEvilSide Shadow Jago]], the TrueFinalBoss of ''VideoGame/KillerInstinct'' (2013) on Xbox One, added along with the Fulgore update. As a playable character, Shadow Jago [[PaletteSwap is simply a different skin for Jago with a unique voice pack]]. However as a boss, he's a completely different beast, with different moves and move properties (as well as the only [[FinishingMove Ultimate Combo]] in the game to boot). To even get to him, you must first have all three of a character's endings unlocked then beat Arcade Mode on Medium whilst scoring as many Supreme and Ultra victories as possible. Get to him and get ready for a hell of a fight (even on Medium), as Shadow Jago's adaptive AI properties allow him to react swiftly to repetitive strategies. If not for his overpowered moveset, Shadow Jago might not even qualify (as he's hard because the computer plays him really well) but since his attacks are all buffed up he's still such.
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* Ohga from Technos Japan's ''VideoGame/VoltageFighterGowcaizer'' is bastardly.\\
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He has absurdly quick recovery time. His basic special moves consist of a very damaging triple uppercut, a teleport that causes damage if your character is in his path (and you will be), and a Kaiser Wave-esque projectile. This projectile is quite large, and can only be blocked or jumped over; attempting to cancel it out with your own projectile will cause it to burst into five seeking fireballs. Jumping over it also leaves your character to be a sitting duck for his triple uppercut. And his defense points are bigger than any normal characters and he may even do a sweep-triple uppercut combo which may as well take 80% of your health. Ouch.
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He has absurdly quick recovery time. His basic special moves consist of a very damaging triple uppercut, a teleport that causes damage if your character is in his path (and you will be), and a Kaiser Wave-esque projectile. This projectile is quite large, and can only be blocked or jumped over; attempting to cancel it out with your own projectile will cause it to burst into five seeking fireballs. Jumping over it also leaves your character to be a sitting duck for his triple uppercut. And his defense points are bigger than any normal characters and he may even do a sweep-triple uppercut combo which may as well take 80% of your health. Ouch.
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* Ohga from Technos Japan's ''VideoGame/VoltageFighterGowcaizer'' is bastardly.\\
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He has absurdly quick recovery time. His basic special moves consist of a very damaging triple uppercut, a teleport that causes damage if your character is in his path (and you will be), and a Kaiser Wave-esque projectile. This projectile is quite large, and can only be blocked or jumped over; attempting to cancel it out with your own projectile will cause it to burst into five seeking fireballs. Jumping over it also leaves your character to be a sitting duck for his triple uppercut. And his defense points are bigger than any normal characters and he may even do a sweep-triple uppercut combo which may as well take 80% of your health. Ouch.
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* ''VideoGame/MagicalGirlLyricalNanohaAsPortable: The Gears of Destiny'' has [[{{Moe}} Unbreakable]] [[BadassAdorable Dark]] in her FinalBoss form. Her attacks has ridiculous priority and does serious damage, her melee attacks has more reach than most of your characters, her ranged attacks cover a wide area, both her melee and ranged counters hit fast and hard, and unlike the player, her ManaMeter isn't drained by dashing or casting spells. The first round is particularly brutal as her game-best defense is augmented by a Super Armor that grants her a ManaShield and makes her ImmuneToFlinching while it's up, giving the player a sudden and overwhelming urge to introduce their PSP to the floor the hard way. The second round is a bit easier since it starts off with U-D without the Super Armor, but once you get rid of her life bar, [[TurnsRed she replenishes her health to full and gets her Super Armor back with two mana bars to blast through this time]], and she's effectively invulnerable for several seconds due to being in [[SuperMode Full Drive mode]]. However, the game shows some mercy at this point, as she has [[GlassCannon paper-thin defenses]] on this part of the round so the player could take her down before the timer runs out.
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* ''VideoGame/MagicalGirlLyricalNanohaAsPortable: The Gears of Destiny'' has [[{{Moe}} Unbreakable]] [[BadassAdorable Dark]] in her FinalBoss form. Her attacks has ridiculous priority and does serious damage, her melee attacks has more reach than most of your characters, her ranged attacks cover a wide area, both her melee and ranged counters hit fast and hard, and unlike the player, her ManaMeter isn't drained by dashing or casting spells. The first round is particularly brutal as her game-best defense is augmented by a Super Armor that grants her a ManaShield and makes her ImmuneToFlinching while it's up, giving the player a sudden and overwhelming urge to introduce their PSP to the floor the hard way. The second round is a bit easier since it starts off with U-D without the Super Armor, but once you get rid of her life bar, [[TurnsRed she replenishes her health to full and gets her Super Armor back with two mana bars to blast through this time]], and she's effectively invulnerable for several seconds due to being in [[SuperMode Full Drive mode]]. However, the game shows some mercy at this point, as she has [[GlassCannon paper-thin defenses]] on this part of the round so the player could take her down before the timer runs out.
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*** Metal Sonic is made slightly easier when you realize that most of those attacks are very noticeably telegraphed and can be sidestepped, but you still need to be at a fair distance in order to sidestep far enough to not get hit. It's still not very much help against his throw move and he STILL has a [[FrickenLaserBeams chest-beam]] that only has a split second of warning before execution....that is, YOUR execution [[DontExplainTheJoke because you'll be dead.]]
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* Alpha-152 in ''DeadOrAlive 4'', a superpowered Kasumi clone made of... [[WhatMeasureIsANonHuman something]] (Jello? Cool Mint Listerine? Just [[EnergyBeings plain energy?]]). She's unplayable and has a unique move set including combos (both combo melee attacks and combo grabs/throws) that can take down 2/3 of your health in one shot; even on "[[NintendoHard Easy]]" difficulty she takes serious players multiple attempts. She also has the annoying tendency to teleport out of your combos and launch into one of her own.
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* Alpha-152 in ''DeadOrAlive ''VideoGame/DeadOrAlive 4'', a superpowered Kasumi clone made of... [[WhatMeasureIsANonHuman something]] (Jello? Cool Mint Listerine? Just [[EnergyBeings plain energy?]]). She's unplayable and has a unique move set including combos (both combo melee attacks and combo grabs/throws) that can take down 2/3 of your health in one shot; even on "[[NintendoHard Easy]]" difficulty she takes serious players multiple attempts. She also has the annoying tendency to teleport out of your combos and launch into one of her own.
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** Before Alpha, there was Tengu in ''DeadOrAlive 2''. He returned in ''4'' as a balanced secret character, but in his original debut game he was a bastard. His AI was almost completely omniscient and would counter '''everything'''. His moves did tremendous damage, yes, but he had one move that skyrocketed him to boss territory: he charges up and creates a giant gust of wind around himself, knocking the opponent away. He would do this move ''all the time'', and it was also unblockable.
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** Before Alpha, there was Tengu in ''DeadOrAlive ''VideoGame/DeadOrAlive 2''. He returned in ''4'' as a balanced secret character, but in his original debut game he was a bastard. His AI was almost completely omniscient and would counter '''everything'''. His moves did tremendous damage, yes, but he had one move that skyrocketed him to boss territory: he charges up and creates a giant gust of wind around himself, knocking the opponent away. He would do this move ''all the time'', and it was also unblockable.
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*** In the UpdatedRerelease, ''DeadOrAlive 2 Ultimate'', he gains a new CPU-exclusive move for his exclusive stage which cannot be accessed: he can change the weather. It's ''really'' distracting and it can hurt your eyes if you're not prepared for it. And while he's doing this he can charge at you freely.
** After Tengu, Ayane's foster father Genra/Omega made his debut in ''DeadOrAlive 3''. First, you fight him in [[InterfaceScrew a really weird camera angle]]. Secondly, the fire around his stage makes everything super-blurry so you can't see his attacks. Finally, one of his attacks has to be jumped over, which is easier said than done.
** After Tengu, Ayane's foster father Genra/Omega made his debut in ''DeadOrAlive 3''. First, you fight him in [[InterfaceScrew a really weird camera angle]]. Secondly, the fire around his stage makes everything super-blurry so you can't see his attacks. Finally, one of his attacks has to be jumped over, which is easier said than done.
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*** In the UpdatedRerelease, ''DeadOrAlive ''VideoGame/DeadOrAlive 2 Ultimate'', he gains a new CPU-exclusive move for his exclusive stage which cannot be accessed: he can change the weather. It's ''really'' distracting and it can hurt your eyes if you're not prepared for it. And while he's doing this he can charge at you freely.
** After Tengu, Ayane's foster father Genra/Omega made his debut in''DeadOrAlive ''VideoGame/DeadOrAlive 3''. First, you fight him in [[InterfaceScrew a really weird camera angle]]. Secondly, the fire around his stage makes everything super-blurry so you can't see his attacks. Finally, one of his attacks has to be jumped over, which is easier said than done.
** After Tengu, Ayane's foster father Genra/Omega made his debut in
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It\'s not Retraux since it\'s not trying to look old fashioned, and it\'s definitely NOT a remake.
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** The {{Retraux}} remake of ''Punch-Out'' for the Wii does not have Mike Tyson (obviously, considering several controversies), but it has something even better. [[spoiler:VideoGame/DonkeyKong.]] Mr Sandman also seems to have carried over Tyson's mannerisms for the fight against him.
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** The {{Retraux}} remake reboot of ''Punch-Out'' for the Wii does not have Mike Tyson (obviously, considering several controversies), but it has something even better. [[spoiler:VideoGame/DonkeyKong.]] Mr Sandman also seems to have carried over Tyson's mannerisms for the fight against him.
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* Metal Sonic of ''VideoGame/SonicTheFighters'' will grind you into the steel floor of his stage. Faster and stronger than regular characters, his grab involves dropping you from the air to take out a little more than a quarter of your health, and he even rips off [[StreetFighter M. Bison's]] Psycho Crusher for devastating effect. Think you can cheese your way past him by breaking all of his barriers? Doing that only [[TurnsRed pisses him off]] to the point where he spams the aforementioned Psycho Crusher (which is unblockable, by the way). Makes it all the more satisfying when you achieve Super Sonic and smash his face in. Robotnik? AnticlimaxBoss.
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* Metal Sonic of ''VideoGame/SonicTheFighters'' will grind you into the steel floor of his stage. Faster and stronger than regular characters, his grab involves dropping you from the air to take out a little more than a quarter of your health, and he even rips off [[StreetFighter [[Franchise/StreetFighter M. Bison's]] Psycho Crusher for devastating effect. Think you can cheese your way past him by breaking all of his barriers? Doing that only [[TurnsRed pisses him off]] to the point where he spams the aforementioned Psycho Crusher (which is unblockable, by the way). Makes it all the more satisfying when you achieve Super Sonic and smash his face in. Robotnik? AnticlimaxBoss.
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* In ''[[{{VideoGame/Aquapazza}} Aquapazza]]'', the final boss is Ma-ryan and a main character of her choice depending on who your main character is. In addition to her normal partner attacks, she has [[SecretAIMoves Super Move variants of those attacks]] that she can unleash at any time. Her partner is an emotionless shadow clone of one of the main characters and doesn't experience any fluctuations in strength during the match like your character does. Finally, if she winds up on the losing end of a beatdown that would otherwise decide the match, she can ''rewind time'' to recharge her main fighter's health to 50% to delay/deny your victory.
** Then you face Chizuru in Another Story mode, who is by far the strongest LightningBruiser in the game. One of her special attacks even involves a textbook SpeedBlitz. If you're not careful, she can combo and fling you all around the screen to your death in a matter of seconds.
** Then you face Chizuru in Another Story mode, who is by far the strongest LightningBruiser in the game. One of her special attacks even involves a textbook SpeedBlitz. If you're not careful, she can combo and fling you all around the screen to your death in a matter of seconds.
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* In ''[[{{VideoGame/Aquapazza}} Aquapazza]]'', ''{{VideoGame/Aquapazza}}'', the final boss of Story Mode is Ma-ryan and a main character of her choice depending on who your main character is. In addition to her normal partner attacks, she has [[SecretAIMoves Super Move variants of those attacks]] that she can unleash at any time. Her partner is an emotionless shadow clone of one of the main characters and doesn't experience any fluctuations in strength during the match like your character does. Finally, if she winds up on the losing end of a beatdown that would otherwise decide the match, match and has 3 or more stocks of Super Meter, she can ''rewind time'' to recharge her main fighter's health to 50% to delay/deny your victory.
** Then you face Chizuru in Another Story mode, who is by far the strongest LightningBruiser in the game. One of her special attacks even involves a textbook SpeedBlitz. If you're not careful, she can combo and fling you all around the screen to your death in a matter of seconds. \n On top of that, her health and Super meter constantly charge throughout the battle.
** Then you face Chizuru in Another Story mode, who is by far the strongest LightningBruiser in the game. One of her special attacks even involves a textbook SpeedBlitz. If you're not careful, she can combo and fling you all around the screen to your death in a matter of seconds.
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* ''EternalFighterZero'', an otherwise very balanced doujin game, has [[VisualNovel/{{AIR}} Kanna]] as the final boss. Her melee attacks have immense range and her projectiles are fast and cover a lot of area. Her AI is also incredibly skilled at blocking attacks, making it difficult to land any normal hit. Her character is available to the player as well, without any nerfing at all, which is why she's banned from tournament play.
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* ''EternalFighterZero'', ''VideoGame/EternalFighterZero'', an otherwise very balanced doujin game, has [[VisualNovel/{{AIR}} Kanna]] as the final boss. Her melee attacks have immense range and her projectiles are fast and cover a lot of area. Her AI is also incredibly skilled at blocking attacks, making it difficult to land any normal hit. Her character is available to the player as well, without any nerfing at all, which is why she's banned from tournament play.
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This, is not true at all. Play the two games or watch video clips of them.
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* ''VideoGame/SuperSmashBros. Brawl'''s Adventure mode did an acceptable job with bosses, right up until the last one, [[spoiler: Tabuu.]] He has moves that do an insane amount of damage, can teleport, usually right before you get to him after recovering from said attack, has an insane amount of health, and has a move that some StreetFighter players might recognize from Gill. It looks exactly like his Seraphic Wing attack, and it does the same thing - instantly kills you (though you can avoid it if you dodge ''three times in a row'', expertly timed and all). (This attack is officially called "Off Waves".) It's interesting to note, though, that all of his attacks bar the latter come from the Kirby character, Marx. At least you get SIX lives/characters in Subspace Emissary to tackle him. However, Sakurai had to be a bastard. In BossRush mode, you only get one life. Good luck beating it on Intense, as per one of the [[HundredPercentCompletion challenges]] that can't be bypassed with a Golden Hammer (except in the PAL versions). The only saving grace is that, in Boss Rush mode, the bosses are toned down from the same difficulty equivalents of Subspace Emissary mode. That is, fighting Tabuu in Intense in SSE is even harder than doing it in Intense in the Boss Rush mode. This is ''because'' of the aforementioned extra 'lives' thing you get in SSE. This manifests in the form of increased health and speed for the bosses in SSE.
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* ''VideoGame/SuperSmashBros. Brawl'''s Adventure mode did an acceptable job with bosses, right up until the last one, [[spoiler: Tabuu.]] He has moves that do an insane amount of damage, can teleport, usually right before you get to him after recovering from said attack, has an insane amount of health, and has a move that some StreetFighter players might recognize from Gill. It looks exactly like his Seraphic Wing attack, and it does the same thing - instantly kills you (though you can avoid it if you dodge ''three times in a row'', expertly timed and all). (This attack is officially called "Off Waves".) It's interesting to note, though, that all of his attacks bar the latter come from the Kirby character, Marx. At least you get SIX lives/characters in Subspace Emissary to tackle him. However, Sakurai had to be a bastard. In BossRush mode, you only get one life. Good luck beating it on Intense, as per one of the [[HundredPercentCompletion challenges]] that can't be bypassed with a Golden Hammer (except in the PAL versions). The only saving grace is that, in Boss Rush mode, the bosses are toned down from the same difficulty equivalents of Subspace Emissary mode. That is, fighting Tabuu in Intense in SSE is even harder than doing it in Intense in the Boss Rush mode. This is ''because'' of the aforementioned extra 'lives' thing you get in SSE. This manifests in the form of increased health and speed for the bosses in SSE.
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[[folder:Other Commercial Fighting Games]]
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[[/folder]]
[[folder:Doujin Fighters/Fan-made Games]]
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[[AC:Doujin Fighters/Fan-made Games]]
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* In the KatawaShoujo fan game, ''Katawavania'', after defeating Lillycula, you go up against her [[StrongerSibling older sister]] Akira. Akira can frequently FlashStep around the arena, often behind you, with little to no warning, has several attacks that are difficult to avoid (such as homing missiles and a beam rifle that can only be dodged by sliding at the precise moment it fires), and has virtually no telegraphing or pattern. The second ending indicates that the creator was not expecting many people to defeat this "unfair" boss.
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* In the KatawaShoujo fan game, ''Katawavania'', after defeating Lillycula, you go up against her [[StrongerSibling older sister]] Akira. Akira can frequently FlashStep around the arena, often behind you, with little to no warning, has several attacks that are difficult to avoid (such as homing missiles and a beam rifle that can only be dodged by sliding at the precise moment it fires), and has virtually no telegraphing or pattern. The second ending indicates that the creator was not expecting many people to defeat this "unfair" boss.
[[/folder]]boss.
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[[folder:Other Commercial Fighting Games]]
* ''Mighty Morphin' Power Rangers: The Fighting Edition'' has [[Film/MightyMorphinPowerRangers Ivan Ooze]]: he's unaffected by gravity, can't be thrown, has a normal attack which knocks the opponent clear across the screen if not blocked, his other moves (3 normals and 2 specials) are all projectiles, with the specials being multiple homing projectiles (with priority over ALL OTHER FIREBALLS), and one of his specials makes him invincible for about 2 seconds. So what's supposed to offset these advantages? He can't block, and he has no super. Too bad his invincibility special more than makes up for not being able to block, and his specials do so much damage that he doesn't need a super.
** To wit: Ivan Ooze can do his invincible DP out of hitstun. You HIT him -- and he hits you right back.
** Lord Zedd, who you fight before Ooze, could simply teleport whenever he wanted, even when he's blocking or being hit, meaning combos and hypers were useless against him.
* Alpha-152 in ''DeadOrAlive 4'', a superpowered Kasumi clone made of... [[WhatMeasureIsANonHuman something]] (Jello? Cool Mint Listerine? Just [[EnergyBeings plain energy?]]). She's unplayable and has a unique move set including combos (both combo melee attacks and combo grabs/throws) that can take down 2/3 of your health in one shot; even on "[[NintendoHard Easy]]" difficulty she takes serious players multiple attempts. She also has the annoying tendency to teleport out of your combos and launch into one of her own.
** Certain characters have an easier time fighting her than others. Quicker characters and characters that are difficult to read (Helena, Brad) can adjust to her teleport attacks quicker, not to mention the ability to just rush at her and get a few moves off before she teleported again.
** The worst part about her, not yet mentioned, is her abuse of attack range and PerfectPlayAI. She stays just out of range of your (standard) attacks. When you try to hit her and your attack falls short, she'll nail you for the aforementioned 2/3 of your health while you're in cooldown. If you (try to) run in and attack, she'll either nail you before you get to the "attack" part, or teleport away. If you sit in defense, she'll move forward in a split second and hit you with a similarly overpowered grab combo before you have a chance to hit her.
*** This makes the best way to beat her a (partial; she's still not stupid) AIBreaker - attacks she doesn't think can hit her at the current range, but actually can. Typically, attacks involving some form of lunge. Strafing sideways before running in can also trip up her ranging avoidance.
