Boss

Not to be confused with the smasher Boss.

A boss is a non-playable character that appears as a strong opponent in specific circumstances in one-player modes. Bosses in the Super Smash Bros. series are always significantly larger than playable characters, and are usually immune to knockback and flinching, meaning that instead of defeating them through a KO off the stage, they must instead be defeated by reducing their HP to zero.

Fighting bosses is usually an entirely different matter than normal fights. Compared to regular playable characters, bosses usually have fewer attacks available. These attacks tend to be telegraphed with a long startup and endlag, making them more avoidable; on the other hand, they usually deal high damage and knockback should they connect. Bosses' immunity to knockback also means that the player's moveset will have to be used differently - for example, grabs will almost always be useless, and moves of high knockback but low damage are no longer effective. On the other hand, bosses' large size often means that they have difficulty dodging attacks, and so powerful moves with a long startup such as Falcon Punch can be more effective than normal.

In the first two installments of the series, boss characters were usable in normal play through hacks or the Debug menu. Starting from Brawl, the character IDs for the bosses have been removed, meaning they are unplayable even with hacks, although certain other hacks allow the moves they perform to be controlled.

Master Hand

Master Hand’s official art in Brawl

The first "true" boss of the Smash Bros. series, Master Hand is the master of ceremonies for the Smash Bros. series. In the first Super Smash Bros., according to the intro movie, he is meant to represent the hand of a child playing with his toys and staging fights between his favorite Nintendo characters, who are represented by dolls. He appears at the end of the 1P Game as the final boss. Upon being defeated, Master Hand lets out a deep roar that resembles laughter, and flies off, writhing and exploding, into the distance.

Master Hand reappears in Super Smash Bros. Melee and Super Smash Bros. Brawl, reprising his role as the final boss in the 1-Player mode, now known as Classic Mode. Master Hand is fought on Final Destination, which is very similar to his original stage, Master Hand's Residence. He fights essentially the same way as he did in the original game, but with a few new attacks. Upon being defeated, he leaves the stage in the same way that he did in the original game. In Melee, he can also be fought in Event 50: Final Destination Match, where the player faces off against him and Crazy Hand at the same time. Due to a glitch in this game only, Master Hand can be used as a playable character in certain settings. In Brawl, he also has an important plot role in The Subspace Emissary and appears in Boss Battles Mode as one of the game's ten bosses.

In Super Smash Bros. 4, Master Hand continues to be fought at the end of Classic Mode on Final Destination and has new attacks; however, on high enough difficulty settings he will now transform into Master Core near the beginning of the fight, and the player will defeat Master Core in Master Hand's place. In Super Smash Bros. for Wii U, Master Hand has his own mode named after him, Master Orders.

Master Hand also appears in the Game Boy Advance game, Kirby and the Amazing Mirror, in which he appears as a miniboss in multiple areas. Upon being defeated, Kirby can inhale him, like other minibosses, and gains the Smash ability, which is based on Kirby’s moveset in Melee. Master Hand, alongside Crazy Hand, also appears as the boss of the Candy Constellation. This is Crazy Hand’s only appearance in the game. The two, like in Melee, have attacks that they use in conjunction with each other. In this battle, neither can be inhaled; they both explode upon defeat.

Crazy Hand

Crazy Hand’s official art in Brawl

The strange, twisted brother of Master Hand, Crazy Hand is meant to represent the feeling of destroying one’s own creations, as opposed to Master Hand, who is meant to represent the opposite. He was introduced in Super Smash Bros. Melee as a secret boss who fights alongside Master Hand under specific conditions (when Classic Mode is cleared on Normal difficulty or higher in under 15 minutes, Crazy Hand will join Master Hand when Master Hand has half of his health left.) As noted above, Crazy Hand also appears in Event 50, where he and Master Hand are fought together on Final Destination with 300 HP each.

When compared to Master Hand, Crazy Hand can be considered to be much more erratic (i.e. "crazy"). His idle pose is a strange, erratic movement, and he has multiple strange attacks that are unique to him. Many of his attacks also have side effects compared to Master Hand, such as freezing and flowering. When Master Hand and Crazy Hand are fought together, they have several moves that they use in conjunction with each other, such as a high-powered clapping attack.

