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[[caption-width-right:350:They're [[LargeAndInCharge big]], they're [[BigBad bad]], they're ready to throw down. [[DareToBeBadass Are you]]? [[note]]Clockwise from top-left: [[VideoGame/SuperMarioBros1 Bowser]], [[VideoGame/FinalFantasyVII Sephiroth]], [[VideoGame/TheLegendOfZeldaOcarinaOfTime Ganon]], [[VideoGame/SuperMetroid Mother Brain]], [[VideoGame/CastlevaniaDraculaX Dracula]], [[VideoGame/SonicTheHedgehog2 Robotnik]].[[/note]]]]

->''"I am End Boss, the greatest of all the Sammer Guys. It is my duty as End Boss to laugh at your feeble party and proclaim your doom. Shall we begin, challenger?'' '''''HAH! YOU ARE PATHETIC! PREPARE TO BE CRUSHED AS THE UNIVERSE WITHERS!'''''''''"
-->-- '''End Boss''', ''VideoGame/SuperPaperMario'' [[note]]Actually, he's a BonusBoss, but he cannot be fought before the game's actual final boss. He's a pretty funny parody of a final Boss, though.[[/note]]

A SubTrope of BossBattle, the Final Boss is the last major challenge in many video games. They will usually be much harder to defeat than all of the enemies the player has faced thus far (as always, [[AnticlimaxBoss there are exceptions]]), and will be prone to making a suitably grand entrance for their stature. These may also be known as "the Boss of the Game".

Usually resides within TheVeryDefinitelyFinalDungeon, and with rare exception is the BigBad or GreaterScopeVillain of the game's general storyline (in games with a NonActionBigBad, the final boss tends to be TheDragon) -- in the cases where this is averted, you may find yourself facing a final challenge against someone for the sake of the challenge rather than because they Must Be Stopped. When they're evil, they usually have [[OneWingedAngel multiple forms]] that [[SequentialBoss must all be defeated back-to-back]] or even [[MarathonBoss taking forever]] to complete the game. If the game uses the same boss music throughout the game (a lot more common in earlier games), expect this boss to get its own theme. It is sometimes a LoadBearingBoss, so even after defeating it, there will be one final challenge to escape its CollapsingLair (or part of the ending cutscene will depict the heroes escaping the lair, if you don't get to play that part yourself).

See GiantSpaceFleaFromNowhere when the Final Boss seems to have ''nothing'' to do with the events leading up to it. If they show up earlier in the game just to beat up the heroes, it's a FinalBossPreview. If the Final Boss is considered the last "normal" enemy, but you did so well that another boss appears out of nowhere, the replacement is called the TrueFinalBoss instead. May make future appearances if PromotedToPlayable.

Being a near-ubiquitous trope in video games, a list of specific examples is unnecessary - almost every game with {{Boss Battle}}s has one that takes place just before the ending of the game, and that's the Final Boss. Note that the Final Boss isn't necessarily the hardest; even if it's not a [[AnticlimaxBoss pushover]], there may be a [[ThatOneBoss really hard boss]] earlier on, and {{Bonus Boss}}es are usually around to give {{Challenge Gamer}}s a tougher fight than is needed to finish the game. More interesting forms of this trope are under different pages. Also, the final boss need not be the very last thing you fight. Sometimes, a post-climax finisher fight occurs; less difficult, or smaller stakes than before, meant to tie up loose ends; we like to call that a PostFinalBoss. Or, as mentioned above, a TrueFinalBoss shows up.

We may also use this to refer to the final enemy faced by the protagonist(s) in other pieces of fiction.

Also see WizardMode, the {{Pinball}} equivalent.