** Before Alpha, there was Tengu in ''DeadOrAlive 2''. He returned in ''4'' as a balanced secret character, but in his original debut game he was a bastard. His AI was almost completely omniscient and would counter '''everything'''. His moves did tremendous damage, yes, but he had one move that skyrocketed him to boss territory: he charges up and creates a giant gust of wind around himself, knocking the opponent away. He would do this move ''all the time'', and it was also unblockable.
*** Tengu was actually really easy to beat if you learned his weakness: while the wind-gust maneuver cannot be blocked, it ''can'' be countered via the middle-punch counter, so long as you are somewhat close to him. The gust has a long wind-up time, giving you plenty of time to close the gap. What's more, Tengu loves spamming the gust when you're at range. So just counter the gust, back up so that you provoke another gust, run up during the wind-up and counter again, back up some more, etc. With this technique, you can easily beat Tengu with any character. Yes, exploiting the AI is cheap, but then so is Tengu.
*** In the UpdatedRerelease, ''DeadOrAlive 2 Ultimate'', he gains a new CPU-exclusive move for his exclusive stage which cannot be accessed: he can change the weather. It's ''really'' distracting and it can hurt your eyes if you're not prepared for it. And while he's doing this he can charge at you freely.
** After Tengu, Ayane's foster father Genra/Omega made his debut in ''DeadOrAlive 3''. First, you fight him in [[InterfaceScrew a really weird camera angle]]. Secondly, the fire around his stage makes everything super-blurry so you can't see his attacks. Finally, one of his attacks has to be jumped over, which is easier said than done.
*** Not to mention - trying to use a throw on him lowers YOUR health. Also, if he gets hit and falls, he unleashes a short flame wave, which takes some of your health, if not blocked.
** This all falters in the face of Dead or Alive: Dimension's brand new "Tag Challenge" mode. It starts off innocuous enough, but the final five fights have you play against a beefed-up Kasumi clone named Kasumi Alpha, all of the bosses in Dead or Alive history, AND a brand new boss in the form of [[spoiler: supreme Mugen Tenshin clan badass and father of basically every ninja in the game, Shiden, who pulls so many moves out of his ass it's sheer baffling.]] Add to everything that they take majorly reduced damage and can take away up to 75% of your health from an accidental tag, and the fact that you have two characters to even the odds barely matters.
* ''BushidoBlade 2'' has, if the player plays the story mode as a Shainto clan character, a penultimate boss that instantly teleports away, without a scratch, if 'hit'. The only way to kill him is to keep making him teleport, as each time he does, he reappears closer and closer to the player, and you have about a second-long window to gut him before he stands up and readies himself. Of course, if you die (which is easy, since your character is a potential OneHitPointWonder) the process starts over. Almost as if to make up for this pain-in-the-ass opponent, the Shainto's final enemy is [[AntiClimaxBoss an unarmed girl who doesn't even fight back]].
** All characters, Shainto or not, eventually have to go up against someone armed with a gun, while the player has only a melee weapon. The guy with a gun was in the original ''Bushido Blade'' as well, and had this irritating tendency to backflip away if the player got close. The trick was simply to run around until he'd fired six times. Guns need reloading, swords don't, and his defense is pathetic. But be warned. The first time you fight him, he ''will'' [[WhyDontYaJustShootHim Just Shoot You]].
* ''Matrimelee'', the revival installment of the ''VideoGame/PowerInstinct'' series, replaces Angela with a [[BewareTheNiceOnes not even less 'cutie']] [[RichBitch Princess Sissy]]. A seemingly harmless young girl, she can conjure many different things from her magical box. One of her most annoying tactics is constantly bringing out [[LiteralGenie Abubo]] from ''Rage of the Dragons'' that swings his fists around, so they would get you in '''both''' air and ground. She regularly does this when the opponent is anywhere nearby her. This guarantees that you will be unable to get close to her unless you keep trying incessantly, are a pro and/or exploit her rather simple AI. But it doesn't end on Abubo. She also has [[strike:drill]] [[ChainsawGood chainsaw boots]], a purple bomb, an uncancellable frog projectile and even a [[strike:booby trap spike]] sword. And, to finish your attempts to marry her '''off''' once and for all, Sissy's arsenal includes a '''FUCKING''' annoying and unblockable [[spoiler:(Although, you know... it's [[DoubleJump overjumpable]], thankfully)]] super where she shoots a raygun at you and turns you into a '''FROG'''. ...oh, and she's [[strike:almost]] [[HitboxDissonance unhittable when she attacks]].
** On a side note, she's still damn hard to beat even if you're playing at the easiest difficulty. Yeah, even '''as''' Sissy. And even in Bloodlust Fight mode.
* Groove On Fight has Bristol, the final boss. His first form is fairly harmless - does high damage with leg-based attacks, but nothing too terribly nasty. Then he turns into a demon after being [=KOed=]. And things get worse, as he gains a slew of attacks that have incredible priority, come out monstrously fast and do entirely too much damage. His Super does a ton of damage and can chip you away if you block it. And he buttonreads. Welcome to hell.
* ''VideoGame/SuperSmashBros. Melee'' has '''Giga Bowser''', a character who not only exceeds all playable characters in size, weight and reach, but also ''cannot be grabbed'' like regular characters.
* ''VideoGame/SuperSmashBros. Brawl'''s Adventure mode did an acceptable job with bosses, right up until the last one, [[spoiler: Tabuu.]] He has moves that do an insane amount of damage, can teleport, usually right before you get to him after recovering from said attack, has an insane amount of health, and has a move that some StreetFighter players might recognize from Gill. It looks exactly like his Seraphic Wing attack, and it does the same thing - instantly kills you (though you can avoid it if you dodge ''three times in a row'', expertly timed and all). (This attack is officially called "Off Waves".) It's interesting to note, though, that all of his attacks bar the latter come from the Kirby character, Marx. At least you get SIX lives/characters in Subspace Emissary to tackle him. However, Sakurai had to be a bastard. In BossRush mode, you only get one life. Good luck beating it on Intense, as per one of the [[HundredPercentCompletion challenges]] that can't be bypassed with a Golden Hammer (except in the PAL versions). The only saving grace is that, in Boss Rush mode, the bosses are toned down from the same difficulty equivalents of Subspace Emissary mode. That is, fighting Tabuu in Intense in SSE is even harder than doing it in Intense in the Boss Rush mode. This is ''because'' of the aforementioned extra 'lives' thing you get in SSE. This manifests in the form of increased health and speed for the bosses in SSE.
* The eponymous Eternal Champion from the [[SegaGenesis Genesis]] fighter game ''EternalChampions''. Not only is he as strong as him being on this list would imply, you have to beat him five times in one round, and each time he uses a different (but equally painful) move set.
** And if you were lucky enough to get ahold of ''Eternal Champions CD'', the Sega CD version, you had to do it not once, but ''twice''. ''Then'' you also went up against the Dark Champion, who had the same annoying multiple-self-resurrection abilities, complete with moves relating to natural disasters with which he just wouldn't let up at all. Oh, and that's without mentioning the fact that the computer in the last game [[TheComputerIsACheatingBastard can ignore the game's rules]] by spamming their special attacks, despite having an apparently functional "Inner Spirit" gauge, which was thankfully taken out in the second game. The Champions in particular like to repeatedly Insult you, destroying your ability to use special attacks while using their own invincible-ground-sweeping abilities... over and over and over.
** Getting to the final set of fights on Champion mode leads to the Dark Champion [[BadassInDistress kidnapping the Eternal Champion]]. You get to fight the Dark one as the Eternal one in what can be an absolutely epic fight, were it not for the Dark Champion being damn hard. The worst part is you only get one chance to win the last battle, or you have to start the whole game again.
* From the ''VideoGame/ArcanaHeart'' series:
** Mildred. In her first form (from story mode), you have one round to beat her or lose. She doesn't actually '''move''', but she effortlessly attacks you from across the screen with massive knockback attacks that are undodgeable (but, fortunately, not unblockable) and has an insanely high defense -- if you can actually manage to get close enough to damage her beyond projectile chipping. If you lose against this form -- which is essentially inevitable if you have a character/arcana combo that has useless projectiles or none at all -- you get a second form where she has access to all the best moves in the game, (including giving her regular special moves that are supers for anyone else that uses them) she has a dangerous new super that does nearly half a health bar in damage if not blocked and hits the entire screen, she has mid-air and ground recovery that instantly leaves her standing up on ground level, she starts with a full super meter and she has a defense nearly as good as the first form. Oh, and you can't win via time-out. Otherwise, she [[spoiler:merges the two worlds, resulting in the implied deaths of millions.]] Of course, you can avoid this just by setting the game timer to infinite. A catch, though: if you ''do'' beat the first form, you instead get... the exact same battle, but the boss starts out with an empty super meter instead. Long story short: if the MarySue trope could be applied to an SNK Boss, Mildred would be A-number-one on the list.
** ''VideoGame/ArcanaHeart 2'' gives us the somewhat less frustrating Angelia. In arcade mode, she simply plays like a smart computer opponent (including her annoyingly effective but technically sound "Halo Dash->Halo Super" tactic) and doesn't seem to use her arcana ''at all''... but she still [[TheComputerIsACheatingBastard doesn't seem to have charge her halo dash attack]], since she can and does use it ''constantly'' (especially during attack clashes). In ''Story mode'', on the other hand, she uses the same tactics, but her arcana (Mildred, incidentally) is always active, meaning Mildred launches attacks on her own pretty much independently. In addition Angelia also has a certain unavailable-to-players super where she... drops a building on you. Seriously. Needless to say, it's unblockable and does over half a health bar of damage, though she thankfully only uses it infrequently.
** In Sugoi! Arcana Heart 2, players can use Angelia's building drop super. Also, in Story Mode, there is a new hidden boss named Parace L'Sia, who makes Mildred from the original look like a gigantic joke. She fires projectiles with reckless abandon, has absolute priority on all of her moves, regenerates damage, and most of her supers are a ''OneHitKill''! One of her supers is a projectile that goes off five seconds after it hits you, suddenly dealing insane damage and putiting you into hit-stun - even when you're in the middle of a combo or blocking a multi-hit attack. Just to make things worse, she continuously regenerates her super meter, and has another move where she goes into a cocoon to accelerate its regeneration. The cocoon move only ends when her super meter is completely filled (at nine stocks) or if you attack the cocoon enough times to break her out of it - and none of your attacks will do any damage during this time. And she's still regenerating her health. She goes well beyond a typical SNK boss and acts more like a overpowered horrible MUGEN character.
** Arcana Heart 3 tops it off with first having you fight mid-boss Scharlachrot, who plays like Hazama with robot tigers that fire beam spam cannons. To wit, she attacks really aggressively, her Arcana (said robot tiger) can interrupt your combo by shooting you in the middle of it and set her up to combo you (and it will happen often). One of the Arcana supers are to fire a super powerful bullet capable of wiping out nearly 50% of your health, and her Arcana Blaze is to fire a frigging huge beam that goes upwards and will take out 50% even in chip damage. Oh, and beat her on the first round and she goes to activate PERMANENT Super Mode with boosted attack and defense. And did we mention that her Arcana bar usually regenerates in an unusually fast rate so you'll find yourself often facing that near-50% health powerful bullet? Win against her? Then prepare to fight Ragnarok, a HumongousMecha bent on destroying Japan and plays differently from the rest of the game on a 3-tiered battlefield - if you do not understand how to fight bosses like Onslaught, you're pretty much done for, and his main offense are two annoying flying funnels that constantly fly around you and interrupt your acts, not to mention BulletHell gallore or a beam rain unblockable. Much like Mildred, this is Do Or Die - run out of time and Japan gets blown sky-high. In short, the final boss is essentially made (overly) difficult not by its moves or its strategy, but by the fact that it basically converts the game into a side-scrolling platformer, while you're still saddled with the control scheme of a fighting game. If the spam attacks don't get you, the clock will simply run out while you're trying to jump up and hit that last weak point.
*** And if that wasn't enough, Parace comes back in the Score Attack mode of the Arcana Heart 3 console port. The good news is, she doesn't do nearly as much damage this time around (no more one-hit kills, at least). The bad news is, she doesn't ''need'' to because now she teleports around the arena like she's on crack, and can (and will) do long combos that will take out a huge chunk of your life! Worse, her AI is even more aggressive than before and she seems to button-read as well, since nearly any attack you do will be met with a better one that will set you up for a long combo. Fighting Parace in this game is like fighting [[{{MUGEN}} Rare Akuma]]. The only good thing about this fight is that if you actually manage to somehow ''hit'' Parace, you'll find she takes more damage than usual, but she still has auto-regen for her health. Its safe to say that Parace manages to take this trope to SerialEscalation levels, and considering most of what {{SNK}} themselves does with their bosses, that really says something.
*** One other thing. Unlike in Other Score attacks by arc System works, you have unlimited continues and with each try, Parace's health goes down with each one little by little. However, considering the above, '''You. Will. Need. Them!''' And the lower her health is, the more agressive she gets. Basically it's as if the development team ''knew'' how hard she would be and did that to try and compensate. If the score attack acted like other games, Parace would more then likely be downright unbeatable!
* ''Battle K-Road'' claims "Super Real Fighting". And who do you fight at the end of this game which features takedowns and such? A bear. Yes, a {{bear|sAreBadNews}}. Named Mr. Bear. Who has a Dragon Punch. And can knock most of your life off in one hit. Where's ''Tekken's'' Paul Phoenix when you need him...?
** Similar is ''Fighter's History Dynamite's'' hidden boss: you fight...an ox. And like Mr. Bear he'll likely stomp your rear end.
* Greed from ''VideoGame/TheRumbleFish''. The game and the character have to be described before going further. In ''The Rumble Fish'' there are two main gauges, Offense and Defense. The Offense gauge fills up as you attack, once it's maxed out you can initiate an Offensive art. You can also do Advanced Attacks, which takes half of the gauge and allows you to extend a combo. The Defense gauge fills up passively or by blocking attacks and Defensive arts are initiated from said gauge. It also allows for Impact Breaks, which is basically a counter, for half the gauge. Once both gauges are maxed out, they merge and become the Critical gauge. That allows for Critical arts, which are really strong super moves. Greed's Offense art allows him to combo his special moves into another one for a short period of time. Once you encounter him in Story Mode, he's just like his playable version. Until he literally ''TurnsRed''. From that point on, his gauge turns into the Critical gauge and is in a permanent state of his Offense art. Cue the SNK Boss: He can counter any of your attacks if he feels like it, combo from said counter with an Advance Attack and shell out a lot of damage by chaining his special attacks. Oh yeah, and he can also chain his Critical art from his specials. And if you corner him, he can just ''WallJump'' his way out to safety.
* Dural, in any given ''VirtuaFighter''. On one hand, it still counts if you beat the game without defeating her, but if you want to see the ''good'' ending, you have to win, and in ''4'' you only get one shot.
* The Jester from ''VideoGame/{{Ballz}} 3D'': teleporting, attacks from a long range, various tripping moves, and he resurrects himself when you knock him out once.
* The ''DynastyWarriors'' series' Lu Bu averts this trope in the same way that modern Akuma does -- he's an example of ThatOneBoss, but the only gameplay aspect unavailable to players is "hyper mode," which is not exclusive to him.
** His AI in ''[=DW3=]'' is actually worse than average: while he knows to use his first charge attack to make you stumble, almost every time he waits so long to attack you again that you can recover first. (Then you need only have low health for free Musou and the victory.)
** In Dynasty Warriors 4 they also start his incredible weakness to arrows (they murder him). This actually extends to the AI where in one situation he actually turned away from the player controlled max level Zhao Yun to brutally murder a random body-guard that shot him in the back of the head with an arrow.
** ''WarriorsOrochi'' series seems to make Lu Bu's AI even stupider. In the first game, he can easily be tricked into giving up Red Hare, and any decent player should have the cavalier up high, making your basic attacks against him pretty good. In the second he's worse as he will start laying into the Redshirts following once you've dismounted him, stolen Red Hare and given him distance. He'll use up Musou on these guys before coming at you.
** in DynastyWarriorsOnline every musou general, the playable character from the dynasty warriors games rather than a custom character, are SNK bosses for their unique bonuses, that are all achievable by players but not all at once. They are horribly dumb, and don't really pose a threat by simply being on the map, making it much calmer when they are around, but when you face one it's hell. Every single general has at least 3 advantages. 1. They all have at minimum hyper armor, meaning they only flinch at LimitBreak, and some have stronger, like Lu Bu, that means they don't flinch at even that. 2. Their stats are through the roof, they cause massive damage and can take attacks great, making them really lethal to be around, as they don't flinch easily it's hard to keep them from attacking and they are damage sponges. 3. They have flunkies that are not as powerful as them but still have the same resistance and rather upgraded stats for a mook. After all of that, they are hard to defeat, but they do have weaknesses, such as not having any special resistance to elements allowing them to be forcibly stunned or pushed. They can also be distracted easily, and you can get them off you by running into a crowd of either your own or bandit (hostile to both sides) mooks.
* The prototype of all 2-D {{Fighting Game}}s, ''KarateChamp''. Once a player reaches 8th Degree Belt level, the computer-controlled opponent becomes practically unbeatable, anticipating and countering a player's every move with frequency only a literal god of fighting could be expected to pull off.
* ''[[PunchOut Mike Tyson's Punch-Out!!]]'' ups the difficulty to ludicrous levels for the fight against the eponymous boxer--for the first two minutes of the fight, a single punch from the guy KO's you, and his weak spot is only exposed very rarely. Not to mention he acts lightning fast, giving you very little time to dodge and fight back. And there are no saves.
** When ''Punch-Out'' was re-released in the 90s, it replaced Tyson with a sprite-swap named Mr. Dream because Nintendo's contract with Tyson expired. His [=AI=] was replaced, too, but not in the good way. This was the version released on the Wii's Arcade.
** The {{Retraux}} remake of ''Punch-Out'' for the Wii does not have Mike Tyson (obviously, considering several controversies), but it has something even better. [[spoiler:VideoGame/DonkeyKong.]] Mr Sandman also seems to have carried over Tyson's mannerisms for the fight against him.
* The final incarnation of Rahu in the Gamecube ''VideoGame/CustomRobo''. Takes single-digit damage from nearly all weapons, moves fast enough that it can't be hit unless standing still, does ludicrous damage with his main gun that can't realistically be avoided unless you use one of the four pieces of cover in the holosseum, AND recovers ''instantly'' from all knockdown effects. That last one is the worst, because in this game, recovering from knockdown grants a few seconds of MercyInvincibility. Rahu gets all the benefits and is immune to the stun time normally associated with knockdown. Even outnumbering it three-to-one your chances of victory are slim. God help you if it decides to focus its attacks on you.
** "God help you"? No. You WANT Rahu to come after you. If he doesn't, he'll stomp your allies, and when he does finally come for you, you'll be powerless to stop him one-on-one. At least his attacks CAN be dodged (as difficult as it is).
** Any enemy with illegal parts can count as this to varying degrees. In-universe, illegal parts are illegal because they apparently put too much of a strain on the user's mind. Gameplay-wise, though, they're illegal because they're purposefully broken and unbalanced (naturally, every part used by Rahu's different stages are all illegal parts.)