Crazy Hand reappears in Brawl at the end of Classic Mode under similar conditions as in Melee, where the player must beat the mode on Hard difficulty or higher in under 9 minutes. Instead of appearing halfway through, Master Hand and Crazy Hand will appear simultaneously at the beginning of the battle. As with Master Hand, Crazy Hand also appears as a separate boss in Brawl's "Boss Battles" mode, though he does not make any appearances in The Subspace Emissary.

In Smash 4, Crazy Hand continues to be fought alongside Master Hand at the end of Classic Mode on Final Destination, and the two will appear together at the beginning of the battle; however, the conditions are now different. In Super Smash Bros. for Nintendo 3DS, the player gains the choice to fight Crazy Hand when on Intensity 3.0 or higher in return for more rewards; on Intensity 8.0 or higher, the player has no choice but to fight Crazy Hand. In Super Smash Bros. for Wii U, the player will always fight Crazy Hand as long as the Intensity is 3.0 or higher. However, in both games, if Crazy Hand (and Master Hand) are fought on Intensity 5.1 or higher, Master Core will appear in their place soon after the beginning of the battle.

Like Master Hand, Crazy Hand has his own mode named after him in Super Smash Bros. for Wii U: Crazy Orders.

Giga Bowser

Giga Bowser's Trophy in Melee.

Giga Bowser (Japanese name Giga Koopa) is the secret final boss of Adventure Mode in Melee. As his name suggests, he is a large, powered-up version of Bowser. Unlike other bosses, Giga Bowser is treated as a character - he has a damage percentage, takes knockback, has a full moveset, and can use items. With a manic expression, a darker, more malevolent color scheme, and a hulking size, Giga Bowser is surely a boss to be remembered.

Upon clearing Adventure Mode in fewer than 18 minutes on Normal difficulty (or higher), Bowser’s trophy, previously thrown into a mysterious abyss below Final Destination, rises back up onto the stage, and is struck by a strange lightning, transforming it into Giga Bowser. During the battle with Giga Bowser, a distorted version of the Final Destination theme that cannot be found in the Sound Test plays. Many of Giga Bowser’s attacks are powered up versions of Bowser’s. His down smash attack has a freezing effect, his forward smash has explosive properties, and his forward tilt has darkness effects. Unlike Bowser's, Giga Bowser's Fire Breath attack never diminishes.

Along with Mewtwo and Ganondorf, Giga Bowser appears in Event 51: The Showdown. The three team up against the player, who must defeat them to complete the event.

Giga Bowser also makes a semi-playable appearance in Brawl as Bowser's Final Smash, Giga Bowser. When used, Bowser temporarily transforms into Giga Bowser, who is essentially unchanged from Melee, keeping the elemental abilities of his attacks, as well as his massive size. Also, Giga Bowser does not flinch in Brawl. His down special, Giga Bowser Bomb, had a wind effect in Melee; this has been lost in Brawl.

Petey Piranha

Petey Piranha's official art.

Petey Piranha (known as Boss Pakkun in Japan) is the first revealed boss character in Brawl, and the first “true” boss to come from another series of games, as opposed to being unique to Smash. He appears as a boss in the Subspace Emissary, holding cages that contain Zelda and Peach. He uses both these cages, as well as his own abilities, to attack Kirby. The cage that Kirby attacks will break when Petey is defeated and explodes and the princess contained therein will be freed; The other princess is turned into a trophy, and subsequently taken by Wario. Petey Piranha has previously appeared as a playable character in Mario Kart: Double Dash and a boss in Super Mario Sunshine.

Rayquaza

Rayquaza's official art.

Rayquaza is the first Pokémon creature to be a boss in the Subspace Emissary. It first appears in the jungle after Diddy Kong goes to investigate a crashed Arwing. It comes out of the water, destroys the Arwing with an energy ball, and then kidnaps Diddy. As it goes back in the water, Fox comes out and attacks the aggressive beast, causing it to lose its grip on Diddy Kong. The Pokémon attacks Fox with energy, but Fox reflects the attack back at the monstrous dragon, sending it tumbling back into the water. After this, Diddy Kong and Fox fight it. Its attacks are loosely based off the Pokémon games, and it has an exceedingly large amount of resistances.

