Master Hand (マスターハンド, Master Hand) is a hand-like entity who acts as the main recurring boss in the Super Smash Bros. universe. He appears at Final Destination as the final boss of the 1P Game in Super Smash Bros. and of Classic Mode in Super Smash Bros. Melee, Super Smash Bros. Brawl, Super Smash Bros. 4, and some fighters' paths in Super Smash Bros. Ultimate. He also plays a large role in Adventure Mode: The Subspace Emissary and Adventure Mode: World of Light. Due to his role as a boss, Master Hand is often unplayable barring hacks, though a glitch that allows the player to play as him exists in Super Smash Bros. Melee. The player must bring his HP down to 0 to defeat him. Master Hand's left hand counterpart, Crazy Hand, was introduced in Melee.
Despite appearing in all five games of the series, considerable mystery surrounds the character, due to a lack of sufficient official explanations. However, he is known as the creator of the Super Smash Bros. universe, and in Brawl as the master of the World of Trophies. His trophy info in Brawl implies that he does not use his full power against the fighters, and merely toys with them for his own enjoyment. In Super Smash Bros 4, Master Hand is shown to have some connection to Master Core, with the "Swarm" that Master Core comprises appearing from within Master Hand after he has taken enough damage. This link between the two has yet to be elaborated upon in the Smash universe.
Master Hand is playable in Super Smash Bros. Ultimate in a special event battle found in World of Light. Elsewhere and in other games, he is only playable via a glitch in Super Smash Bros. Melee or through hacking.
Master Hand is usually fought on Final Destination, although in Super Smash Bros. Ultimate. Donkey Kong's Classic Mode instead uses the Ω form of New Donk City Hall, and Joker's Classic Mode uses the Ω form of Mementos.
Although he is original to the Super Smash Bros. series, some of Master Hand's attacks are very similar to those of Wham Bam Rock in Kirby Super Star (Kirby's Fun Pak in the PAL regions).
Wham Bam Rock attacks using its hand, which is made of rocks. Wham Bam Rock and Master Hand share a move where they point their index finger at the player like a gun; however, Wham Bam Rock proceeds to make rocks fall, while Master Hand shoots out bullets. Both Wham Bam Rock and Master Hand perform a move that involves "walking" across the stage to flick the player. Both will also try to grab on to the player and crush them.
Main article: Master Hand (SSB)
He is also seen in the opening movie. He places plush dolls of two characters on a table and positions objects around them. After counting down from three, he snaps his fingers, transforming the objects and table into a stage resembling Peach's Castle, and bringing both of the plush dolls to life.
Main article: Master Hand (SSBM)
Super Smash Bros. Melee sees Master Hand reprising his role as a boss in Classic Mode. He is fought in the final battle on Final Destination. Defeating Master Hand once again causes the screen to fade to white as he explodes into the background.
Master Hand received a multitude of alterations to his overall fighting style in Melee. He faces only one direction, and his HP and power change with the difficulty. The highest levels of difficulty give him attacks with OHKO potential. Aesthetically, he no longer has a cuff, instead having a wrist that fades into nothingness.
The game also introduced Crazy Hand, Master Hand's left-handed partner. When the two are on the field at the same time, they can perform powerful combination attacks. Crazy Hand appears when set conditions are met. The duo also appear in Event 50: Final Destination Match as boss characters.
Main article: Master Hand (SSBB)
Master Hand reprises his role as the final boss of Classic Mode in Super Smash Bros. Brawl, and once again is fought on Final Destination. His attacks are very similar to that of his Melee form with some changes. The amount of HP he has is still dependent on the set difficulty. Crazy Hand also returns in Classic Mode if certain conditions are met.
Master Hand also appears in The Subspace Emissary, as the one giving orders to Ganondorf, Bowser and Wario. Soon after a Subspace Bomb is used on King Dedede's castle, Ganondorf receives new orders from Master Hand via a video screen.
However, when all of the characters arrive in Subspace, Ganondorf reports to Master Hand after betraying Bowser. When Master Hand reveals himself, however, Ganondorf sees that he has actually been under the control of a powerful being called Tabuu. Tabuu had enslaved Master Hand using chains of light knowing that he could control and use him for recruiting fighters to aid him in his goals.
Ganondorf defiantly attempts to attack Tabuu but is easily knocked back, though his fall breaks the chains of light that Tabuu used to control Master Hand with, thus freeing him. Master Hand subsequently falls into the ground, bleeding from where he was enchained. Master Hand too attempts to strike Tabuu but is beaten with little effort, collapsing once again into the ground and lying motionless in defeat. Whatever happens to Master Hand afterwards is never revealed.
Main article: Master Hand (SSB4)
Master Hand is once again the final boss of Classic Mode in Super Smash Bros. 4. At higher intensities he is fought along with Crazy Hand, and after taking a certain amount of damage, he writhes about in the air before releasing a dark mass named Master Core. In Super Smash Bros. for Wii U, he stars in his own mode named Master Orders.
Unlike the previous games, Master Hand and Crazy Hand share a HP meter. Each of them have new attacks they perform both individually and in conjunction with each other, such as the two tossing energy balls to one another and Crazy Hand opening a rift that sucks in characters that get caught inside.
Main article: Master Hand (SSBU)
He also appears in Adventure Mode: World of Light. In the introductory cinematic, an army of many Master Hands is seen approaching the fighters alongside Galeem. The Master Hands unravel to reveal blue glowing energy-like forms within, which are then absorbed by Galeem before he unleashes beams of light that consume the fighters. Master Hand will obstruct the player's path several times in the Light Realm and must be fought before reaching Galeem. Following Galeem's defeat, Dharkon appears, sending his army of Crazy Hands to destroy Master Hands, which instead of exploding in blue energy, they burst in yellow.
Master Hand can be fought twice in the Final Battle Realm, a second time which the actual Master Hand will be freed from Galeem's control, suggesting that at some point Master Hand, just like the fighters, must have been copied too. Upon being freed, Master Hand performs a gesture as if he was looking back and forth, implying he was unaware of what happened up until that point. When both Master and Crazy Hand are freed, they create a giant rift via their Static Discharge joint technique, through which Master Hand enters to defeat 50 false characters as a temporary playable character (the only time in the series that Master Hand is playable without hacking). Succeeding, Master Hand flies out of the crack and the Final Battle Realm changes scenery, after which the message appears: "You've conquered both light and darkness!"
In the True Ending, armies of Master Hands and Crazy Hands disintegrate following Galeem and Dharkon's ultimate defeat.
Master Hand appears in the Game Boy Advance game Kirby & The Amazing Mirror as a mini-boss. Inhaling him will give Kirby the Smash ability, an ability that gives Kirby some of his moves from Super Smash Bros. Melee (though in a slightly altered state). Master Hand and Crazy Hand are also the bosses of the Candy Constellation stage.
An enemy named Uja appears in some levels of Kirby Squeak Squad; it appears to be a swarm of insects taking a form that closely resembles Master Hand's sprite in Amazing Mirror. However, it is made of small, black particles similar to Master Core.
In Melee, the Master Hand glitch, a particular application of the Name Entry glitch, allows a player to control Master Hand. Aside from this, the only other methods of controlling Master Hand are by hacking with a cheating device such as GameShark or Action Replay. Several rumors exist of being able to control Master Hand in other games, particularly the original Super Smash Bros., all of which are false. In Ultimate however, he is now playable in the penultimate stage of World of Light.