* Chaos from ''DissidiaFinalFantasy'' is a great example of this trope. He attacks faster than any other character in the game by a wide margin, his attacks massively lower your Brave and increase his own, he chains his Brave attacks into his HP attacks, and while most of his Brave attacks are "melee", they send out shockwaves that exceed the size of the area where you fight him. When he uses Divine Punishment and Scarlet Rain, once he starts the attack, he becomes invincible. His Demonsdance attack chains together a massive string of bonecrushing hits, with several HP attacks ''in the combo!'' He also gets the Shinryu summon, which, unlike the player's summons, can be called as often as Chaos wants and his effect varies, because Shinryu mimics the other summons in the game! And he also has three forms, fully recovering HP each time while you're left at the amount you had. There's a catch, though: there's a flaw with his AI that makes him unable to avoid the final hit of [[VideoGame/FinalFantasyVII Sephiroth's]] octoslash HP attack, he'll dodge every slash except the one that actually does the HP damage, so if you feel like going slow and steady against him, you can turn even his [[HarderThanHard Inward Chaos form]] into a joke.
** Another way to make his Inward Chaos form disappointingly easy is to use Exdeath. Chaos's AI is so aggressive, that if you pull off an attack right at the start of the match, he'll counter with his own longer-ranged attack that probably overrides yours. Usually this is bad. However, it's funny to see him try this with Exdeath's Delta Attack, which forms a large barrier in front of Exdeath that blocks incoming attacks and staggers the enemy before striking them with a short beam for damage. This attack's beam is usually slow, unless it blocks and staggers with the barrier, in which case it'll fire off the beam a second later for a guaranteed hit. Equip Exdeath with every item you can that will get his starting Bravery to 9999, and just use Delta attack for each of the three rounds. Is Chaos really stupid enough to always instantly swipe into your staggering defensive barrier and get ravaged by a max-power Delta Attack, meaning you can beat him simply by pressing one button each round for three one-hit-K.O. victories? Spoiler: [[spoiler:Yes. A thousand times, yes.]] You will spend more time in the loading and victory screens than you will actually fighting Chaos.
** The second game features [[spoiler: Feral Chaos]] as the penultimate boss of the story mode's extra scenario, he defines unbelievable, most of his attacks have huge hitboxes, making them difficult to avoid, only one or two don't crush your guard. As if that's not enough, in a game where 9999 damage is the most you'll ever be able to do, he has '''60 THOUSAND HP''', and naturally, you can't use any of your items in the gateway you encounter him in, so cheaping out is impossible. His HP attacks drain your EX-gauge to emptiness, so using it is diffuclt. The real kicker comes after you finally manage to beat him, [[spoiler: the first fight was just a manikin]] you have to fight him again, this time he has more moves, an assist, and ''125 thousand health!'' (ironically, this form is actually weaker because he doesn't have as much defense). To top it all off, ''He's unlockable''. And in a frustrating case of TheComputerIsACheatingBastard, has all of the same limitations as a player character usually does, and more (No assists, ex gauge, and brave constantly depletes until you get abilities that fix that).
* General from Taito's ''GlobalChampion'' [[http://www.youtube.com/watch?v=aod5YACZ5vI versus a ''Guilty Gear XX'' champion from Japan]]. [[http://www.youtube.com/watch?v=1Lhgx14NReA Even SSFII Turbo's Shin Akuma isn't comparable to him]].
** Forget MUGEN, this guy is basically '''the''' hardest boss throughout all fighting games since its release. [[http://www.youtube.com/watch?v=Lcn7LuXSrD0 Observe.]] For further proof? Even the writers from game magazines ''gave up'' to write strategies against him.
* Ohga from Technos Japan's ''VideoGame/VoltageFighterGowcaizer'' is bastardly.\\
\\
He has absurdly quick recovery time. His basic special moves consist of a very damaging triple uppercut, a teleport that causes damage if your character is in his path (and you will be), and a Kaiser Wave-esque projectile. This projectile is quite large, and can only be blocked or jumped over; attempting to cancel it out with your own projectile will cause it to burst into five seeking fireballs. Jumping over it also leaves your character to be a sitting duck for his triple uppercut. And his defense points are bigger than any normal characters and he may even do a sweep-triple uppercut combo which may as well take 80% of your health. Ouch.
* ''RumbleRoses''. When you play through the story mode of any character, eventually you fight someone called Lady X. Which looks like a woman in a pantsuit with a metal mask and metal gloves. While she's obviously strong, has strong moves and is hard to humiliate (yeah, that's part of the game); she's not overpowered. Then when you beat her, the pantsuit comes off... [[RoboticReveal and you realize it's a cyborg]]. Now Lady X Substance is suddenly way stronger and almost impossible to humiliate... and can do weird cyborg stuff. She has unique moves that other characters couldn't do as they involve her upper body turning 180 degrees, her fist can detach from her arm and let her do a [[RocketPunch ROCKET PUNCH]]... and here's the worst part: All characters have "taunts" which build up their special meter a little but cause no harm to the enemy. HER taunt involves her body [[SpinAttack turning around like mad (and playing an alarm) and she quickly runs around the ring]]. If she touches you, you fly off with HIGH damage... and all you can do is avoid her. AND the taunt fills her meter completely.
** You get a few seconds to step out of the ring when you see her preparing the taunt.
* Young Toguro is the final boss of the generally substandard ''Manga/YuYuHakusho: Dark Tournament'', and has powers to match. Bear in mind that the previous fights were against very strong characters, but ones with normal restrictions. Toguro has [[LightningBruiser insane speed and power]], about a two-head height (and therefore a very large reach) advantage, a three-kick counter, and at least two combos that can put you down in no time flat. Both include low blows, forcing you to block while crouching - a difficult position from which to retaliate. And once you deplete his first health meter, he [[SuperMode powers up]] with a second one and becomes much more aggressive.
* ''VideoGame/DragonBallZBudokai 2''. Dragon World mode and Kid Buu, who among other things, was pretty much unblockable.
** It got worse in ''Budokai Tenkaichi''. Kid Buu has a Blast 2 move which is a long and crazy combo with nasty priority that the AI LOVES to spam in BT2. Then there's Android 13, whose super form has a normal Blast 2 that is XBOX HUGE, there's Broly who is surprisingly fast for a huge guy, Syn Shenron/Omega Shenron/Yi Xing Long, whose attacks have vicious priority and worst of all, Cell, who is just plain horrible.
** In ''Budokai 3'' Kid Buu not only gains an Ultimate Attack, but the new Ki system means he starts with 6 bars (whereas you generally start with 3). And to top it all off, to unlock Uub, [[GuideDangIt you must fight him down to 1 bar (difficult itself on later difficulties), then go back to Kaioken or base form (unless you'd been fighting there the entire time. Again, difficult), and THEN use the Super Spirit Bomb technique and WIN the power struggle.]] Note: If you lose the power struggle, he dies anyway. And you don't get Uub.
*** And that's not even to mention Uub vs. Omega Shenron on the hardest difficulty... or Omega Shenron in any of the story modes, for that matter. "30 Seconds to kill him AND do it using my Ultimate Move? WTF?!"
* Final Boss Gaara from ''[[Manga/{{Naruto}} Clash of Ninja 2]]'', who, among other things, [[ImplacableMan could not be staggered]]. No, not by any hit. No, not even then.
** Then, in Clash of Ninja Revolution 2, we have Kabuto as the final boss. He staggers. SOMETIMES. He'll usually knock you out of any combos, and even when you DO make him stagger (usually a low or high attack does it) he'll Substitute out of it, THEN combo YOU! Also, not mention he has a HealingFactor, which is actually normal, but the fact that he can't be staggered DRASTICALLY increases the effect of it, since usually the amount of HP he can recover goes down upon waking up from knockdown. Also, you need to finish him with Rasengan, which is hard to hit with and surprisingly weak.
** And Kabuto again in Ultimate Ninja 2. Fucker heals himself, stays out of your reach and god help you if you're using Kakashi, who as of the game's storyline, is unable to use any of his ultimate jutsu.
** And then we have Deidara from Clash of Ninja Revolution 3. You play as One-Tailed Naruto, which sounds like it should be easy, but it's not, because you're health goes quick and Deidara likes to spam his bug "art", which does a lot of damage. And if you're on hard mode, prepare to eat your Wiimote. And unless my copy is glitched, you have to beat him WITH your Ultimate, which means you have to be close. If you kill him with any thing else, you still lose! Damn it Deidara!
** In ''NarutoShippudenUltimateNinjaStorm2'', we have surprisingly, the Boss fight with Kakuzu, and the last phase of the boss fight with Pain:\\
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Kakuzu starts off relatively easy, but then he goes OneWingedAngel, and you have to be able to reach up to him while he's attached in between two trees, while he's spamming projectiles, like wind blasts, fire balls, and tentacles made of his Earth Grudge Fear bloodline that pop out of the ground really quickly, then finishes off with a Fire and Wind combined technique that's basically a Humongous LASER that can do a severe amount of Multi-Hit damage if it hits. And the fact that it takes much longer is more Dragged out than the other boss fights before it shows how hard it is. Unlike Pain, who's supposed to be hard as a final boss, Kakuzu's Surprise Difficulty also makes him ThatOneBoss.\\
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For Pain, the full amount of difficulty really starts to show. Pain is now in full awakening mode, but to tap it all of, because Bosses have infinite chakra, they can spam [[ScrappyMechanic Substitution Jutsu]] as many times as they want, as a Substitution bar didn't existed until Generations, and unlike the previous boss battles, [[OhCrap he will take advantage of this.]] His attacks also do ridiculous amounts of damage, and his AI goes up several times in level regardless what difficulty the AI is set on. He gets even harder when you loose [[SuperMode Sage Mode]], and your attacks start doing less damage.
** The final opponent in ''NarutoShippudenUltimateNinjaStormGenerations'', in [[JokeLevel Killer Bee's story]], is Kisame, with +100 attack. This roughly equates to all his attacks having the strength of an Ultimate Jutsu. Your best bet is not to let him hit you at all. And don't think you can relax once you've gotten his health down to 50%: his [[ComebackMechanic Awakening]] is... nasty, to put it mildly.
** And then ''Storm 3'' tops them all with the Reanimated Second Mizukage. Yes, '''[[FanNickname Trollkage]]''' is the game's SNKBoss, and his nickname has never been more fitting than in this game. Unlike the other characters above, he's an explicitly unplayable boss character, so the devs didn't even need to balance him. He basically takes all the annoyance of [[GetBackHereBoss Deidera]] and [[DopplegangerAttack Itachi]], ''combines them'', and [[UpToEleven somehow manages to makes them WORSE!]] He loves to spam streams of long-ranged water projectiles that go on ''far'' longer than any other ranged barrage (to the point where trying to block the the whole thing ''will break your guard''). Think you could stop that by getting close to him? Think again. He has an exploding Water Clone jutsu that works a lot like Itachi's (basically a moving barrier that explodes if you touch it), only ''it gets bigger the further it goes'', and it can chase you the entire length of the arena. And he also has a ''second'' clone attack that's easier to dodge, but much faster. The one saving grace the game gives you is that he does not appear to have an Ultimate. To top it all off, you have to fight him in essentially the middle of a BossRush with the ''other'' revived Kages, who are only marginally weaker than him. And after that you face (with no oppertunity to save)...
*** [[spoiler: The real]] Madara Uchiha, who has near PerfectPlayAI and some devastating attacks. Then again, this guy is practically an SNKBoss in-canon, so it's justified in his case. In fact, he's actually LESS of an SNKBoss in the game compared to in-canon, considering this version lacks [[spoiler:multiple massive meteor drop, instant knock-out plant pollen, and other moves.]]
* In ''Daraku Tenshi'', you get the wonderful chance to play against two powerful bosses. First, you've got Trigger, who has a gun. Keep in mind that only two playable characters have projectiles....but only ONE can use it infinitely, so just dealing with him alone can be a pain. And finally there's Carlos, who has a huge freakin' sword that can kill you in three or four hits alone. And if he hits you with his super, it's basically instant death. Yeah, did you know that people who worked on this game went to work on ''KingOfFighters 99''-2003? Not surprised?
* Rouge from ''Ranma 1/2: Battle Renaissance'' on PS1: Not only do her attacks have priority, but she has two degrees of a normal special attack where she flings countless projectiles at the player along the entire vertical axis. These WILL carry you up and back across the entire screen. Good luck surviving long enough to even get back into attack range.
* ''[[VideoGame/AsuraSeries Asura Blade]]'' has the sub-boss, Curfue. The best way to describe him is Cable on massive steroids and crack. He's got a laser rifle, grenades, a combat knife and at least two sidearms, and he uses them all to horrifically great effect. On you. A typical battle with Curfue is not unlike playing ''[[VideoGame/DonPachi DoDonPachi]]'' - there's so many lasers, bullets and apocalyptic explosions rocking the screen and turning you to ash, you have trouble figuring out what's going on. As if the chaos wasn't enough, Curfue's most damaging move must be blocked low or it'll wipe you out, and he's got a massively damaging close range grab that can take off nearly half your health. And he can use his super attack in midair, too, which is bad since it has no startup and comes out of nowhere.
* Kron, the final boss of PSX FightingGame ''CardinalSyn'', is a particularly ruthless example. The [[OneWingedAngel final form]] of the game's BigBad, [[NamesToRunAwayFromReallyFast Syn]], Kron is a ''freaking huge dragon'' who, in addition to sporting ridiculously powerful attacks (fire bombs, anyone?), possessing the ability to fly, and being so huge and powerful she takes ''much'' less damage than any other character, she also has a one-hit kill move (in which she ''bites the player character in half'') which she tries to utilise quite frequently. Also, the stage in which you fight her has an infinite time limit, which means that the player is unable to be a cheap bastard by simply getting a few hits in and staying out of her way until the timer runs out, out of pure desperation.
** Even worse, Kron can be unlocked as a ''playable character''. And when she's unlocked, the player can face her in ''any'' play mode. ''Including Survival Mode''. In which she's just as frustrating to fight as she is in Arcade Mode. Yup. Just ''try'' getting a good Survival win rate when you're facing her.
* Bloody Marie, the final opponent of VideoGame/{{Skullgirls}}. She can't block and she can't move while over 50% health, but she has [[ImmuneToFlinching permanent super armor]], meaning her attacks don't stop even when she's hit, she can't be grappled and soaks damage like crazy. But the worst is that, when very low on health, her hitbox becomes '''''minuscule''''', to the point that you can't hit her with most standing attacks and specials, which is a very big advantage for her since most of her moves are good anti-airs making a nearly impossible boss to beat with most characters (except Peacock fittingly enough) in the Pre-Patch version of the game. Even after the patch, however, which adds hitstun, and more visibility to her attacks, she remains a difficult boss to defeat.
* Metal Sonic of ''VideoGame/SonicTheFighters'' will grind you into the steel floor of his stage. Faster and stronger than regular characters, his grab involves dropping you from the air to take out a little more than a quarter of your health, and he even rips off [[StreetFighter M. Bison's]] Psycho Crusher for devastating effect. Think you can cheese your way past him by breaking all of his barriers? Doing that only [[TurnsRed pisses him off]] to the point where he spams the aforementioned Psycho Crusher (which is unblockable, by the way). Makes it all the more satisfying when you achieve Super Sonic and smash his face in. Robotnik? AnticlimaxBoss.
** Oh, yeah, and he has an attack that ''takes off half your health in a single strike''.
** Interestingly, Robotnik (or "Robotonic" by the intro) actually has some devastating moves, as evidenced by using a cheat device to unlock him. His status as an AnticlimaxBoss may have actually been a case of AI Stupidity. This is [[AllThereInTheManual explained]] as being because Robotnik has never used this particular machine before, so he doesn't know the controls yet. You also have only 15 seconds to beat him or you get a DownerEnding where the Death Egg blows up ''with you inside it.'' They ''had'' to make him a joke in order for it to be possible to ''win''.
* In the SD Hiryu mode from the N64 RPG/Fighter hybrid known as Flying Dragon, there's a boss known as Shin Ryumaou. Not only is his moveset cheap (featuring a speedy fireball move and a triple jump kick that almost always counters your combos), he's also equipped with a rare item that can hit you no matter where you are, is unblockable, and absorbs your HP. It doesn't stop there, because he also has three forms, and his second form is the worst. In his second form, he cannot be stunned half the time, none of your combos work on him, and above all, '''he revives nine times'''. Granted, the amount of HP restored decreases after his first revival, but this guy is an unbelievable hassle.
* Felden, from Sunsoft's fighting game ''Galaxy Fight'', was totally unbeatable. All his attacks had absolute priority and he could hit you from a character's lenght, while taking good chunks of healt.
* Makaitaitei Fernandez/[[SpellMyNameWithAnS Fernan]][[NamesToRunAwayFromReallyFast death]] from WakuWaku7. While he was a big target, he could hit you from a distance with all his attacks and they all hit hard.
** While all other characters had to charge their Hara Hara (unblockable max level super) attacks, Fernandez's Hara Hara comes out instantly, and he will use it whenever he feels like it.
* ''VideoGame/MagicalGirlLyricalNanohaAsPortable: The Gears of Destiny'' has [[{{Moe}} Unbreakable]] [[BadassAdorable Dark]] in her FinalBoss form. Her attacks has ridiculous priority and does serious damage, her melee attacks has more reach than most of your characters, her ranged attacks cover a wide area, both her melee and ranged counters hit fast and hard, and unlike the player, her ManaMeter isn't drained by dashing or casting spells. The first round is particularly brutal as her game-best defense is augmented by a Super Armor that grants her a ManaShield and makes her ImmuneToFlinching while it's up, giving the player a sudden and overwhelming urge to introduce their PSP to the floor the hard way. The second round is a bit easier since it starts off with U-D without the Super Armor, but once you get rid of her life bar, [[TurnsRed she replenishes her health to full and gets her Super Armor back with two mana bars to blast through this time]], and she's effectively invulnerable for several seconds due to being in [[SuperMode Full Drive mode]]. However, the game shows some mercy at this point, as she has [[GlassCannon paper-thin defenses]] on this part of the round so the player could take her down before the timer runs out.
* In ''Battle Assault 3: Featuring Gundam Seed'', we have the FinalBoss, Rau Le Creuset and his Providence Gundam. Now you fight him on the stage before, but you had an ally backing you up and it was just him with no time limit. This time however, you have no ally, there are about 4 of the strongest enemies preceding him and you have a time limit of around '''2 and a half minutes'''. Oh and just like the many examples above if you time out against him, even if you have more health than him, you lose because [[spoiler: the [[KillSat GENESIS]] fires, destroying the Earth]]. And even though he himself isn't SNK boss material, albeit he does love to use BeamSpam with his funnels and frequently uses his more powerful attacks, the fact that by the time you kill the previous enemies you're already scrambling for time and likely to make mistakes fighting him, causing him to kill you easier.
* ''VideoGame/{{Divekick}}'' features S-Kill as the final boss of story mode. He is playable normally, but the boss version has permanent Kick Factor, granting him infinite access to his Trick and Parry special moves. Trick instantly teleports him to the most optimal angle where his kick can reach you, while Parry allows him to block your attack and get a guaranteed Headshot, which dizzies you in the next round.
* The licensed games of ''Series/KamenRiderDragonKnight''
** In the Nintendo DS version of the game the final boss of every mode is Xaviax. He is constantly protected by a shield that reduces the damage of all of your attacks by over 50% and prevents him from flinching when you attack him and he has 3 super moves where he fires giant lasers at you that are nearly impossible to dodge. His third and most powerful laser attack WILL kill you in one hit. He fires five lasers; the first knocks you down- the other four hit you while you're down and helpless. Fortunately Xaviax can be unlocked for use without any decrease in power when you use him.
** The Wii version of the game will almost always have a fight against a Rider who is always in Guard Vent mode near the end of the Mirror World mode- the Rider in question will almost always be Strike or Sting; sometimes Thrust. Enemies in Guard Vent mode take half the damage from your attacks and never flinch when hit by your attacks. If you throw a punch, they will throw a punch without stopping and before you can react. Summoning your Advent Beast or using a Strike Vent card (if your character has one) can cause an enemy to flinch while in Guard Vent mode, but doing both requires using a lot of your special gauge and the latter can only be done once per fight.