Porky Minch

Porky Minch in the Subspace Emissary.

As one of the bosses of the Subspace Emissary and a high-ranked member of the Subspace Army, Porky Minch sends Primids to divert Lucas and sends in his giant statue, the Pig King Statue, which soon hunts Lucas down. This statue is indestructible, so Lucas has no choice but to run; the giant statue destroys giant containers, barrels, enemies, and even metallic buildings. Lucas finally comes to a giant marsh which seems to save him — the statue sinks, but it soon respawns.

Lucas then stumbles, and just as the giant statue is about to crush him, someone uses a PK Thunder, which causes the statue to tip over, and Ness appears. The statue once again recovers and flies into the air, this time to crush Ness. However, he uses a PK Flash and the statue explodes, revealing Porky Minch himself inside (in his bed-mecha from Mother 3). A battle then ensues. He attacks by running around and by using a variety of lasers, but he is eventually taken down. Porky is brought back by Tabuu to distract the heroes in The Great Maze. He appears as an antagonist in EarthBound and Mother 3.

Galleom

Galleom's official art.

Galleom is a large transforming robot found in the desert by Marth, Ike, and Meta Knight. Galleom's initial form is a large armored tank equipped with ramming spikes and missiles, but when confronted by the three swordsmen, it transformed into an immense purple robot. In this form, he attacks with his large fists, missiles, and tries to crush the protagonists with his sheer bulk. The mechanoid is finally defeated, but not destroyed. He leaps off a cliff and falls through the ground into a tunnel system. There, he confronts Lucas and the Pokémon Trainer. After he is defeated a second time, he grabs the two companions and blasts into the sky, revealing a Subspace Bomb concealed in his head. Lucas uses PK Thunder to separate Galleom's arm from his body, releasing the two boys, who are then rescued by Meta Knight. Galleom is finally destroyed by the detonation of the Subspace Bomb. He is later brought back by Tabuu to confront the heroes yet again in The Great Maze.

Ridley/Meta Ridley

Wolf fighting Ridley.

Ridley is the boss of the Subspace Emissary in Brawl who fights Samus and Pikachu after scratching Samus's power suit against the wall. Pikachu frees Samus with Thunder. The pair then fights Ridley, eventually defeating him.

Meta Ridley attacking the Falcon Flyer.

Ridley reappears in his cybernetic form known as Meta Ridley and chases R.O.B., Olimar, Pikachu, Samus, Captain Falcon, Donkey Kong, and Diddy Kong in the Falcon Flyer. Unlike other boss battles, there is a 2-minute time limit. They battle him atop the Flyer, defeating him and sending his body crashing back into the factory's vents, just as the whole island is destroyed.

Both Ridley forms are reincarnated by Tabuu as enemies in The Great Maze.

Ridley returns in Super Smash Bros. for Wii U as the stage boss of Pyrosphere. He can transform into Meta Ridley at certain points during the battle.

Duon

Duon's official art.

Duon is an immense, double-sided robot fought on the Battleship Halberd. Duon is created when Snake, Lucario, and Meta Knight destroy the Mr. Game & Watch clones that are maintaining the bridge. As aforementioned, Duon has two different sides: one is a bright blue and specializes at melee attacks and the other is pink and possesses long-range attacks. The blue side has two drill-like appendages and a large blade on its head. It can also fire explosive mines from its shoulders. The pink side can fire several energy blasts from its arm cannons in quick succession. It also fires three blue energy blasts from its head cannon and launches missiles from its shoulders. The beast can also leap into the air to try to crush the heroes and can spin around to cause damage. Upon its defeat, Duon melts into a puddle of shadow bugs and reveals the trophy of Mr. Game and Watch. Duon will attempt to stop the heroes again in The Great Maze.

Tabuu

One of Tabuu's trophies in Brawl.

