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[[caption-width-right:290:I thought [[VideoGame/PunchOut this game]] [[TheComputerIsACheatingBastard was about boxing.]][[note]][[FridgeLogic How is he supposed to pull the trigger]] [[WebAnimation/HomestarRunner with boxing gloves on...?]][[/note]]]]

->''"Hey, who allowed them to join this tournament? They're way too strong to compete; I mean, what's up with that? Someone is going to have to take that team down!"''
-->-- '''Announcer''', ''[[VideoGame/CapcomVsSNK2MarkOfTheMillennium Capcom vs. SNK 2]]''[[note]]Funnily enough, this is not in reference to any particular enemy (although Shin Akuma and Ultimate Rugal are pretty damn broken); this is just one of the random match-end quotes from the announcer[[/note]]

An '''SNK Boss''' is an opponent in a FightingGame who [[ScrewTheRulesIMakeThem breaks the rules]] that enforce CompetitiveBalance to such an absurd degree that they are considered to be vastly superior to every other character in the game. The SNK Boss combines NintendoHard with TheComputerIsACheatingBastard and takes them UpToEleven. Powers may include:

* [[RulesAreForHumans Complete Disregard for System Limitations]]: While you may have to switch between high and low blocking, the SNK Boss needs to only block one way. Where you have to crouch or be in a specific position to perform certain moves, the boss does not. Where you have a regular super meter, the boss either fills its super meter much faster than yours, has a regenerating super meter, or in extreme cases has no visible one, meaning it can use as many supers as it wants whenever it wants.
* Blatantly Overpowered Offense: A trademark of the SNK Boss. Where you have fireballs, the boss has full-screen lasers that come out faster than you can blink, deal damage equivalent to 1/4 of a health bar, and snuff out all other projectiles. If you have an invincible uppercut, the boss likely has one where he surrounds himself with lightning for more hits and damage, and can cancel out fireballs. These types of bosses sometimes, but not always, have a [[ThatOneAttack maximum level super]] where they show off their superiority by utterly annihilating you regardless of your current health, usually combined with FingerpokeOfDoom for maximum insult.
* Blatantly Overpowered Defense: They may be the gameplay equivalent of TheJuggernaut, being able to [[NoSell continue their attack startup against your own hits]] or possess features like a larger health bar, reduced block-stun, inability to get dizzied (or a shorter dizzy period), or they can interrupt your combos with its attacks or escape from a juggle via some sort of recovery/teleport.

If the boss is playable, [[DefeatMeansPlayable such as upon defeat]], [[RedemptionDemotion they are significantly weaker and more balanced for actual play]]. A non-weakened playable SNK Boss is most certainly banned in any competitive tournaments where it would be a GameBreaker for one human player to use on another.

In some fighting games, the FinalBoss is a unique opponent in both design ''and'' ability (such as a [[{{Kaiju}} 30-foot]] EldritchAbomination) that is PurposelyOverpowered and only appears in single-player/non-competitive game modes; it's slightly more sensible that such a boss would have those high-powered attacks rather than a human-sized villain. [[BraggingRightsReward It can also feel pretty good for a player]] who manages to use an otherwise-mortal badass to [[DidYouJustPunchOutCthulhu beat the crap out of a godlike monster]].

These bosses originate from the days of arcade machines, where the high difficulty level was used to separate players from their pocket change while attempting to register their initials in the top spot of the machine's High Scores table. In console games, side effects of continued exposure to an SNK Boss may include [[RageQuit broken controllers]] and increased sales of VideoGame/{{GameShark}}s to "cheat back". Occasionally, these bosses may have an AchillesHeel that utilizes [[OutsideTheBoxTactic special moves from characters that usually have limited utility]]. It is unknown whether these are intentional or not.

Is there an upside to this? GameplayAndStoryIntegration. Given that characters of this kind are frequently talked up in the story as being terrifying and powerful, if they fall into this category then at least the player doesn't feel like [[CharacterShilling all the hype and drama was over nothing.]]

[[TropeNamer Takes its name]] from the company Creator/{{SNK}}, which seems to ''love'' making bosses like this and having each successive one [[SerialEscalation top the last]]. This is also a case of FollowTheLeader, especially with [[VideoGame/GuiltyGear Arc]] [[VideoGame/BlazBlue System]] [[VideoGame/Persona4Arena Works]].

Subtrope of FakeDifficulty and TheComputerIsACheatingBastard. See also PerfectPlayAI, whose difficulty arises less from outright cheating, and more from a flawless battle strategy. Do not confuse with ThatOneBoss, which describes a difficult boss as declared by a majority and technically fights on a much fairer level when compared to this trope.

While this trope primarily applies to fighting games, it ''can'' also apply to non-fighting games, provided they are similarly competitive and have similar ways of ensuring CompetitiveBalance. A {{Racing game}}, for example, may have a champion with an absurdly tricked out car and a knowledge of the track that combine to give it an advantage no mater which vehicle/racer you choose. If a game is non-competitive, such as platformers, RPG's, etc., bosses are not considered SNK bosses no matter how unfair they are. There are [[EasyLevelsHardBosses other]] [[ThatOneBoss tropes]] for that.

See also EasyLevelsHardBosses. Don't be surprised if they can only be toppled via NotTheIntendedUse, chiefly {{AI Breaker}}s.

Has nothing to do with ''[[Manga/AttackOnTitan Shingeki no Kyojin]]''. Not even ''Humanity in Chains''.

* SNKBoss/SNKPlaymore
* SNKBoss/{{Capcom}}
* SNKBoss/ArcSystemWorks
* SNKBoss/{{Namco}}
* [[SNKBoss/{{Midway}} Midway/Netherrealm Studios]]
* SNKBoss/OtherFightingGames
* SNKBoss/OtherGames