* Wrestling/TheUndertaker, from the "Defeat the Streak" mode of ''WWE 2K14'' definitely qualifies. The match starts out normal, but the more damage you hit him with, [[AssPull the more powerful]] [[NewPowersAsThePlotDemands he becomes]]. Examples of this are the lights going out, 'Taker [[TeleportSpam Teleporting after being hit with a finisher]], countering pins into a chokeslam (as Retro 'Taker) or the Hell's Gate submission hold (as Modern 'Taker) and losing all damage inflicted to him. Fighting him with Batista, Wrestling/ShawnMichaels or even [[Wrestling/KevinNash Diesel]] is difficult as it is; trying to take him down with King Kong Bundy is damn near impossible.
** Retro Undertaker is slightly less SNK Boss-like than modern-day Undertaker -- he only counters pins into a chokeslam (as mentioned above) and can, in fact, be beaten in less than 10 minutes -- but the current Undertaker is damn near impossible. Oh, and both 'Takers can easily hit you with a finisher [[TheComputerIsACheatingBastard REGARDLESS OF WHETHER OR NOT YOU HIT R2 TO COUNTER]] a microsecond after picking you up off the mat. Oh, and he's also just a smidge faster than Modern 'Taker, so it's truly a case of Pick Your Poison---especially if you intend to unlock all the WrestleMania photos by beating him with Wrestling/TripleH, Edge, Wrestling/CMPunk, [[MightyGlacier Big Show or King Kong Bundy]].
** Oh, and for those of you thinking you can just beat Retro 'Taker instead of Modern 'Taker to earn [[AndYourRewardIsClothes the alternate attires]] you get for ending the streak? You HAVE to beat Modern 'Taker with either [[Wrestling/KevinNash Diesel]] or King Kong Bundy to unlock Retro 'Taker. Yeah...[[SarcasmMode have fun]] [[ThisIsGonnaSuck with that]].
* In ''[[{{VideoGame/Aquapazza}} Aquapazza]]'', the final boss is Ma-ryan and a main character of her choice depending on who your main character is. In addition to her normal partner attacks, she has [[SecretAIMoves Super Move variants of those attacks]] that she can unleash at any time. Her partner is an emotionless shadow clone of one of the main characters and doesn't experience any fluctuations in strength during the match like your character does. Finally, if she winds up on the losing end of a beatdown that would otherwise decide the match, she can ''rewind time'' to recharge her main fighter's health to 50% to delay/deny your victory.
** Then you face Chizuru in Another Story mode, who is by far the strongest LightningBruiser in the game. One of her special attacks even involves a textbook SpeedBlitz. If you're not careful, she can combo and fling you all around the screen to your death in a matter of seconds.
[[/folder]]
[[folder:Doujin Fighters/Fan-made Games]]
* ''EternalFighterZero'', an otherwise very balanced doujin game, has [[VisualNovel/{{AIR}} Kanna]] as the final boss. Her melee attacks have immense range and her projectiles are fast and cover a lot of area. Her AI is also incredibly skilled at blocking attacks, making it difficult to land any normal hit. Her character is available to the player as well, without any nerfing at all, which is why she's banned from tournament play.
** Kanna's only banned because players acually use the insane damage, comboability, and priority of her attacks, whereas the AI only defends well. Unknown[[spoiler:/Mirror Mizuka/Eien no Mizuka]], however, has been a source of frustration, as she (in her boss mode) takes full advantages of her moves' invincibility frames and spams high-priority projectiles that do almost as much damage blocked. (Thank god for the fact that you can't be chipped to submission in this game.)
* ''SuperCosplayWarUltra'''s Zenka, based on the (in)famously badass [[VideoGame/SuperRobotWars Sanger Zonvolt]], has full screen specials, supers and [[FinishingMove EX Super]] (some of them unblockable or do massive chip damage), high priority, is much faster than her range would imply and tends to exploit these advantages to the fullest.
** Next, comes Zmega, based on [[KingOfFighters Rugal Bernstein]], but in Story Mode, he's weaker than what you'd expect from a ShoutOut to one of the greatest {{SNK Boss}}es out there. Still, the game plays it cruelly in that there's only one round against him: should you lose, you automatically lose the game, but given the stand in Zmega's difficulty compared to Zenka, it's rather relative. However, this trope applies to his form taken at the end of Battle Royale Mode called Shin-Z, so much that even if you have an allied CPU still standing to fight with you, his sheer tendency to combo his specials directly to a super absurdly well, no thanks to crazy priority, turns frustration and keyboard breaking UpToEleven. Should you lose against him, you have to engage a survival battle against 5 enemies first before he pops out again.
** Finally, in comes Alpha, based on TheFourGods from VideoGame/SuperRobotWars. The TrueFinalBoss in Story Mode, Alpha carries the '''WORST''' use of super and EX Super spamming possible, moreso than Zenka. In fact, he will often combine them in a normal combo or interrupt them in the worst timing possible, but that's not to mention Alpha can interrupt during ''your'' combo into his supers. Said supers are like taking the full brunt of Zenka's supers (though Alpha's EX Super is far worse than Zenka's).
*** The newest edition of the game now gives Alpha [[StreetFighter Gill's]] Resurrection super (full hit point restoration, unless interrupted), provided Alpha's POW bar allows him to use it if KO'ed for the round.
*** It's worse than Gill's Resurrection. With Gill, you could just stand in front of his body and jab repeatedly to interrupt it and easily leave him at 25% health. But Team FK apparently took notes and made it so Alpha's Resurrection pushes the player away to keep that from happening, making it harder to hit him quickly.
* Nightmare Cat, from ''Azumanga Fighter'' (a doujin FightingGame based on ''Manga/AzumangaDaioh''), is a permanently Burst Moded version of Kamineko. Now bear in mind that Burst Mode normally has to be triggered manually by filling all 5 bars of the special gauge, AND being at low health, but that gains access to that specific character's ultimate move, and having infinite uses of the super moves. Kamineko is one of the more annoying (but balanced) characters due to its height (it's a cat, as opposed to the rest of high school aged cast), however Nightmare Cat fires off super moves rapid fire, and uses its short height to its advantage, ensuring you can barely land a hit. Fortunately, [[HopelessBossFight win or lose you progress to the next battle anyway]].
* The flash game ''South Park: Tokugawa'' has a final boss that is essentially, if not completely unbeatable, though this is in part due to poor game design in general, all of the unblockable moves and teleporting don't help.
* Shizuru in ''{{Mai-HiME}}: Fuuka Taisen'', when fought in Natsuki's Story mode. Shizuru loves to use her Super Special summon less than ten seconds into every battle, which fills the ground with slowly-advancing Kiyohime snake heads that are very hard to block, and will keep going indefinitely until they reach the edge of the screen. In addition, her "evil mode" lacks a block animation, which makes it complete guesswork to determine whether or not your hits connect, and has no problem spamming her whirling spear attack up close or whenever projectiles come her way. So, in essence, she's almost like her anime incarnation. [[spoiler:Good thing her "good side" is an unlockable character]].
** Natsuki may be better since she has ranged attacks. Consider Haruka the headbutt-main fighter...
* {{MUGEN}}, the fighting GameMaker, obviously has several hundred of these. It's a good place to find most of the other entries on this list. There's also an entire cottage industry devoted to producing overpowered, nigh-invulnerable characters, many seemingly written for the express purpose of beating someone else's overpowered, nigh-invulnerable character. This makes for an SNK Boss Arms Race of sorts. Some of the most noteworthy examples include:
** [[Manga/DragonBall Z Hyper Gogeta]] by Supermystery, with his screen-filling Kamehameha.
** The Legendary [=SSJ3=] Nightmare, probably one of the more infamous examples. Broly has a minute long intro of him powering up that knocks the opponent down and into a wall. If you've managed to survive that you have to deal with an annoyingly sturdy shield, shitloads of ki blasts and noisy shouting. And when he wants to, he can go straight to [=SSJ4=] where he becomes literally invincible and coats the screen with explosions.
** Master Geese by Cannon Musume, an MVC-styled version of Geese Howard that has been nicknamed "Master Cheese" for his unblockable and cheap super moves. Not to mention his Deadly Rave is a OneHitKill.
** [[SuperMarioBros Hyper Neo-Kamek]] by Kamek, who gives a new definition to the phrase BeamSpam.
** Light Yagami from ''Manga/DeathNote'' who, well, has [[OneHitKill a Death Note]]. (and [[MediumAwareness CAN READ HIS OPPONENT'S NAME FROM THE TOP OF THE SCREEN]])
*** Mitigated slightly by his [[GlassCannon low defense.]] Doesn't excuse him from this trope, though.
**** Also leads to a couple of moments of rage, where he shouldn't be able to tell the name. For example, VisualNovel/FateStayNight has a character in Mugen called Archer, only his real name is [[spoiler: Shirou Emiya]], only that isn't his birth name, and is actually the name he was given [[spoiler: after the grail fire of FateZero wiped out a large portion of the city he lived in, with him as the only survivor who can't remember anything before the fire.]] Meaning Light can kill characters using an alias of an alias of a completely unknown name.
** Dark Reiko Hikari by Kamek, a crazy, blisteringly fast teenage girl who also hits you with a bus, and has TWO OneHitKill moves. Voiced by [[VideoGame/DisgaeaHourOfDarkness Flonne]].
** The Rox Howard Clones, who turn a one on one into a one on seven.
** Just about any 'Evil Ken' type (a wide variety of Ryus, Kens, Akumas, and Dans which began, apparently, with a certain build of Ken), who all try and outdo each other with ridiculous priority moves, combo capacity, and overpowered super moves.
*** Combine this with a lot of [[ThisIsYourPremiseOnDrugs impressive chemicals]] and crank it UpToEleven, and you have Rare Akuma.
** Hyper Akuma also deserves a mention. To break it down completely, he has:
*** Ability to almost completely ignore attacks from other characters.
*** Ability to gain energy from being hit.
*** Insane attack speed. Racking up combos into the double digits is common when he is in play.
*** Very high strength. With the right moves he can wipe out an opponent within 10 seconds.
*** High movement speed. Capable of traversing the screen very quickly in a single leap.
*** A move which lets him cross the screen within 1 second and usually ends up behind the opponent. Also, he cannot be hit when using this move.
*** Another move which lets him cross the screen quickly. When he passes his opponent, it counts as a 7-hit combo. Spammable.
*** Projectile attacks which act as 8-hit combos. Also spammable, especially in air.
*** A healing factor that would put Wolverine and Deadpool to shame. Heals through super attacks.
*** Supers which often cover the screen, cannot be interrupted, have combo numbers ranging from 20-999, and eat up at least a third of the opponent's health bar. In addition, some of the Supers cost very little energy and some even recharge your energy bar.
*** Ability to SPAM super moves by mashing buttons at the right time while a super move is being performed.
*** And to top it all off, an aura which can reduce the opponent's health bar to nothing in seconds. Hyper Akuma has this on BY DEFAULT.
** Neo-Reaper Isabeau [=SSJ9=], for an unblockable near-insta-kill fire attack.
** [[VideoGame/FinalFantasyVII Sephiroth]], whose melee attacks cover half the screen, has 200% health as well as 220% defense, has three instant-kill moves (two of which are unblockable and unavoidable), can teleport with invulnerability, as well as charging his super energy invincibly, and is un-comboable.
** What about the [[{{Bionicle}} Toa Mata]]? Instead of being something like Pain from Naruto Ultimate Ninja Storm, each button is a different Toa attack. But Only Tahu is playable from the start, and pressing a button while the Bar is at halfway will summon a different one. This is not the end however:
*** You have to hit Tahu in order to damage them, and he is usually elbow deep in his spamming teammates.
*** So Many ultimate attacks, that you don't understand the meaning of cheap.
*** Each Toa has an ultimate, which is Telegraphed by a a white sheen, and usually takes chunks of health off of your bar.
*** Then using the TAUNT button, you cause them to do ALL their Supers, at once.The textbook defeinition of bad Sportsmanship.
*** Then there are fusion attacks, where two Toa do a new super attack, which again, takes chunks(Tahu and Lewa= Fire tornado, Hali and Pohatu, water stream= with a rock willing Onua and Kpaka= Ice shard blast, then a earthquake launching up MORE ice spheres.). And they [Take it up to Eleven] by going into a Kata form, where elemental fury is rife.
*** Though they need their supers to do most of the afromented, a palette allows they to have all six pre-summoned, and will a constantly full bar. You may soil your clothing now.
** And while we're at it, there's Gustav Munchausen from the K.O.F. Memorial game, who features insane chip damage, full-screen supers, and a brutal AI, and gains super energy ultra-fast. Most critically, unlike most SNK bosses which reverse your moves with one hard-hitting move, Gustav opts to execute a 15-hit melee combo that fills his super bar, then uses one of his energy pillar supers for half your health!
*** The midboss Psyqhical is widely considered to be even more broken than Gustav himself. He possesses all of Gustav's traits, but also has ''full-screen specials'', abuses counter moves that do ridiculous damage, can slow time down, and even trap you in a cube to take out 80% of your health. To top things off, the rest of his moveset is basically BeamSpam.
*** Someone thought it would be a brilliant idea to fuse the above two bosses, producing the edit known as Gustav M Type-F. He has a combination of both bosses' moves, and those belonging to Gustav have improved juggle qualities. But what makes him stand out is his infinitely chainable, lightning quick, invincible teleport which can be canceled from and into anything - a counter, a throw, even his highly damaging grab super! Worst of all, his AI really knows how to juggle and knows an infinite with his anti air strings move and his energy pillar supers, and it will happily abuse it!
** The second K.O.F Memorial game brings us Element. Element moves at absurd speed, possesses several annoying grabs and slashes that take off large sections of your healthbar, spams a variety of multi-hit infinite priority projectiles, can summon explosions UNDER YOUR FEET and best of all, has White's instant-kill desperation move, complete with fake KO message!
*** In addition, Element is less a unique character than a class of extremely broken Iori edits. Since he was introduced at the ending of the first K.O.F Memorial game, people started speculating about him and making their own versions. This class of bosses has very flashy super moves that tend to revolve around elemental attacks, and when they get a hit on you, they will empty their extended super bar on you for an instant kill.
** A Japanese imageboard took it upon themselves to make a Mugen game starring practically all their memes; as you may have guessed, [[HilarityEnsues insanity ensues]]. Still, ''nothing'' can prepare you for the final boss, Hato Sabure. To start, it's what appears to be a giant chocolate peep with GlowingEyesOfDoom. Who can fly via a jet engine and drop on you ForMassiveDamage, randomly counter physical blows by knocking you to the other side of the room, and is an absolute ''master'' of projectile spam-it has eye lasers, bombs, missiles, and fireballs, which all fire out of mechanical hatches that appear from its body. Fortunately, as with the rest of these bosses, the wide variety of characters allows a huge amount of ways of beating him to death.
** Gold [[EternalFighterZero Ayu]] [[{{Kanon}} Tsukimiya]]. She's a little angel girl. The first fight with her is like fighting a tough (but not horrible) AI opponent. Take her out once though... and she gains a massively fast regenerating super bar, regenerating health, and [[VideoGame/GuiltyGear I-no's]] infamous Megalomania attack.
** Cheap Boss Type, is a parody of these. You think fans would know better than to complain about it [[ExactlyWhatItSaysOnTheTin given the name]]. Also brings up the question of why M.U.G.E.N. players simply don't delete crap characters and move on to better ones.
** Zeeky H. Bomb, if only due to the fact that all his moves are strikers bar two. The saving grace of this fight is that Zeeky has no custom AI, and as such will constantly move randomly back and forth, leaving himself open.
** Don Drago has made Geese, Yashiro, Takuma and Goenitz, and has a habit of including all their movelists into seperate modes. Do the maths.
** [[MegaManZero Omega.]] He's a ''fair'' and very well-done example compared to the rest, sure, but the thing is, in the original games he appeared in, you can run away and take advantage of his AxCrazy fighting style. This time, you can't. He has MercyInvincibility which makes him almost immune to combos and can easily heal himself anytime he wants. On top of that, he has new supers. OhCrap. The only thing he ''can't'' do is rapid firing his Z-Buster. Because ''that'' would be cheap, [[WordOfGod says his manual.]]
** And then there was "[[ScaryScorpions Mecha Scorpio]]". Even the author is now ''[[OldShame ashamed]]'' of it! Here's all the things wrong with it-
*** Short, making it hard to hit with high attacks.
*** Huge damage with its infinite priority claws, tail, fire and earth based attacks, as well as fast power gain from just using them.
*** It could poison the opponent for the round every time it hit with its [[BewareMyStingerTail stinger tail]], causing them to flinch and take damage every few seconds (the poison effect was stackable too!). Worst of all, the poison never went away!
*** Countered all grabs with a powerful move, not only did it take off a quarter of the opponent's health, it also gave them the poison status too.
*** A OneHitKill that it WILL use if it got up to max power, and it could only be avoided by crouching and blocking. If the opponent didn't do so, they would be sucked up by a sandstorm, dropped into the middle of a desert, crushed with four rock pillars, then blown up.
*** Finally, if most of the above-mentioned {{Game Breaker}}s were used against it, it would turn invincible and all its attacks would become {{One Hit Kill}}s!
** ChuckNorris. If anything, the internet rumours understated his power.
*** He's ''[[GameBreaker way beyond]]'' SNK Boss. At least the player has a small ''chance'' to defeat an SNK Boss... as for fighting against Chuck Norris, no such luck - The Heart Attack Button doesn't even work on him! If you didn't think to place Norris outside the normal fighting order, [[UnwinnableByDesign the jig is up when you run into him]].
** Most ''VideoGame/{{Touhou}}'' characters can become this if their movesets are ported directly. The original fighting games are built around ''BulletHell'' as opposed to melee and movesets are balanced accordingly, giving each character massive barrages and means to counter the same. Contrast this with the average fighting game character who is almost melee exclusive.
** Finally, speaking of edit characters, many of the above mentioned SNK bosses have been ported into MUGEN. Some authors will port them exactly as they were in the original game. However, many authors will edit them to tack on new supers and special moves, making them an even worse pain in the rear to fight. Using the King of Fighters Memorial edits as examples:
*** Goenitz gets a couple of screen filler supers where he fills the screen with tornados and a version of Yonokaze that travels towards his opponent and combos them for 8 hits.
*** Orochi receives several Marukare variants, solely for the purpose of being cancelled into each other to obliterate his opponent's lifebar. It is also almost impossible to see when he uses his counter moves!
*** Krizalid gets a MegatonPunch super that does serious damage, souped-up versions of Desperate Overdrive, a super grab and a MAX move where he fills the screen with explosions.
*** Original Zero and Clone Zero have their movesets combined, allowing the former to use both his strikers and Clone Zero's Shadow Arts. As with Orochi, he receives a couple of variants to his Black Hole.
*** Igniz gets a full screen version of Chaos Tide (the quad-energy blast), a screen filler, Krizalid's End of Heaven super, the Zeroes' Black Hole and a super where he charges up a large energy ball that is an instant kill if not blocked.
*** Sinobu returns, but several times as cheap; he uses lightning and wind element attacks simultaneously, has TWO 4-hit one frame projectiles and is very fast on foot. Most critically, remember those orbs that surrounded him in his official appearance? They're now a super that forces you to block, allowing Sinobu to back you into the corner and chip you to death!
*** Not even the relatively balanced midboss Kusanagi is immune. He's mostly the same... except that he now runs at 50 miles an hour for continuous mixup pressure. Have fun escaping the corner!