Tabuu is the final boss of the Subspace Emissary in Super Smash Bros. Brawl. He has many devastating attacks, most dangerously his Off Waves which can instantly KO, but most of his attacks have a large amount of start-up lag. While playing in the Subspace Emissary, six characters are chosen to fight Tabuu.

Master Core

Master Core's official artwork for Super Smash Bros. for Nintendo 3DS

Introduced in Super Smash Bros. for Nintendo 3DS, Master Core is a transformation of Master and Crazy Hand, and appears as a secret final boss in Classic Mode only when the Intensity is set to 5.1 or higher, after Master Hand and Crazy Hand are damaged enough. It possesses several forms that are fought in order: the humanoid-like Master Giant, the scorpion-like Master Beast, the swords-like Master Edges, a shadow duplicate of the player character named Master Shadow, a massive sub-stage of its own called the Master Fortress (exclusive to the Wii U version), and finally the Master Core itself. What forms are fought depend on the Intensity: at Intensity 7.5-9.0, every form is fought (with the exception of Master Fortress, which requires 8.0-9.0 in the Wii U version), at 6.0-7.4 the battle starts at Master Beast, and at 5.1-5.9 it starts at Master Edges. After all of the other forms are defeated, the true Master Core appears: it is normally completely defenseless, but if not defeated quickly enough, it will unleash several waves, each powerful enough to cause a one-hit KO.

Minor bosses

Since the first Super Smash Bros., games in the series have also included "minor bosses", or opponents that are generally unplayable (at least directly) and that are tougher to defeat than usual playable characters, but do not meet the criteria for "true" boss status. Often these are simply otherwise playable characters who have permanently gained the effect of a temporary item.

Characters that can qualify as minor bosses include:

• Giant Donkey Kong
• Metal Mario
• Giant Kirby
• Giant Bowser
• False characters in The Subspace Emissary

Stage bosses

Stage bosses are a type of boss introduced in Super Smash Bros. 4. Four different bosses appear at certain times on some stages, hindering the battle until they are defeated.

Yellow Devil is the only boss available in both versions, appearing on Wily Castle, and was also the first stage boss confirmed. He is invulnerable in every area except his eye, and can teleport between sides of the stage. When Yellow Devil is defeated, he explodes; whoever landed the final hit is not damaged by this explosion, and gets a point for anyone KO'd by the explosion.

The Dark Emperor is the only 3DS version exclusive stage boss, appearing on Find Mii. He first appears in the foreground, and can send out shockwaves that give bonuses to fighter. Eventually he flies into the foreground where he can be attacked; once attacked a certain amount, he will fly back into the foreground. The player who lands the final hit gets a bonus.

Ridley was teased at the end of the April 2014 Smash Direct, and later confirmed as the stage boss of Pyrosphere in the October 2014 50-Fact Extravaganza. Unlike the other stage bosses, if he is damaged a certain amount by one player, he will fight on their side. If he is KO'd, the player who KO'd him gets an extra point; even the player Ridley is assisting can get a point from this. Once damaged enough, Ridley will fly to one of the two edges of the stage and absorb purple energy, turning into Meta Ridley, who is more powerful and has slightly different attacks.

Metal Face was also teased at the end of Shulk's reveal trailer as the stage boss of Gaur Plain, but was absent in the 3DS version- however, the October 2014 50-Fact Extravaganza confirmed that he would be exclusive to the Wii U version. He attacks from the background and will eventually fly into the foreground, where he can be KO'd.

By hacking into the game, it is shown that there may have been a Dr. Mario stage that went unused and would have had a Virus as a boss.

Trivia

• When a boss's stamina is reduced to half, they will get stronger and attack in a different way. Examples include:
  • Master Hand's gun will shoot 3 times (if he is below 100 HP in Smash 64 and Melee).
  • Petey Piranha will jump twice and swing cages more often.
  • Duon will perform its dash attack twice.
  • Ridley will perform his tail attack across the stage twice.
  • Meta Ridley will perform a stomp that pushes the Falcon Flyer down below the lower blast line and launch a powerful fireball more often.
  • Most of Rayquaza's attacks will be used three times in a row.
• In Brawl, whenever any boss is defeated in any mode, the same pattern of vertical dark green lines will appear over the screen.