* In the first renditions of ''MeltyBlood'', we had Aoko Aozaki. She was pretty much a FightingGame version of a VideoGame/{{Touhou}} character, BeamSpam included. She was later balanced as a normal character and given a new moveset. There was also the secret boss Giant Akiha, who was a parody of [[VideoGame/{{X-Men vs Street Fighter}} Apoca]][[VideoGame/MarvelSuperHeroesVsStreetFighter lypse]], who did an insane amount of damage. A later revision replaced G-Akiha with Neko-Arc, a small, deformed cat version of Arcueid which had attacks with absolute priority. Also, she was small and very hard to hit.
** Act Cadenza introduced White Len, an alternate version of Len that easily takes Aoko's former place as the SNK Boss. She had a drastically different moveset than in the Ver. B update, and most of her attacks had absolute priority and did a lot of damage. Neko-Arc also got an alternate version called Neko-Arc Chaos, who parodied Nrvqnsr Chaos' moveset but with the same attributes as the original Neko-Arc.
** Ver. B of Act Cadenza introduced a new hidden boss: Neko-Chaos Black G[[NumberOfTheBeast 666]]. Created by Kohaku in an alternate story mode for Neko-Arc, this is a true successor to G-Akiha who loves to abuse BeamSpam, but also has other attacks like a drill and a missile arm. It's extremely hard to beat due to the large amount of damage it does. At first it can only be fought in Neko-Arc Chaos' secret story, but if you beat it you unlock Giant Attack Mode, which lets you beat it with any character. The catch with Neko? He's pretty susceptible to multiple-hit attacks after he attacks, so you can pretty much punish his moves with a combo or two.
** Actress Again gives us Dust of Osiris, only available to certain characters. It's an alternate-reality version of Sion, and it's pretty cheap in its own right. Look it up on Website/YouTube and see for yourself.
*** And then Current Code made her even '''worse''': She now has an Arc Drive, which makes her invincible for a few seconds, after which, she ''nukes the entire screen with an unblockable attack''. It is possible to dodge/shield it, but you need a good timing.
** Also in Actress Again, if you beat Boss Rush mode without losing a round, well... you get to fight Archetype Arcueid, who can ''kill you instantly.'' And is then unlocked as a playable character... ''with all her moves and damage intact.''
* ''VideoGame/{{Touhou}}'' (fortunately the Touhou fighting games avert this trope in multiplayer by keeping story mode spellcards separate from multiplayer):
** ''Immaterial and Missing Power'' has preliminary boss Yukari Yakumo and her ''Infinite Speed Flying Object''[[note]]unblockable and ungrazeable beams that give you about half a second to read and dodge[[/note]], and FinalBoss Suika Ibuki's ''Pandemonium''[[note]]DeathInAllDirections at its finest[[/note]].
*** Everybody is a more dangerous opponent in Story Mode (where these two are bosses); the gameplay consists of bouts of normal combat with your adversary interspersed between trying to dodge one of her souped-up, perpetual-use spell cards while getting enough attacks through to knock her out of the casting trance. They also get more life and some armoring. Yukari and Suika simply take this well beyond any of the regular Story Mode characters.
** Tenshi Hinanawi of ''Scarlet Weather Rhapsody'' eventually fits this trope. While at first she's only a little stronger than most of the enemies you've fought so far, her final attack is absolutely brutal. If you don't knock her out before she starts doing it, she starts spamming almost impossible to dodge lasers. Oh, and if you get hit by one, she starts another one before the first one finishes, so if you ever get hit by one of these lasers, there's a very good chance that you'll just die.
*** In [[HarderThanHard Lunatic mode]], she fires 3 at once which actually is quite unfair. However due to the limit system it will only do about 3k damage, which is still a lot but not enough to kill you. The gimmick to this spell is to bait her lasers on 1 side then graze though them. Also, this attack will guard break near instantly; if you accidentally started blocking, border escape immediately.
*** Yukari Yakumo is also a brutal example (again). Her very first spellcard may not look like much but the projectiles move in a specific pattern that makes it impossible to counterattack. If you're hit once, the next projectile will get you the precise moment you recover, leaving no time to block. If you attack after a successful dodge, you will have no time to block, and once you're hit before your attack connects, it's negated.
* Act Cadenza Strife, a fanmade TalesSeries fighting game, has several boss characters such as [[VideoGame/TalesOfPhantasia Dhaos]], [[VideoGame/TalesOfTheAbyss Synch and Nebilim]], [[VideoGame/TalesOfDestiny Hugo and Barbatos]], and [[VideoGame/TalesOfEternia Shizel]]. All of them have at least one ridiculous gimmick that makes beating them a pain (for example, at low HP Barbatos will use a completely unstoppable move that instantly kills you no matter what), but in general it's not too hard unless you're doing a boss rush. However, that's because those guys are all playable (though the CPU versions have benefits the playable versions do not, such as the aforementioned instant kill move). However, the game also has several unplayable completely ridiculous secret bosses that fulfill this trope.
** First off is [[VideoGame/TalesOfSymphonia Yggdrassil]]. His main attack, Yggdrassil Laser, hits everything in front of him for a ridiculous amount of damage, makes him invincible during the entire animation (including when he starts it), and is often spammed. He also has two uninterruptable and unblockable moves that he can bust out if you get too close. His other attacks are almost all spells, which normally require a casting time of some sort. Yggdrassil instant casts them. Did I mention that his version of Photon counts as a grab, so it can't be blocked? And that it can hit you no matter where you are on the field? Even worse, his LimitBreak can be used for a piddling amount of TP, does ''massive'' damage (about a third of the average lifebar), and the only way to avoid it depends entirely on your luck? And as a final Screw You, at low HP Yggdrassil uses a completely unstoppable attack that hits the entire screen for a decent amount of damage, which will probably kill you.
** Next is [[VideoGame/TalesOfEternia Nereid]]. She(?) has a ''ridiculous'' amount of immunity frames, namely every time she casts a spell. Oh, and almost her entire movelist is spells. Spells that she will spam like crazy, usually causing the player to literally have to wait until her AI makes her use a spell that doesn't leave you completely helpless for ten seconds. Aside from that, she is fond of casting a spell that causes rocks to shoot out of the ground in front of and behind her. These rocks can not be blocked, and during the entire animation Nereid is completely invincible. And that's not even counting her LimitBreak, which does a large chunk of damage and has a tendency to break your guard with the initial (weak) hits, allowing the final (strong) hit to rip into your HP. Finally, she also has a low HP desperation attack that hits the entire screen. Unlike Yggdrassil, though, Reid Hershel, the main character of Tales of Eternia, can counter her desperation move with an attack that instantly kills her as a reference to VideoGame/TalesOfEternia.
** And last, but not least, is the living incarnation of bullshit: [[VideoGame/TalesOfVesperia Alexei]]. This asshole spams spells that hit the entire field, such as the infamous Tidal Wave. But unlike Yggdrassil and Nereid, he's actually open for attack while casting. Or he would be, but because he's an asshole his spell guard (basically, whenever you cast a spell in {{ACS}}, your character will not flinch for a certain number of hits. This allows a caster to actually cast a spell, but also means that melee attackers can interrupt the spell if they reach the caster fast enough) is miles above other characters, with the end result being that even if you attack him for the entire period of his spell casting you can't stop the spell. But when he's not casting, Alexei is usually doing one of three things. Either he's attacking you with his ridiculously long range melee moves, using his LimitBreak, which is just as absurd as it was in VideoGame/TalesOfVesperia, or going into Overlimit 2 so he can kill you faster.
* ''[[VisualNovel/UminekoNoNakuKoroNi Ougon Musoukyoku]]'' CROSS has one of these after beating Arcade on Hard difficulty without losing a single round. In it, you get a [[BonusBoss Final Battle]] "to end the game", where you have to fight against two Black Battlers on the same team.\\
\\
As if the difficulty level isn't enough, he also gains life from damage dealt (which is usually a 100% heal), recovers life over time, takes little damage, does [[SuperStrength gigantic damage]], crushes defense within a few hits, has infinite Special Meter and auto guard (can block while attacking or even while taking damage).\\
\\
And while you need to change your character using a usually risky and highly-punishable move to activate one of your two special abilities for a short period of time, Black Battler has eight of those special abilities ALWAYS active.
* In the KatawaShoujo fan game, ''Katawavania'', after defeating Lillycula, you go up against her [[StrongerSibling older sister]] Akira. Akira can frequently FlashStep around the arena, often behind you, with little to no warning, has several attacks that are difficult to avoid (such as homing missiles and a beam rifle that can only be dodged by sliding at the precise moment it fires), and has virtually no telegraphing or pattern. The second ending indicates that the creator was not expecting many people to defeat this "unfair" boss.
[[/folder]]
* ''Mighty Morphin' Power Rangers: The Fighting Edition'' has [[Film/MightyMorphinPowerRangers Ivan Ooze]]: he's unaffected by gravity, can't be thrown, has a normal attack which knocks the opponent clear across the screen if not blocked, his other moves (3 normals and 2 specials) are all projectiles, with the specials being multiple homing projectiles (with priority over ALL OTHER FIREBALLS), and one of his specials makes him invincible for about 2 seconds. So what's supposed to offset these advantages? He can't block, and he has no super. Too bad his invincibility special more than makes up for not being able to block, and his specials do so much damage that he doesn't need a super.
** To wit: Ivan Ooze can do his invincible DP out of hitstun. You HIT him -- and he hits you right back.
** Lord Zedd, who you fight before Ooze, could simply teleport whenever he wanted, even when he's blocking or being hit, meaning combos and hypers were useless against him.
* Alpha-152 in ''DeadOrAlive 4'', a superpowered Kasumi clone made of... [[WhatMeasureIsANonHuman something]] (Jello? Cool Mint Listerine? Just [[EnergyBeings plain energy?]]). She's unplayable and has a unique move set including combos (both combo melee attacks and combo grabs/throws) that can take down 2/3 of your health in one shot; even on "[[NintendoHard Easy]]" difficulty she takes serious players multiple attempts. She also has the annoying tendency to teleport out of your combos and launch into one of her own.
** Certain characters have an easier time fighting her than others. Quicker characters and characters that are difficult to read (Helena, Brad) can adjust to her teleport attacks quicker, not to mention the ability to just rush at her and get a few moves off before she teleported again.
** The worst part about her, not yet mentioned, is her abuse of attack range and PerfectPlayAI. She stays just out of range of your (standard) attacks. When you try to hit her and your attack falls short, she'll nail you for the aforementioned 2/3 of your health while you're in cooldown. If you (try to) run in and attack, she'll either nail you before you get to the "attack" part, or teleport away. If you sit in defense, she'll move forward in a split second and hit you with a similarly overpowered grab combo before you have a chance to hit her.
*** This makes the best way to beat her a (partial; she's still not stupid) AIBreaker - attacks she doesn't think can hit her at the current range, but actually can. Typically, attacks involving some form of lunge. Strafing sideways before running in can also trip up her ranging avoidance.
** Before Alpha, there was Tengu in ''DeadOrAlive 2''. He returned in ''4'' as a balanced secret character, but in his original debut game he was a bastard. His AI was almost completely omniscient and would counter '''everything'''. His moves did tremendous damage, yes, but he had one move that skyrocketed him to boss territory: he charges up and creates a giant gust of wind around himself, knocking the opponent away. He would do this move ''all the time'', and it was also unblockable.
*** Tengu was actually really easy to beat if you learned his weakness: while the wind-gust maneuver cannot be blocked, it ''can'' be countered via the middle-punch counter, so long as you are somewhat close to him. The gust has a long wind-up time, giving you plenty of time to close the gap. What's more, Tengu loves spamming the gust when you're at range. So just counter the gust, back up so that you provoke another gust, run up during the wind-up and counter again, back up some more, etc. With this technique, you can easily beat Tengu with any character. Yes, exploiting the AI is cheap, but then so is Tengu.
*** In the UpdatedRerelease, ''DeadOrAlive 2 Ultimate'', he gains a new CPU-exclusive move for his exclusive stage which cannot be accessed: he can change the weather. It's ''really'' distracting and it can hurt your eyes if you're not prepared for it. And while he's doing this he can charge at you freely.
** After Tengu, Ayane's foster father Genra/Omega made his debut in ''DeadOrAlive 3''. First, you fight him in [[InterfaceScrew a really weird camera angle]]. Secondly, the fire around his stage makes everything super-blurry so you can't see his attacks. Finally, one of his attacks has to be jumped over, which is easier said than done.
*** Not to mention - trying to use a throw on him lowers YOUR health. Also, if he gets hit and falls, he unleashes a short flame wave, which takes some of your health, if not blocked.
** This all falters in the face of Dead or Alive: Dimension's brand new "Tag Challenge" mode. It starts off innocuous enough, but the final five fights have you play against a beefed-up Kasumi clone named Kasumi Alpha, all of the bosses in Dead or Alive history, AND a brand new boss in the form of [[spoiler: supreme Mugen Tenshin clan badass and father of basically every ninja in the game, Shiden, who pulls so many moves out of his ass it's sheer baffling.]] Add to everything that they take majorly reduced damage and can take away up to 75% of your health from an accidental tag, and the fact that you have two characters to even the odds barely matters.
* ''BushidoBlade 2'' has, if the player plays the story mode as a Shainto clan character, a penultimate boss that instantly teleports away, without a scratch, if 'hit'. The only way to kill him is to keep making him teleport, as each time he does, he reappears closer and closer to the player, and you have about a second-long window to gut him before he stands up and readies himself. Of course, if you die (which is easy, since your character is a potential OneHitPointWonder) the process starts over. Almost as if to make up for this pain-in-the-ass opponent, the Shainto's final enemy is [[AntiClimaxBoss an unarmed girl who doesn't even fight back]].
** All characters, Shainto or not, eventually have to go up against someone armed with a gun, while the player has only a melee weapon. The guy with a gun was in the original ''Bushido Blade'' as well, and had this irritating tendency to backflip away if the player got close. The trick was simply to run around until he'd fired six times. Guns need reloading, swords don't, and his defense is pathetic. But be warned. The first time you fight him, he ''will'' [[WhyDontYaJustShootHim Just Shoot You]].
* ''Matrimelee'', the revival installment of the ''VideoGame/PowerInstinct'' series, replaces Angela with a [[BewareTheNiceOnes not even less 'cutie']] [[RichBitch Princess Sissy]]. A seemingly harmless young girl, she can conjure many different things from her magical box. One of her most annoying tactics is constantly bringing out [[LiteralGenie Abubo]] from ''Rage of the Dragons'' that swings his fists around, so they would get you in '''both''' air and ground. She regularly does this when the opponent is anywhere nearby her. This guarantees that you will be unable to get close to her unless you keep trying incessantly, are a pro and/or exploit her rather simple AI. But it doesn't end on Abubo. She also has [[strike:drill]] [[ChainsawGood chainsaw boots]], a purple bomb, an uncancellable frog projectile and even a [[strike:booby trap spike]] sword. And, to finish your attempts to marry her '''off''' once and for all, Sissy's arsenal includes a '''FUCKING''' annoying and unblockable [[spoiler:(Although, you know... it's [[DoubleJump overjumpable]], thankfully)]] super where she shoots a raygun at you and turns you into a '''FROG'''. ...oh, and she's [[strike:almost]] [[HitboxDissonance unhittable when she attacks]].
** On a side note, she's still damn hard to beat even if you're playing at the easiest difficulty. Yeah, even '''as''' Sissy. And even in Bloodlust Fight mode.
* Groove On Fight has Bristol, the final boss. His first form is fairly harmless - does high damage with leg-based attacks, but nothing too terribly nasty. Then he turns into a demon after being [=KOed=]. And things get worse, as he gains a slew of attacks that have incredible priority, come out monstrously fast and do entirely too much damage. His Super does a ton of damage and can chip you away if you block it. And he buttonreads. Welcome to hell.
* ''VideoGame/SuperSmashBros. Melee'' has '''Giga Bowser''', a character who not only exceeds all playable characters in size, weight and reach, but also ''cannot be grabbed'' like regular characters.
* ''VideoGame/SuperSmashBros. Brawl'''s Adventure mode did an acceptable job with bosses, right up until the last one, [[spoiler: Tabuu.]] He has moves that do an insane amount of damage, can teleport, usually right before you get to him after recovering from said attack, has an insane amount of health, and has a move that some StreetFighter players might recognize from Gill. It looks exactly like his Seraphic Wing attack, and it does the same thing - instantly kills you (though you can avoid it if you dodge ''three times in a row'', expertly timed and all). (This attack is officially called "Off Waves".) It's interesting to note, though, that all of his attacks bar the latter come from the Kirby character, Marx. At least you get SIX lives/characters in Subspace Emissary to tackle him. However, Sakurai had to be a bastard. In BossRush mode, you only get one life. Good luck beating it on Intense, as per one of the [[HundredPercentCompletion challenges]] that can't be bypassed with a Golden Hammer (except in the PAL versions). The only saving grace is that, in Boss Rush mode, the bosses are toned down from the same difficulty equivalents of Subspace Emissary mode. That is, fighting Tabuu in Intense in SSE is even harder than doing it in Intense in the Boss Rush mode. This is ''because'' of the aforementioned extra 'lives' thing you get in SSE. This manifests in the form of increased health and speed for the bosses in SSE.
* The eponymous Eternal Champion from the [[SegaGenesis Genesis]] fighter game ''EternalChampions''. Not only is he as strong as him being on this list would imply, you have to beat him five times in one round, and each time he uses a different (but equally painful) move set.
** And if you were lucky enough to get ahold of ''Eternal Champions CD'', the Sega CD version, you had to do it not once, but ''twice''. ''Then'' you also went up against the Dark Champion, who had the same annoying multiple-self-resurrection abilities, complete with moves relating to natural disasters with which he just wouldn't let up at all. Oh, and that's without mentioning the fact that the computer in the last game [[TheComputerIsACheatingBastard can ignore the game's rules]] by spamming their special attacks, despite having an apparently functional "Inner Spirit" gauge, which was thankfully taken out in the second game. The Champions in particular like to repeatedly Insult you, destroying your ability to use special attacks while using their own invincible-ground-sweeping abilities... over and over and over.
** Getting to the final set of fights on Champion mode leads to the Dark Champion [[BadassInDistress kidnapping the Eternal Champion]]. You get to fight the Dark one as the Eternal one in what can be an absolutely epic fight, were it not for the Dark Champion being damn hard. The worst part is you only get one chance to win the last battle, or you have to start the whole game again.
* From the ''VideoGame/ArcanaHeart'' series:
** Mildred. In her first form (from story mode), you have one round to beat her or lose. She doesn't actually '''move''', but she effortlessly attacks you from across the screen with massive knockback attacks that are undodgeable (but, fortunately, not unblockable) and has an insanely high defense -- if you can actually manage to get close enough to damage her beyond projectile chipping. If you lose against this form -- which is essentially inevitable if you have a character/arcana combo that has useless projectiles or none at all -- you get a second form where she has access to all the best moves in the game, (including giving her regular special moves that are supers for anyone else that uses them) she has a dangerous new super that does nearly half a health bar in damage if not blocked and hits the entire screen, she has mid-air and ground recovery that instantly leaves her standing up on ground level, she starts with a full super meter and she has a defense nearly as good as the first form. Oh, and you can't win via time-out. Otherwise, she [[spoiler:merges the two worlds, resulting in the implied deaths of millions.]] Of course, you can avoid this just by setting the game timer to infinite. A catch, though: if you ''do'' beat the first form, you instead get... the exact same battle, but the boss starts out with an empty super meter instead. Long story short: if the MarySue trope could be applied to an SNK Boss, Mildred would be A-number-one on the list.
** ''VideoGame/ArcanaHeart 2'' gives us the somewhat less frustrating Angelia. In arcade mode, she simply plays like a smart computer opponent (including her annoyingly effective but technically sound "Halo Dash->Halo Super" tactic) and doesn't seem to use her arcana ''at all''... but she still [[TheComputerIsACheatingBastard doesn't seem to have charge her halo dash attack]], since she can and does use it ''constantly'' (especially during attack clashes). In ''Story mode'', on the other hand, she uses the same tactics, but her arcana (Mildred, incidentally) is always active, meaning Mildred launches attacks on her own pretty much independently. In addition Angelia also has a certain unavailable-to-players super where she... drops a building on you. Seriously. Needless to say, it's unblockable and does over half a health bar of damage, though she thankfully only uses it infrequently.
** In Sugoi! Arcana Heart 2, players can use Angelia's building drop super. Also, in Story Mode, there is a new hidden boss named Parace L'Sia, who makes Mildred from the original look like a gigantic joke. She fires projectiles with reckless abandon, has absolute priority on all of her moves, regenerates damage, and most of her supers are a ''OneHitKill''! One of her supers is a projectile that goes off five seconds after it hits you, suddenly dealing insane damage and putiting you into hit-stun - even when you're in the middle of a combo or blocking a multi-hit attack. Just to make things worse, she continuously regenerates her super meter, and has another move where she goes into a cocoon to accelerate its regeneration. The cocoon move only ends when her super meter is completely filled (at nine stocks) or if you attack the cocoon enough times to break her out of it - and none of your attacks will do any damage during this time. And she's still regenerating her health. She goes well beyond a typical SNK boss and acts more like a overpowered horrible MUGEN character.
** Arcana Heart 3 tops it off with first having you fight mid-boss Scharlachrot, who plays like Hazama with robot tigers that fire beam spam cannons. To wit, she attacks really aggressively, her Arcana (said robot tiger) can interrupt your combo by shooting you in the middle of it and set her up to combo you (and it will happen often). One of the Arcana supers are to fire a super powerful bullet capable of wiping out nearly 50% of your health, and her Arcana Blaze is to fire a frigging huge beam that goes upwards and will take out 50% even in chip damage. Oh, and beat her on the first round and she goes to activate PERMANENT Super Mode with boosted attack and defense. And did we mention that her Arcana bar usually regenerates in an unusually fast rate so you'll find yourself often facing that near-50% health powerful bullet? Win against her? Then prepare to fight Ragnarok, a HumongousMecha bent on destroying Japan and plays differently from the rest of the game on a 3-tiered battlefield - if you do not understand how to fight bosses like Onslaught, you're pretty much done for, and his main offense are two annoying flying funnels that constantly fly around you and interrupt your acts, not to mention BulletHell gallore or a beam rain unblockable. Much like Mildred, this is Do Or Die - run out of time and Japan gets blown sky-high. In short, the final boss is essentially made (overly) difficult not by its moves or its strategy, but by the fact that it basically converts the game into a side-scrolling platformer, while you're still saddled with the control scheme of a fighting game. If the spam attacks don't get you, the clock will simply run out while you're trying to jump up and hit that last weak point.
*** And if that wasn't enough, Parace comes back in the Score Attack mode of the Arcana Heart 3 console port. The good news is, she doesn't do nearly as much damage this time around (no more one-hit kills, at least). The bad news is, she doesn't ''need'' to because now she teleports around the arena like she's on crack, and can (and will) do long combos that will take out a huge chunk of your life! Worse, her AI is even more aggressive than before and she seems to button-read as well, since nearly any attack you do will be met with a better one that will set you up for a long combo. Fighting Parace in this game is like fighting [[{{MUGEN}} Rare Akuma]]. The only good thing about this fight is that if you actually manage to somehow ''hit'' Parace, you'll find she takes more damage than usual, but she still has auto-regen for her health. Its safe to say that Parace manages to take this trope to SerialEscalation levels, and considering most of what {{SNK}} themselves does with their bosses, that really says something.
*** One other thing. Unlike in Other Score attacks by arc System works, you have unlimited continues and with each try, Parace's health goes down with each one little by little. However, considering the above, '''You. Will. Need. Them!''' And the lower her health is, the more agressive she gets. Basically it's as if the development team ''knew'' how hard she would be and did that to try and compensate. If the score attack acted like other games, Parace would more then likely be downright unbeatable!
* ''Battle K-Road'' claims "Super Real Fighting". And who do you fight at the end of this game which features takedowns and such? A bear. Yes, a {{bear|sAreBadNews}}. Named Mr. Bear. Who has a Dragon Punch. And can knock most of your life off in one hit. Where's ''Tekken's'' Paul Phoenix when you need him...?
** Similar is ''Fighter's History Dynamite's'' hidden boss: you fight...an ox. And like Mr. Bear he'll likely stomp your rear end.
* Greed from ''VideoGame/TheRumbleFish''. The game and the character have to be described before going further. In ''The Rumble Fish'' there are two main gauges, Offense and Defense. The Offense gauge fills up as you attack, once it's maxed out you can initiate an Offensive art. You can also do Advanced Attacks, which takes half of the gauge and allows you to extend a combo. The Defense gauge fills up passively or by blocking attacks and Defensive arts are initiated from said gauge. It also allows for Impact Breaks, which is basically a counter, for half the gauge. Once both gauges are maxed out, they merge and become the Critical gauge. That allows for Critical arts, which are really strong super moves. Greed's Offense art allows him to combo his special moves into another one for a short period of time. Once you encounter him in Story Mode, he's just like his playable version. Until he literally ''TurnsRed''. From that point on, his gauge turns into the Critical gauge and is in a permanent state of his Offense art. Cue the SNK Boss: He can counter any of your attacks if he feels like it, combo from said counter with an Advance Attack and shell out a lot of damage by chaining his special attacks. Oh yeah, and he can also chain his Critical art from his specials. And if you corner him, he can just ''WallJump'' his way out to safety.
* Dural, in any given ''VirtuaFighter''. On one hand, it still counts if you beat the game without defeating her, but if you want to see the ''good'' ending, you have to win, and in ''4'' you only get one shot.
* The Jester from ''VideoGame/{{Ballz}} 3D'': teleporting, attacks from a long range, various tripping moves, and he resurrects himself when you knock him out once.
* The ''DynastyWarriors'' series' Lu Bu averts this trope in the same way that modern Akuma does -- he's an example of ThatOneBoss, but the only gameplay aspect unavailable to players is "hyper mode," which is not exclusive to him.
** His AI in ''[=DW3=]'' is actually worse than average: while he knows to use his first charge attack to make you stumble, almost every time he waits so long to attack you again that you can recover first. (Then you need only have low health for free Musou and the victory.)
** In Dynasty Warriors 4 they also start his incredible weakness to arrows (they murder him). This actually extends to the AI where in one situation he actually turned away from the player controlled max level Zhao Yun to brutally murder a random body-guard that shot him in the back of the head with an arrow.
** ''WarriorsOrochi'' series seems to make Lu Bu's AI even stupider. In the first game, he can easily be tricked into giving up Red Hare, and any decent player should have the cavalier up high, making your basic attacks against him pretty good. In the second he's worse as he will start laying into the Redshirts following once you've dismounted him, stolen Red Hare and given him distance. He'll use up Musou on these guys before coming at you.
** in DynastyWarriorsOnline every musou general, the playable character from the dynasty warriors games rather than a custom character, are SNK bosses for their unique bonuses, that are all achievable by players but not all at once. They are horribly dumb, and don't really pose a threat by simply being on the map, making it much calmer when they are around, but when you face one it's hell. Every single general has at least 3 advantages. 1. They all have at minimum hyper armor, meaning they only flinch at LimitBreak, and some have stronger, like Lu Bu, that means they don't flinch at even that. 2. Their stats are through the roof, they cause massive damage and can take attacks great, making them really lethal to be around, as they don't flinch easily it's hard to keep them from attacking and they are damage sponges. 3. They have flunkies that are not as powerful as them but still have the same resistance and rather upgraded stats for a mook. After all of that, they are hard to defeat, but they do have weaknesses, such as not having any special resistance to elements allowing them to be forcibly stunned or pushed. They can also be distracted easily, and you can get them off you by running into a crowd of either your own or bandit (hostile to both sides) mooks.
* The prototype of all 2-D {{Fighting Game}}s, ''KarateChamp''. Once a player reaches 8th Degree Belt level, the computer-controlled opponent becomes practically unbeatable, anticipating and countering a player's every move with frequency only a literal god of fighting could be expected to pull off.
* ''[[PunchOut Mike Tyson's Punch-Out!!]]'' ups the difficulty to ludicrous levels for the fight against the eponymous boxer--for the first two minutes of the fight, a single punch from the guy KO's you, and his weak spot is only exposed very rarely. Not to mention he acts lightning fast, giving you very little time to dodge and fight back. And there are no saves.
** When ''Punch-Out'' was re-released in the 90s, it replaced Tyson with a sprite-swap named Mr. Dream because Nintendo's contract with Tyson expired. His [=AI=] was replaced, too, but not in the good way. This was the version released on the Wii's Arcade.
** The {{Retraux}} remake of ''Punch-Out'' for the Wii does not have Mike Tyson (obviously, considering several controversies), but it has something even better. [[spoiler:VideoGame/DonkeyKong.]] Mr Sandman also seems to have carried over Tyson's mannerisms for the fight against him.
* The final incarnation of Rahu in the Gamecube ''VideoGame/CustomRobo''. Takes single-digit damage from nearly all weapons, moves fast enough that it can't be hit unless standing still, does ludicrous damage with his main gun that can't realistically be avoided unless you use one of the four pieces of cover in the holosseum, AND recovers ''instantly'' from all knockdown effects. That last one is the worst, because in this game, recovering from knockdown grants a few seconds of MercyInvincibility. Rahu gets all the benefits and is immune to the stun time normally associated with knockdown. Even outnumbering it three-to-one your chances of victory are slim. God help you if it decides to focus its attacks on you.
** "God help you"? No. You WANT Rahu to come after you. If he doesn't, he'll stomp your allies, and when he does finally come for you, you'll be powerless to stop him one-on-one. At least his attacks CAN be dodged (as difficult as it is).
** Any enemy with illegal parts can count as this to varying degrees. In-universe, illegal parts are illegal because they apparently put too much of a strain on the user's mind. Gameplay-wise, though, they're illegal because they're purposefully broken and unbalanced (naturally, every part used by Rahu's different stages are all illegal parts.)
* Chaos from ''DissidiaFinalFantasy'' is a great example of this trope. He attacks faster than any other character in the game by a wide margin, his attacks massively lower your Brave and increase his own, he chains his Brave attacks into his HP attacks, and while most of his Brave attacks are "melee", they send out shockwaves that exceed the size of the area where you fight him. When he uses Divine Punishment and Scarlet Rain, once he starts the attack, he becomes invincible. His Demonsdance attack chains together a massive string of bonecrushing hits, with several HP attacks ''in the combo!'' He also gets the Shinryu summon, which, unlike the player's summons, can be called as often as Chaos wants and his effect varies, because Shinryu mimics the other summons in the game! And he also has three forms, fully recovering HP each time while you're left at the amount you had. There's a catch, though: there's a flaw with his AI that makes him unable to avoid the final hit of [[VideoGame/FinalFantasyVII Sephiroth's]] octoslash HP attack, he'll dodge every slash except the one that actually does the HP damage, so if you feel like going slow and steady against him, you can turn even his [[HarderThanHard Inward Chaos form]] into a joke.
** Another way to make his Inward Chaos form disappointingly easy is to use Exdeath. Chaos's AI is so aggressive, that if you pull off an attack right at the start of the match, he'll counter with his own longer-ranged attack that probably overrides yours. Usually this is bad. However, it's funny to see him try this with Exdeath's Delta Attack, which forms a large barrier in front of Exdeath that blocks incoming attacks and staggers the enemy before striking them with a short beam for damage. This attack's beam is usually slow, unless it blocks and staggers with the barrier, in which case it'll fire off the beam a second later for a guaranteed hit. Equip Exdeath with every item you can that will get his starting Bravery to 9999, and just use Delta attack for each of the three rounds. Is Chaos really stupid enough to always instantly swipe into your staggering defensive barrier and get ravaged by a max-power Delta Attack, meaning you can beat him simply by pressing one button each round for three one-hit-K.O. victories? Spoiler: [[spoiler:Yes. A thousand times, yes.]] You will spend more time in the loading and victory screens than you will actually fighting Chaos.
** The second game features [[spoiler: Feral Chaos]] as the penultimate boss of the story mode's extra scenario, he defines unbelievable, most of his attacks have huge hitboxes, making them difficult to avoid, only one or two don't crush your guard. As if that's not enough, in a game where 9999 damage is the most you'll ever be able to do, he has '''60 THOUSAND HP''', and naturally, you can't use any of your items in the gateway you encounter him in, so cheaping out is impossible. His HP attacks drain your EX-gauge to emptiness, so using it is diffuclt. The real kicker comes after you finally manage to beat him, [[spoiler: the first fight was just a manikin]] you have to fight him again, this time he has more moves, an assist, and ''125 thousand health!'' (ironically, this form is actually weaker because he doesn't have as much defense). To top it all off, ''He's unlockable''. And in a frustrating case of TheComputerIsACheatingBastard, has all of the same limitations as a player character usually does, and more (No assists, ex gauge, and brave constantly depletes until you get abilities that fix that).
* General from Taito's ''GlobalChampion'' [[http://www.youtube.com/watch?v=aod5YACZ5vI versus a ''Guilty Gear XX'' champion from Japan]]. [[http://www.youtube.com/watch?v=1Lhgx14NReA Even SSFII Turbo's Shin Akuma isn't comparable to him]].
** Forget MUGEN, this guy is basically '''the''' hardest boss throughout all fighting games since its release. [[http://www.youtube.com/watch?v=Lcn7LuXSrD0 Observe.]] For further proof? Even the writers from game magazines ''gave up'' to write strategies against him.
* Ohga from Technos Japan's ''VideoGame/VoltageFighterGowcaizer'' is bastardly.\\
\\
He has absurdly quick recovery time. His basic special moves consist of a very damaging triple uppercut, a teleport that causes damage if your character is in his path (and you will be), and a Kaiser Wave-esque projectile. This projectile is quite large, and can only be blocked or jumped over; attempting to cancel it out with your own projectile will cause it to burst into five seeking fireballs. Jumping over it also leaves your character to be a sitting duck for his triple uppercut. And his defense points are bigger than any normal characters and he may even do a sweep-triple uppercut combo which may as well take 80% of your health. Ouch.
* ''RumbleRoses''. When you play through the story mode of any character, eventually you fight someone called Lady X. Which looks like a woman in a pantsuit with a metal mask and metal gloves. While she's obviously strong, has strong moves and is hard to humiliate (yeah, that's part of the game); she's not overpowered. Then when you beat her, the pantsuit comes off... [[RoboticReveal and you realize it's a cyborg]]. Now Lady X Substance is suddenly way stronger and almost impossible to humiliate... and can do weird cyborg stuff. She has unique moves that other characters couldn't do as they involve her upper body turning 180 degrees, her fist can detach from her arm and let her do a [[RocketPunch ROCKET PUNCH]]... and here's the worst part: All characters have "taunts" which build up their special meter a little but cause no harm to the enemy. HER taunt involves her body [[SpinAttack turning around like mad (and playing an alarm) and she quickly runs around the ring]]. If she touches you, you fly off with HIGH damage... and all you can do is avoid her. AND the taunt fills her meter completely.
** You get a few seconds to step out of the ring when you see her preparing the taunt.
* Young Toguro is the final boss of the generally substandard ''Manga/YuYuHakusho: Dark Tournament'', and has powers to match. Bear in mind that the previous fights were against very strong characters, but ones with normal restrictions. Toguro has [[LightningBruiser insane speed and power]], about a two-head height (and therefore a very large reach) advantage, a three-kick counter, and at least two combos that can put you down in no time flat. Both include low blows, forcing you to block while crouching - a difficult position from which to retaliate. And once you deplete his first health meter, he [[SuperMode powers up]] with a second one and becomes much more aggressive.
* ''VideoGame/DragonBallZBudokai 2''. Dragon World mode and Kid Buu, who among other things, was pretty much unblockable.
** It got worse in ''Budokai Tenkaichi''. Kid Buu has a Blast 2 move which is a long and crazy combo with nasty priority that the AI LOVES to spam in BT2. Then there's Android 13, whose super form has a normal Blast 2 that is XBOX HUGE, there's Broly who is surprisingly fast for a huge guy, Syn Shenron/Omega Shenron/Yi Xing Long, whose attacks have vicious priority and worst of all, Cell, who is just plain horrible.
** In ''Budokai 3'' Kid Buu not only gains an Ultimate Attack, but the new Ki system means he starts with 6 bars (whereas you generally start with 3). And to top it all off, to unlock Uub, [[GuideDangIt you must fight him down to 1 bar (difficult itself on later difficulties), then go back to Kaioken or base form (unless you'd been fighting there the entire time. Again, difficult), and THEN use the Super Spirit Bomb technique and WIN the power struggle.]] Note: If you lose the power struggle, he dies anyway. And you don't get Uub.
*** And that's not even to mention Uub vs. Omega Shenron on the hardest difficulty... or Omega Shenron in any of the story modes, for that matter. "30 Seconds to kill him AND do it using my Ultimate Move? WTF?!"
* Final Boss Gaara from ''[[Manga/{{Naruto}} Clash of Ninja 2]]'', who, among other things, [[ImplacableMan could not be staggered]]. No, not by any hit. No, not even then.
** Then, in Clash of Ninja Revolution 2, we have Kabuto as the final boss. He staggers. SOMETIMES. He'll usually knock you out of any combos, and even when you DO make him stagger (usually a low or high attack does it) he'll Substitute out of it, THEN combo YOU! Also, not mention he has a HealingFactor, which is actually normal, but the fact that he can't be staggered DRASTICALLY increases the effect of it, since usually the amount of HP he can recover goes down upon waking up from knockdown. Also, you need to finish him with Rasengan, which is hard to hit with and surprisingly weak.
** And Kabuto again in Ultimate Ninja 2. Fucker heals himself, stays out of your reach and god help you if you're using Kakashi, who as of the game's storyline, is unable to use any of his ultimate jutsu.
** And then we have Deidara from Clash of Ninja Revolution 3. You play as One-Tailed Naruto, which sounds like it should be easy, but it's not, because you're health goes quick and Deidara likes to spam his bug "art", which does a lot of damage. And if you're on hard mode, prepare to eat your Wiimote. And unless my copy is glitched, you have to beat him WITH your Ultimate, which means you have to be close. If you kill him with any thing else, you still lose! Damn it Deidara!
** In ''NarutoShippudenUltimateNinjaStorm2'', we have surprisingly, the Boss fight with Kakuzu, and the last phase of the boss fight with Pain:\\
\\
Kakuzu starts off relatively easy, but then he goes OneWingedAngel, and you have to be able to reach up to him while he's attached in between two trees, while he's spamming projectiles, like wind blasts, fire balls, and tentacles made of his Earth Grudge Fear bloodline that pop out of the ground really quickly, then finishes off with a Fire and Wind combined technique that's basically a Humongous LASER that can do a severe amount of Multi-Hit damage if it hits. And the fact that it takes much longer is more Dragged out than the other boss fights before it shows how hard it is. Unlike Pain, who's supposed to be hard as a final boss, Kakuzu's Surprise Difficulty also makes him ThatOneBoss.\\
\\
For Pain, the full amount of difficulty really starts to show. Pain is now in full awakening mode, but to tap it all of, because Bosses have infinite chakra, they can spam [[ScrappyMechanic Substitution Jutsu]] as many times as they want, as a Substitution bar didn't existed until Generations, and unlike the previous boss battles, [[OhCrap he will take advantage of this.]] His attacks also do ridiculous amounts of damage, and his AI goes up several times in level regardless what difficulty the AI is set on. He gets even harder when you loose [[SuperMode Sage Mode]], and your attacks start doing less damage.
** The final opponent in ''NarutoShippudenUltimateNinjaStormGenerations'', in [[JokeLevel Killer Bee's story]], is Kisame, with +100 attack. This roughly equates to all his attacks having the strength of an Ultimate Jutsu. Your best bet is not to let him hit you at all. And don't think you can relax once you've gotten his health down to 50%: his [[ComebackMechanic Awakening]] is... nasty, to put it mildly.
** And then ''Storm 3'' tops them all with the Reanimated Second Mizukage. Yes, '''[[FanNickname Trollkage]]''' is the game's SNKBoss, and his nickname has never been more fitting than in this game. Unlike the other characters above, he's an explicitly unplayable boss character, so the devs didn't even need to balance him. He basically takes all the annoyance of [[GetBackHereBoss Deidera]] and [[DopplegangerAttack Itachi]], ''combines them'', and [[UpToEleven somehow manages to makes them WORSE!]] He loves to spam streams of long-ranged water projectiles that go on ''far'' longer than any other ranged barrage (to the point where trying to block the the whole thing ''will break your guard''). Think you could stop that by getting close to him? Think again. He has an exploding Water Clone jutsu that works a lot like Itachi's (basically a moving barrier that explodes if you touch it), only ''it gets bigger the further it goes'', and it can chase you the entire length of the arena. And he also has a ''second'' clone attack that's easier to dodge, but much faster. The one saving grace the game gives you is that he does not appear to have an Ultimate. To top it all off, you have to fight him in essentially the middle of a BossRush with the ''other'' revived Kages, who are only marginally weaker than him. And after that you face (with no oppertunity to save)...
*** [[spoiler: The real]] Madara Uchiha, who has near PerfectPlayAI and some devastating attacks. Then again, this guy is practically an SNKBoss in-canon, so it's justified in his case. In fact, he's actually LESS of an SNKBoss in the game compared to in-canon, considering this version lacks [[spoiler:multiple massive meteor drop, instant knock-out plant pollen, and other moves.]]
* In ''Daraku Tenshi'', you get the wonderful chance to play against two powerful bosses. First, you've got Trigger, who has a gun. Keep in mind that only two playable characters have projectiles....but only ONE can use it infinitely, so just dealing with him alone can be a pain. And finally there's Carlos, who has a huge freakin' sword that can kill you in three or four hits alone. And if he hits you with his super, it's basically instant death. Yeah, did you know that people who worked on this game went to work on ''KingOfFighters 99''-2003? Not surprised?
* Rouge from ''Ranma 1/2: Battle Renaissance'' on PS1: Not only do her attacks have priority, but she has two degrees of a normal special attack where she flings countless projectiles at the player along the entire vertical axis. These WILL carry you up and back across the entire screen. Good luck surviving long enough to even get back into attack range.
* ''[[VideoGame/AsuraSeries Asura Blade]]'' has the sub-boss, Curfue. The best way to describe him is Cable on massive steroids and crack. He's got a laser rifle, grenades, a combat knife and at least two sidearms, and he uses them all to horrifically great effect. On you. A typical battle with Curfue is not unlike playing ''[[VideoGame/DonPachi DoDonPachi]]'' - there's so many lasers, bullets and apocalyptic explosions rocking the screen and turning you to ash, you have trouble figuring out what's going on. As if the chaos wasn't enough, Curfue's most damaging move must be blocked low or it'll wipe you out, and he's got a massively damaging close range grab that can take off nearly half your health. And he can use his super attack in midair, too, which is bad since it has no startup and comes out of nowhere.
* Kron, the final boss of PSX FightingGame ''CardinalSyn'', is a particularly ruthless example. The [[OneWingedAngel final form]] of the game's BigBad, [[NamesToRunAwayFromReallyFast Syn]], Kron is a ''freaking huge dragon'' who, in addition to sporting ridiculously powerful attacks (fire bombs, anyone?), possessing the ability to fly, and being so huge and powerful she takes ''much'' less damage than any other character, she also has a one-hit kill move (in which she ''bites the player character in half'') which she tries to utilise quite frequently. Also, the stage in which you fight her has an infinite time limit, which means that the player is unable to be a cheap bastard by simply getting a few hits in and staying out of her way until the timer runs out, out of pure desperation.
** Even worse, Kron can be unlocked as a ''playable character''. And when she's unlocked, the player can face her in ''any'' play mode. ''Including Survival Mode''. In which she's just as frustrating to fight as she is in Arcade Mode. Yup. Just ''try'' getting a good Survival win rate when you're facing her.
* Bloody Marie, the final opponent of VideoGame/{{Skullgirls}}. She can't block and she can't move while over 50% health, but she has [[ImmuneToFlinching permanent super armor]], meaning her attacks don't stop even when she's hit, she can't be grappled and soaks damage like crazy. But the worst is that, when very low on health, her hitbox becomes '''''minuscule''''', to the point that you can't hit her with most standing attacks and specials, which is a very big advantage for her since most of her moves are good anti-airs making a nearly impossible boss to beat with most characters (except Peacock fittingly enough) in the Pre-Patch version of the game. Even after the patch, however, which adds hitstun, and more visibility to her attacks, she remains a difficult boss to defeat.
* Metal Sonic of ''VideoGame/SonicTheFighters'' will grind you into the steel floor of his stage. Faster and stronger than regular characters, his grab involves dropping you from the air to take out a little more than a quarter of your health, and he even rips off [[StreetFighter M. Bison's]] Psycho Crusher for devastating effect. Think you can cheese your way past him by breaking all of his barriers? Doing that only [[TurnsRed pisses him off]] to the point where he spams the aforementioned Psycho Crusher (which is unblockable, by the way). Makes it all the more satisfying when you achieve Super Sonic and smash his face in. Robotnik? AnticlimaxBoss.
** Oh, yeah, and he has an attack that ''takes off half your health in a single strike''.
** Interestingly, Robotnik (or "Robotonic" by the intro) actually has some devastating moves, as evidenced by using a cheat device to unlock him. His status as an AnticlimaxBoss may have actually been a case of AI Stupidity. This is [[AllThereInTheManual explained]] as being because Robotnik has never used this particular machine before, so he doesn't know the controls yet. You also have only 15 seconds to beat him or you get a DownerEnding where the Death Egg blows up ''with you inside it.'' They ''had'' to make him a joke in order for it to be possible to ''win''.
* In the SD Hiryu mode from the N64 RPG/Fighter hybrid known as Flying Dragon, there's a boss known as Shin Ryumaou. Not only is his moveset cheap (featuring a speedy fireball move and a triple jump kick that almost always counters your combos), he's also equipped with a rare item that can hit you no matter where you are, is unblockable, and absorbs your HP. It doesn't stop there, because he also has three forms, and his second form is the worst. In his second form, he cannot be stunned half the time, none of your combos work on him, and above all, '''he revives nine times'''. Granted, the amount of HP restored decreases after his first revival, but this guy is an unbelievable hassle.
* Felden, from Sunsoft's fighting game ''Galaxy Fight'', was totally unbeatable. All his attacks had absolute priority and he could hit you from a character's lenght, while taking good chunks of healt.
* Makaitaitei Fernandez/[[SpellMyNameWithAnS Fernan]][[NamesToRunAwayFromReallyFast death]] from WakuWaku7. While he was a big target, he could hit you from a distance with all his attacks and they all hit hard.
** While all other characters had to charge their Hara Hara (unblockable max level super) attacks, Fernandez's Hara Hara comes out instantly, and he will use it whenever he feels like it.
* ''VideoGame/MagicalGirlLyricalNanohaAsPortable: The Gears of Destiny'' has [[{{Moe}} Unbreakable]] [[BadassAdorable Dark]] in her FinalBoss form. Her attacks has ridiculous priority and does serious damage, her melee attacks has more reach than most of your characters, her ranged attacks cover a wide area, both her melee and ranged counters hit fast and hard, and unlike the player, her ManaMeter isn't drained by dashing or casting spells. The first round is particularly brutal as her game-best defense is augmented by a Super Armor that grants her a ManaShield and makes her ImmuneToFlinching while it's up, giving the player a sudden and overwhelming urge to introduce their PSP to the floor the hard way. The second round is a bit easier since it starts off with U-D without the Super Armor, but once you get rid of her life bar, [[TurnsRed she replenishes her health to full and gets her Super Armor back with two mana bars to blast through this time]], and she's effectively invulnerable for several seconds due to being in [[SuperMode Full Drive mode]]. However, the game shows some mercy at this point, as she has [[GlassCannon paper-thin defenses]] on this part of the round so the player could take her down before the timer runs out.
* In ''Battle Assault 3: Featuring Gundam Seed'', we have the FinalBoss, Rau Le Creuset and his Providence Gundam. Now you fight him on the stage before, but you had an ally backing you up and it was just him with no time limit. This time however, you have no ally, there are about 4 of the strongest enemies preceding him and you have a time limit of around '''2 and a half minutes'''. Oh and just like the many examples above if you time out against him, even if you have more health than him, you lose because [[spoiler: the [[KillSat GENESIS]] fires, destroying the Earth]]. And even though he himself isn't SNK boss material, albeit he does love to use BeamSpam with his funnels and frequently uses his more powerful attacks, the fact that by the time you kill the previous enemies you're already scrambling for time and likely to make mistakes fighting him, causing him to kill you easier.
* ''VideoGame/{{Divekick}}'' features S-Kill as the final boss of story mode. He is playable normally, but the boss version has permanent Kick Factor, granting him infinite access to his Trick and Parry special moves. Trick instantly teleports him to the most optimal angle where his kick can reach you, while Parry allows him to block your attack and get a guaranteed Headshot, which dizzies you in the next round.
* The licensed games of ''Series/KamenRiderDragonKnight''
** In the Nintendo DS version of the game the final boss of every mode is Xaviax. He is constantly protected by a shield that reduces the damage of all of your attacks by over 50% and prevents him from flinching when you attack him and he has 3 super moves where he fires giant lasers at you that are nearly impossible to dodge. His third and most powerful laser attack WILL kill you in one hit. He fires five lasers; the first knocks you down- the other four hit you while you're down and helpless. Fortunately Xaviax can be unlocked for use without any decrease in power when you use him.
** The Wii version of the game will almost always have a fight against a Rider who is always in Guard Vent mode near the end of the Mirror World mode- the Rider in question will almost always be Strike or Sting; sometimes Thrust. Enemies in Guard Vent mode take half the damage from your attacks and never flinch when hit by your attacks. If you throw a punch, they will throw a punch without stopping and before you can react. Summoning your Advent Beast or using a Strike Vent card (if your character has one) can cause an enemy to flinch while in Guard Vent mode, but doing both requires using a lot of your special gauge and the latter can only be done once per fight.
* Wrestling/TheUndertaker, from the "Defeat the Streak" mode of ''WWE 2K14'' definitely qualifies. The match starts out normal, but the more damage you hit him with, [[AssPull the more powerful]] [[NewPowersAsThePlotDemands he becomes]]. Examples of this are the lights going out, 'Taker [[TeleportSpam Teleporting after being hit with a finisher]], countering pins into a chokeslam (as Retro 'Taker) or the Hell's Gate submission hold (as Modern 'Taker) and losing all damage inflicted to him. Fighting him with Batista, Wrestling/ShawnMichaels or even [[Wrestling/KevinNash Diesel]] is difficult as it is; trying to take him down with King Kong Bundy is damn near impossible.
** Retro Undertaker is slightly less SNK Boss-like than modern-day Undertaker -- he only counters pins into a chokeslam (as mentioned above) and can, in fact, be beaten in less than 10 minutes -- but the current Undertaker is damn near impossible. Oh, and both 'Takers can easily hit you with a finisher [[TheComputerIsACheatingBastard REGARDLESS OF WHETHER OR NOT YOU HIT R2 TO COUNTER]] a microsecond after picking you up off the mat. Oh, and he's also just a smidge faster than Modern 'Taker, so it's truly a case of Pick Your Poison---especially if you intend to unlock all the WrestleMania photos by beating him with Wrestling/TripleH, Edge, Wrestling/CMPunk, [[MightyGlacier Big Show or King Kong Bundy]].
** Oh, and for those of you thinking you can just beat Retro 'Taker instead of Modern 'Taker to earn [[AndYourRewardIsClothes the alternate attires]] you get for ending the streak? You HAVE to beat Modern 'Taker with either [[Wrestling/KevinNash Diesel]] or King Kong Bundy to unlock Retro 'Taker. Yeah...[[SarcasmMode have fun]] [[ThisIsGonnaSuck with that]].
* In ''[[{{VideoGame/Aquapazza}} Aquapazza]]'', the final boss is Ma-ryan and a main character of her choice depending on who your main character is. In addition to her normal partner attacks, she has [[SecretAIMoves Super Move variants of those attacks]] that she can unleash at any time. Her partner is an emotionless shadow clone of one of the main characters and doesn't experience any fluctuations in strength during the match like your character does. Finally, if she winds up on the losing end of a beatdown that would otherwise decide the match, she can ''rewind time'' to recharge her main fighter's health to 50% to delay/deny your victory.
** Then you face Chizuru in Another Story mode, who is by far the strongest LightningBruiser in the game. One of her special attacks even involves a textbook SpeedBlitz. If you're not careful, she can combo and fling you all around the screen to your death in a matter of seconds.
[[/folder]]
[[folder:Doujin Fighters/Fan-made Games]]
* ''EternalFighterZero'', an otherwise very balanced doujin game, has [[VisualNovel/{{AIR}} Kanna]] as the final boss. Her melee attacks have immense range and her projectiles are fast and cover a lot of area. Her AI is also incredibly skilled at blocking attacks, making it difficult to land any normal hit. Her character is available to the player as well, without any nerfing at all, which is why she's banned from tournament play.
** Kanna's only banned because players acually use the insane damage, comboability, and priority of her attacks, whereas the AI only defends well. Unknown[[spoiler:/Mirror Mizuka/Eien no Mizuka]], however, has been a source of frustration, as she (in her boss mode) takes full advantages of her moves' invincibility frames and spams high-priority projectiles that do almost as much damage blocked. (Thank god for the fact that you can't be chipped to submission in this game.)
* ''SuperCosplayWarUltra'''s Zenka, based on the (in)famously badass [[VideoGame/SuperRobotWars Sanger Zonvolt]], has full screen specials, supers and [[FinishingMove EX Super]] (some of them unblockable or do massive chip damage), high priority, is much faster than her range would imply and tends to exploit these advantages to the fullest.
** Next, comes Zmega, based on [[KingOfFighters Rugal Bernstein]], but in Story Mode, he's weaker than what you'd expect from a ShoutOut to one of the greatest {{SNK Boss}}es out there. Still, the game plays it cruelly in that there's only one round against him: should you lose, you automatically lose the game, but given the stand in Zmega's difficulty compared to Zenka, it's rather relative. However, this trope applies to his form taken at the end of Battle Royale Mode called Shin-Z, so much that even if you have an allied CPU still standing to fight with you, his sheer tendency to combo his specials directly to a super absurdly well, no thanks to crazy priority, turns frustration and keyboard breaking UpToEleven. Should you lose against him, you have to engage a survival battle against 5 enemies first before he pops out again.
** Finally, in comes Alpha, based on TheFourGods from VideoGame/SuperRobotWars. The TrueFinalBoss in Story Mode, Alpha carries the '''WORST''' use of super and EX Super spamming possible, moreso than Zenka. In fact, he will often combine them in a normal combo or interrupt them in the worst timing possible, but that's not to mention Alpha can interrupt during ''your'' combo into his supers. Said supers are like taking the full brunt of Zenka's supers (though Alpha's EX Super is far worse than Zenka's).
*** The newest edition of the game now gives Alpha [[StreetFighter Gill's]] Resurrection super (full hit point restoration, unless interrupted), provided Alpha's POW bar allows him to use it if KO'ed for the round.
*** It's worse than Gill's Resurrection. With Gill, you could just stand in front of his body and jab repeatedly to interrupt it and easily leave him at 25% health. But Team FK apparently took notes and made it so Alpha's Resurrection pushes the player away to keep that from happening, making it harder to hit him quickly.
* Nightmare Cat, from ''Azumanga Fighter'' (a doujin FightingGame based on ''Manga/AzumangaDaioh''), is a permanently Burst Moded version of Kamineko. Now bear in mind that Burst Mode normally has to be triggered manually by filling all 5 bars of the special gauge, AND being at low health, but that gains access to that specific character's ultimate move, and having infinite uses of the super moves. Kamineko is one of the more annoying (but balanced) characters due to its height (it's a cat, as opposed to the rest of high school aged cast), however Nightmare Cat fires off super moves rapid fire, and uses its short height to its advantage, ensuring you can barely land a hit. Fortunately, [[HopelessBossFight win or lose you progress to the next battle anyway]].
* The flash game ''South Park: Tokugawa'' has a final boss that is essentially, if not completely unbeatable, though this is in part due to poor game design in general, all of the unblockable moves and teleporting don't help.
* Shizuru in ''{{Mai-HiME}}: Fuuka Taisen'', when fought in Natsuki's Story mode. Shizuru loves to use her Super Special summon less than ten seconds into every battle, which fills the ground with slowly-advancing Kiyohime snake heads that are very hard to block, and will keep going indefinitely until they reach the edge of the screen. In addition, her "evil mode" lacks a block animation, which makes it complete guesswork to determine whether or not your hits connect, and has no problem spamming her whirling spear attack up close or whenever projectiles come her way. So, in essence, she's almost like her anime incarnation. [[spoiler:Good thing her "good side" is an unlockable character]].
** Natsuki may be better since she has ranged attacks. Consider Haruka the headbutt-main fighter...
* {{MUGEN}}, the fighting GameMaker, obviously has several hundred of these. It's a good place to find most of the other entries on this list. There's also an entire cottage industry devoted to producing overpowered, nigh-invulnerable characters, many seemingly written for the express purpose of beating someone else's overpowered, nigh-invulnerable character. This makes for an SNK Boss Arms Race of sorts. Some of the most noteworthy examples include:
** [[Manga/DragonBall Z Hyper Gogeta]] by Supermystery, with his screen-filling Kamehameha.
** The Legendary [=SSJ3=] Nightmare, probably one of the more infamous examples. Broly has a minute long intro of him powering up that knocks the opponent down and into a wall. If you've managed to survive that you have to deal with an annoyingly sturdy shield, shitloads of ki blasts and noisy shouting. And when he wants to, he can go straight to [=SSJ4=] where he becomes literally invincible and coats the screen with explosions.
** Master Geese by Cannon Musume, an MVC-styled version of Geese Howard that has been nicknamed "Master Cheese" for his unblockable and cheap super moves. Not to mention his Deadly Rave is a OneHitKill.
** [[SuperMarioBros Hyper Neo-Kamek]] by Kamek, who gives a new definition to the phrase BeamSpam.
** Light Yagami from ''Manga/DeathNote'' who, well, has [[OneHitKill a Death Note]]. (and [[MediumAwareness CAN READ HIS OPPONENT'S NAME FROM THE TOP OF THE SCREEN]])
*** Mitigated slightly by his [[GlassCannon low defense.]] Doesn't excuse him from this trope, though.
**** Also leads to a couple of moments of rage, where he shouldn't be able to tell the name. For example, VisualNovel/FateStayNight has a character in Mugen called Archer, only his real name is [[spoiler: Shirou Emiya]], only that isn't his birth name, and is actually the name he was given [[spoiler: after the grail fire of FateZero wiped out a large portion of the city he lived in, with him as the only survivor who can't remember anything before the fire.]] Meaning Light can kill characters using an alias of an alias of a completely unknown name.
** Dark Reiko Hikari by Kamek, a crazy, blisteringly fast teenage girl who also hits you with a bus, and has TWO OneHitKill moves. Voiced by [[VideoGame/DisgaeaHourOfDarkness Flonne]].
** The Rox Howard Clones, who turn a one on one into a one on seven.
** Just about any 'Evil Ken' type (a wide variety of Ryus, Kens, Akumas, and Dans which began, apparently, with a certain build of Ken), who all try and outdo each other with ridiculous priority moves, combo capacity, and overpowered super moves.
*** Combine this with a lot of [[ThisIsYourPremiseOnDrugs impressive chemicals]] and crank it UpToEleven, and you have Rare Akuma.
** Hyper Akuma also deserves a mention. To break it down completely, he has:
*** Ability to almost completely ignore attacks from other characters.
*** Ability to gain energy from being hit.
*** Insane attack speed. Racking up combos into the double digits is common when he is in play.
*** Very high strength. With the right moves he can wipe out an opponent within 10 seconds.
*** High movement speed. Capable of traversing the screen very quickly in a single leap.
*** A move which lets him cross the screen within 1 second and usually ends up behind the opponent. Also, he cannot be hit when using this move.
*** Another move which lets him cross the screen quickly. When he passes his opponent, it counts as a 7-hit combo. Spammable.
*** Projectile attacks which act as 8-hit combos. Also spammable, especially in air.
*** A healing factor that would put Wolverine and Deadpool to shame. Heals through super attacks.
*** Supers which often cover the screen, cannot be interrupted, have combo numbers ranging from 20-999, and eat up at least a third of the opponent's health bar. In addition, some of the Supers cost very little energy and some even recharge your energy bar.
*** Ability to SPAM super moves by mashing buttons at the right time while a super move is being performed.
*** And to top it all off, an aura which can reduce the opponent's health bar to nothing in seconds. Hyper Akuma has this on BY DEFAULT.
** Neo-Reaper Isabeau [=SSJ9=], for an unblockable near-insta-kill fire attack.
** [[VideoGame/FinalFantasyVII Sephiroth]], whose melee attacks cover half the screen, has 200% health as well as 220% defense, has three instant-kill moves (two of which are unblockable and unavoidable), can teleport with invulnerability, as well as charging his super energy invincibly, and is un-comboable.
** What about the [[{{Bionicle}} Toa Mata]]? Instead of being something like Pain from Naruto Ultimate Ninja Storm, each button is a different Toa attack. But Only Tahu is playable from the start, and pressing a button while the Bar is at halfway will summon a different one. This is not the end however:
*** You have to hit Tahu in order to damage them, and he is usually elbow deep in his spamming teammates.
*** So Many ultimate attacks, that you don't understand the meaning of cheap.
*** Each Toa has an ultimate, which is Telegraphed by a a white sheen, and usually takes chunks of health off of your bar.
*** Then using the TAUNT button, you cause them to do ALL their Supers, at once.The textbook defeinition of bad Sportsmanship.
*** Then there are fusion attacks, where two Toa do a new super attack, which again, takes chunks(Tahu and Lewa= Fire tornado, Hali and Pohatu, water stream= with a rock willing Onua and Kpaka= Ice shard blast, then a earthquake launching up MORE ice spheres.). And they [Take it up to Eleven] by going into a Kata form, where elemental fury is rife.
*** Though they need their supers to do most of the afromented, a palette allows they to have all six pre-summoned, and will a constantly full bar. You may soil your clothing now.
** And while we're at it, there's Gustav Munchausen from the K.O.F. Memorial game, who features insane chip damage, full-screen supers, and a brutal AI, and gains super energy ultra-fast. Most critically, unlike most SNK bosses which reverse your moves with one hard-hitting move, Gustav opts to execute a 15-hit melee combo that fills his super bar, then uses one of his energy pillar supers for half your health!
*** The midboss Psyqhical is widely considered to be even more broken than Gustav himself. He possesses all of Gustav's traits, but also has ''full-screen specials'', abuses counter moves that do ridiculous damage, can slow time down, and even trap you in a cube to take out 80% of your health. To top things off, the rest of his moveset is basically BeamSpam.
*** Someone thought it would be a brilliant idea to fuse the above two bosses, producing the edit known as Gustav M Type-F. He has a combination of both bosses' moves, and those belonging to Gustav have improved juggle qualities. But what makes him stand out is his infinitely chainable, lightning quick, invincible teleport which can be canceled from and into anything - a counter, a throw, even his highly damaging grab super! Worst of all, his AI really knows how to juggle and knows an infinite with his anti air strings move and his energy pillar supers, and it will happily abuse it!
** The second K.O.F Memorial game brings us Element. Element moves at absurd speed, possesses several annoying grabs and slashes that take off large sections of your healthbar, spams a variety of multi-hit infinite priority projectiles, can summon explosions UNDER YOUR FEET and best of all, has White's instant-kill desperation move, complete with fake KO message!
*** In addition, Element is less a unique character than a class of extremely broken Iori edits. Since he was introduced at the ending of the first K.O.F Memorial game, people started speculating about him and making their own versions. This class of bosses has very flashy super moves that tend to revolve around elemental attacks, and when they get a hit on you, they will empty their extended super bar on you for an instant kill.
** A Japanese imageboard took it upon themselves to make a Mugen game starring practically all their memes; as you may have guessed, [[HilarityEnsues insanity ensues]]. Still, ''nothing'' can prepare you for the final boss, Hato Sabure. To start, it's what appears to be a giant chocolate peep with GlowingEyesOfDoom. Who can fly via a jet engine and drop on you ForMassiveDamage, randomly counter physical blows by knocking you to the other side of the room, and is an absolute ''master'' of projectile spam-it has eye lasers, bombs, missiles, and fireballs, which all fire out of mechanical hatches that appear from its body. Fortunately, as with the rest of these bosses, the wide variety of characters allows a huge amount of ways of beating him to death.
** Gold [[EternalFighterZero Ayu]] [[{{Kanon}} Tsukimiya]]. She's a little angel girl. The first fight with her is like fighting a tough (but not horrible) AI opponent. Take her out once though... and she gains a massively fast regenerating super bar, regenerating health, and [[VideoGame/GuiltyGear I-no's]] infamous Megalomania attack.
** Cheap Boss Type, is a parody of these. You think fans would know better than to complain about it [[ExactlyWhatItSaysOnTheTin given the name]]. Also brings up the question of why M.U.G.E.N. players simply don't delete crap characters and move on to better ones.
** Zeeky H. Bomb, if only due to the fact that all his moves are strikers bar two. The saving grace of this fight is that Zeeky has no custom AI, and as such will constantly move randomly back and forth, leaving himself open.
** Don Drago has made Geese, Yashiro, Takuma and Goenitz, and has a habit of including all their movelists into seperate modes. Do the maths.
** [[MegaManZero Omega.]] He's a ''fair'' and very well-done example compared to the rest, sure, but the thing is, in the original games he appeared in, you can run away and take advantage of his AxCrazy fighting style. This time, you can't. He has MercyInvincibility which makes him almost immune to combos and can easily heal himself anytime he wants. On top of that, he has new supers. OhCrap. The only thing he ''can't'' do is rapid firing his Z-Buster. Because ''that'' would be cheap, [[WordOfGod says his manual.]]
** And then there was "[[ScaryScorpions Mecha Scorpio]]". Even the author is now ''[[OldShame ashamed]]'' of it! Here's all the things wrong with it-
*** Short, making it hard to hit with high attacks.
*** Huge damage with its infinite priority claws, tail, fire and earth based attacks, as well as fast power gain from just using them.
*** It could poison the opponent for the round every time it hit with its [[BewareMyStingerTail stinger tail]], causing them to flinch and take damage every few seconds (the poison effect was stackable too!). Worst of all, the poison never went away!
*** Countered all grabs with a powerful move, not only did it take off a quarter of the opponent's health, it also gave them the poison status too.
*** A OneHitKill that it WILL use if it got up to max power, and it could only be avoided by crouching and blocking. If the opponent didn't do so, they would be sucked up by a sandstorm, dropped into the middle of a desert, crushed with four rock pillars, then blown up.
*** Finally, if most of the above-mentioned {{Game Breaker}}s were used against it, it would turn invincible and all its attacks would become {{One Hit Kill}}s!
** ChuckNorris. If anything, the internet rumours understated his power.
*** He's ''[[GameBreaker way beyond]]'' SNK Boss. At least the player has a small ''chance'' to defeat an SNK Boss... as for fighting against Chuck Norris, no such luck - The Heart Attack Button doesn't even work on him! If you didn't think to place Norris outside the normal fighting order, [[UnwinnableByDesign the jig is up when you run into him]].
** Most ''VideoGame/{{Touhou}}'' characters can become this if their movesets are ported directly. The original fighting games are built around ''BulletHell'' as opposed to melee and movesets are balanced accordingly, giving each character massive barrages and means to counter the same. Contrast this with the average fighting game character who is almost melee exclusive.
** Finally, speaking of edit characters, many of the above mentioned SNK bosses have been ported into MUGEN. Some authors will port them exactly as they were in the original game. However, many authors will edit them to tack on new supers and special moves, making them an even worse pain in the rear to fight. Using the King of Fighters Memorial edits as examples:
*** Goenitz gets a couple of screen filler supers where he fills the screen with tornados and a version of Yonokaze that travels towards his opponent and combos them for 8 hits.
*** Orochi receives several Marukare variants, solely for the purpose of being cancelled into each other to obliterate his opponent's lifebar. It is also almost impossible to see when he uses his counter moves!
*** Krizalid gets a MegatonPunch super that does serious damage, souped-up versions of Desperate Overdrive, a super grab and a MAX move where he fills the screen with explosions.
*** Original Zero and Clone Zero have their movesets combined, allowing the former to use both his strikers and Clone Zero's Shadow Arts. As with Orochi, he receives a couple of variants to his Black Hole.
*** Igniz gets a full screen version of Chaos Tide (the quad-energy blast), a screen filler, Krizalid's End of Heaven super, the Zeroes' Black Hole and a super where he charges up a large energy ball that is an instant kill if not blocked.
*** Sinobu returns, but several times as cheap; he uses lightning and wind element attacks simultaneously, has TWO 4-hit one frame projectiles and is very fast on foot. Most critically, remember those orbs that surrounded him in his official appearance? They're now a super that forces you to block, allowing Sinobu to back you into the corner and chip you to death!
*** Not even the relatively balanced midboss Kusanagi is immune. He's mostly the same... except that he now runs at 50 miles an hour for continuous mixup pressure. Have fun escaping the corner!
* In the first renditions of ''MeltyBlood'', we had Aoko Aozaki. She was pretty much a FightingGame version of a VideoGame/{{Touhou}} character, BeamSpam included. She was later balanced as a normal character and given a new moveset. There was also the secret boss Giant Akiha, who was a parody of [[VideoGame/{{X-Men vs Street Fighter}} Apoca]][[VideoGame/MarvelSuperHeroesVsStreetFighter lypse]], who did an insane amount of damage. A later revision replaced G-Akiha with Neko-Arc, a small, deformed cat version of Arcueid which had attacks with absolute priority. Also, she was small and very hard to hit.
** Act Cadenza introduced White Len, an alternate version of Len that easily takes Aoko's former place as the SNK Boss. She had a drastically different moveset than in the Ver. B update, and most of her attacks had absolute priority and did a lot of damage. Neko-Arc also got an alternate version called Neko-Arc Chaos, who parodied Nrvqnsr Chaos' moveset but with the same attributes as the original Neko-Arc.
** Ver. B of Act Cadenza introduced a new hidden boss: Neko-Chaos Black G[[NumberOfTheBeast 666]]. Created by Kohaku in an alternate story mode for Neko-Arc, this is a true successor to G-Akiha who loves to abuse BeamSpam, but also has other attacks like a drill and a missile arm. It's extremely hard to beat due to the large amount of damage it does. At first it can only be fought in Neko-Arc Chaos' secret story, but if you beat it you unlock Giant Attack Mode, which lets you beat it with any character. The catch with Neko? He's pretty susceptible to multiple-hit attacks after he attacks, so you can pretty much punish his moves with a combo or two.
** Actress Again gives us Dust of Osiris, only available to certain characters. It's an alternate-reality version of Sion, and it's pretty cheap in its own right. Look it up on Website/YouTube and see for yourself.
*** And then Current Code made her even '''worse''': She now has an Arc Drive, which makes her invincible for a few seconds, after which, she ''nukes the entire screen with an unblockable attack''. It is possible to dodge/shield it, but you need a good timing.
** Also in Actress Again, if you beat Boss Rush mode without losing a round, well... you get to fight Archetype Arcueid, who can ''kill you instantly.'' And is then unlocked as a playable character... ''with all her moves and damage intact.''
* ''VideoGame/{{Touhou}}'' (fortunately the Touhou fighting games avert this trope in multiplayer by keeping story mode spellcards separate from multiplayer):
** ''Immaterial and Missing Power'' has preliminary boss Yukari Yakumo and her ''Infinite Speed Flying Object''[[note]]unblockable and ungrazeable beams that give you about half a second to read and dodge[[/note]], and FinalBoss Suika Ibuki's ''Pandemonium''[[note]]DeathInAllDirections at its finest[[/note]].
*** Everybody is a more dangerous opponent in Story Mode (where these two are bosses); the gameplay consists of bouts of normal combat with your adversary interspersed between trying to dodge one of her souped-up, perpetual-use spell cards while getting enough attacks through to knock her out of the casting trance. They also get more life and some armoring. Yukari and Suika simply take this well beyond any of the regular Story Mode characters.
** Tenshi Hinanawi of ''Scarlet Weather Rhapsody'' eventually fits this trope. While at first she's only a little stronger than most of the enemies you've fought so far, her final attack is absolutely brutal. If you don't knock her out before she starts doing it, she starts spamming almost impossible to dodge lasers. Oh, and if you get hit by one, she starts another one before the first one finishes, so if you ever get hit by one of these lasers, there's a very good chance that you'll just die.
*** In [[HarderThanHard Lunatic mode]], she fires 3 at once which actually is quite unfair. However due to the limit system it will only do about 3k damage, which is still a lot but not enough to kill you. The gimmick to this spell is to bait her lasers on 1 side then graze though them. Also, this attack will guard break near instantly; if you accidentally started blocking, border escape immediately.
*** Yukari Yakumo is also a brutal example (again). Her very first spellcard may not look like much but the projectiles move in a specific pattern that makes it impossible to counterattack. If you're hit once, the next projectile will get you the precise moment you recover, leaving no time to block. If you attack after a successful dodge, you will have no time to block, and once you're hit before your attack connects, it's negated.
* Act Cadenza Strife, a fanmade TalesSeries fighting game, has several boss characters such as [[VideoGame/TalesOfPhantasia Dhaos]], [[VideoGame/TalesOfTheAbyss Synch and Nebilim]], [[VideoGame/TalesOfDestiny Hugo and Barbatos]], and [[VideoGame/TalesOfEternia Shizel]]. All of them have at least one ridiculous gimmick that makes beating them a pain (for example, at low HP Barbatos will use a completely unstoppable move that instantly kills you no matter what), but in general it's not too hard unless you're doing a boss rush. However, that's because those guys are all playable (though the CPU versions have benefits the playable versions do not, such as the aforementioned instant kill move). However, the game also has several unplayable completely ridiculous secret bosses that fulfill this trope.
** First off is [[VideoGame/TalesOfSymphonia Yggdrassil]]. His main attack, Yggdrassil Laser, hits everything in front of him for a ridiculous amount of damage, makes him invincible during the entire animation (including when he starts it), and is often spammed. He also has two uninterruptable and unblockable moves that he can bust out if you get too close. His other attacks are almost all spells, which normally require a casting time of some sort. Yggdrassil instant casts them. Did I mention that his version of Photon counts as a grab, so it can't be blocked? And that it can hit you no matter where you are on the field? Even worse, his LimitBreak can be used for a piddling amount of TP, does ''massive'' damage (about a third of the average lifebar), and the only way to avoid it depends entirely on your luck? And as a final Screw You, at low HP Yggdrassil uses a completely unstoppable attack that hits the entire screen for a decent amount of damage, which will probably kill you.
** Next is [[VideoGame/TalesOfEternia Nereid]]. She(?) has a ''ridiculous'' amount of immunity frames, namely every time she casts a spell. Oh, and almost her entire movelist is spells. Spells that she will spam like crazy, usually causing the player to literally have to wait until her AI makes her use a spell that doesn't leave you completely helpless for ten seconds. Aside from that, she is fond of casting a spell that causes rocks to shoot out of the ground in front of and behind her. These rocks can not be blocked, and during the entire animation Nereid is completely invincible. And that's not even counting her LimitBreak, which does a large chunk of damage and has a tendency to break your guard with the initial (weak) hits, allowing the final (strong) hit to rip into your HP. Finally, she also has a low HP desperation attack that hits the entire screen. Unlike Yggdrassil, though, Reid Hershel, the main character of Tales of Eternia, can counter her desperation move with an attack that instantly kills her as a reference to VideoGame/TalesOfEternia.
** And last, but not least, is the living incarnation of bullshit: [[VideoGame/TalesOfVesperia Alexei]]. This asshole spams spells that hit the entire field, such as the infamous Tidal Wave. But unlike Yggdrassil and Nereid, he's actually open for attack while casting. Or he would be, but because he's an asshole his spell guard (basically, whenever you cast a spell in {{ACS}}, your character will not flinch for a certain number of hits. This allows a caster to actually cast a spell, but also means that melee attackers can interrupt the spell if they reach the caster fast enough) is miles above other characters, with the end result being that even if you attack him for the entire period of his spell casting you can't stop the spell. But when he's not casting, Alexei is usually doing one of three things. Either he's attacking you with his ridiculously long range melee moves, using his LimitBreak, which is just as absurd as it was in VideoGame/TalesOfVesperia, or going into Overlimit 2 so he can kill you faster.
* ''[[VisualNovel/UminekoNoNakuKoroNi Ougon Musoukyoku]]'' CROSS has one of these after beating Arcade on Hard difficulty without losing a single round. In it, you get a [[BonusBoss Final Battle]] "to end the game", where you have to fight against two Black Battlers on the same team.\\
\\
As if the difficulty level isn't enough, he also gains life from damage dealt (which is usually a 100% heal), recovers life over time, takes little damage, does [[SuperStrength gigantic damage]], crushes defense within a few hits, has infinite Special Meter and auto guard (can block while attacking or even while taking damage).\\
\\
And while you need to change your character using a usually risky and highly-punishable move to activate one of your two special abilities for a short period of time, Black Battler has eight of those special abilities ALWAYS active.
* In the KatawaShoujo fan game, ''Katawavania'', after defeating Lillycula, you go up against her [[StrongerSibling older sister]] Akira. Akira can frequently FlashStep around the arena, often behind you, with little to no warning, has several attacks that are difficult to avoid (such as homing missiles and a beam rifle that can only be dodged by sliding at the precise moment it fires), and has virtually no telegraphing or pattern. The second ending indicates that the creator was not expecting many people to defeat this "unfair" boss.
[[/folder]]
