The Galaxia is Meta Knight's trademark sword. The name Galaxia first appeared in the Kirby anime. Since then, many games have shown Meta Knight's sword to resemble the one from the anime, indicating that it is the same sword. It was finally proven that Galaxia is the name of his sword in the games in Kirby's Epic Yarn, where there is an item called the Galaxia Sword on the Halberd.
The Galaxia's overall shape is flame-like, with four or six spiked prongs on its sides (depending on how it is portrayed in official artwork and games). The blade itself is depicted as being colored gold with a red, ruby-like hilt.
Throughout the games, Meta Knight's sword is portrayed inconsistently, as it oftentimes appears in sprites as a generic golden sword with a red or blue-green (in the case of Master's official artwork) hilt, and official artwork for some games also sometimes portrays the Galaxia with its appearance from the anime. Interestingly, official depictions of the Galaxia are also inconsistent, as it is depicted with a different number of spikes (for example, its Nightmare in Dream Land/Amazing Mirror artwork depicts three spikes, while Star Allies artwork shows two).
The Galaxia sword is the main weapon of the masked swordsman, Meta Knight, used for his occasional battles with Kirby and against other enemies. It has shown to be able to send out crescent-shaped shots with this sword as well as utilizing it for more conventional uses, such as slashing and cutting.
The Galaxia is also capable of using elemental powers. In Kirby: Squeak Squad, the Galaxia can create an electrical charge around its owner and unleash fiery shots, and in Kirby Star Allies, it can also be imbued with different elemental powers from other player attacks. As shown in Kirby: Planet Robobot's Meta Knightmare Returns, the Galaxia is also capable of destroying large objects, especially objects and enemies that can be destroyed or defeated using the Robobot Armor.
Kirby's Adventure & Kirby: Nightmare in Dream Land
In Kirby's Adventure, Meta Knight fights with a generic gold-like sword as the boss of Orange Ocean. In artwork of Meta Knight for the remake Kirby: Nightmare in Dream Land, this particular sword has been retconned to be the Galaxia in official artwork. Initially, the sword's appearance is not named as such.
Kirby Super Star & Kirby Super Star Ultra
Kirby Super Star features Meta Knight using his sword to battle Kirby in the game Revenge of Meta Knight. In the remake Kirby Super Star Ultra, it is retconned by promotional artwork and the title screen for Meta Knightmare Ultra that the sword Meta Knight uses in the events of Super Star is the Galaxia.
Kirby and the Amazing Mirror
In Kirby and the Amazing Mirror, Meta Knight's sword is known as Master, which is a Last Battle Ability that is used by Kirby against Dark Mind, the true mastermind of the game. It is strongly implied that this sword is the Galaxia, especially through the pause screen for Master, although it is not explicitly named as such and uses a different shape, possibly due to sprite style limitations.
Kirby Air Ride
The Galaxia appears in Kirby Air Ride. This is the first game to portray the Galaxia in-game using its proper appearance from the anime. It is wielded by Meta Knight and can be used like the Sword ability.
Kirby: Squeak Squad
In promotional artwork, it is confirmed that the Galaxia is used by Meta Knight in his appearance in Kirby: Squeak Squad. Meta Knight fights much like his previous appearances with it, and the Galaxia is now capable of using elemental powers such as creating an electrical charge around the masked swordsman and unleashing crescent shots of fire.
Kirby's (Extra) Epic Yarn
For the first time in the Kirby series, the Galaxia appears with its proper name as a furniture item in Kirby's Epic Yarn and its remake. The furniture piece, named the Galaxia Sword, depicts the Galaxia rested upon a wooden stand. It can be obtained early in the Battleship Halberd stage.
A yarn replica of the Galaxia Sword appears in the patch animation for the Battleship Halberd stage. It swipes across the clouds to clear them for the Halberd to come into view and for Kirby to access the stage.
Kirby Mass Attack
In Kirby Mass Attack, the Galaxia appears as a secret boss in Chapter 4 of the sub-game Kirby Quest. If the player does not miss a single attack for the first 8 battles of the chapter (and if they have beaten the chapter before), Meta Knight is replaced with an oversized Galaxia as the boss for stage 39. The Galaxia has 2500 health and, once defeated, grants Kirby the ability to perform an Excellent attack in which he wields the sword. The attack deals 9999 damage and is thus capable of instantly defeating any enemy or boss in Kirby Quest.
Missing any attack against the Galaxia would cause it to disappear, making Kirby lose his opportunity.
Kirby's Return to Dream Land
Kirby: Planet Robobot
When Meta Knight was first mechanized into the cyborg warrior Mecha Knight in Kirby: Planet Robobot, his Galaxia is replaced with a more powerful laser variant. Later on, in the fight against Star Dream, Meta Knight inserts the Galaxia sword into a slot on the Halberd, and pulls it like a lever to release Kirby and the Robobot Armor to drill through Star Dream's defenses for one last time.
In Meta Knightmare Returns, Meta Knight uses the Galaxia on his adventures, much like his previous playable appearances. Notably, the Galaxia in this appearance is also able to destroy objects and enemies that could be normally destroyed with the Robobot Armor. Meta Knight can also perform Galaxia Darkness, his Final Smash from Super Smash Bros Brawl and Super Smash Bros. for Nintendo 3DS / Wii U.
Kirby Star Allies
In Kirby Star Allies, the Galaxia, as used by Meta Knight the Dream Friend, can also be infused with different elemental powers. These elemental powers also enhance Meta Knight's Shuttle Loop with different effects.
Kirby Fighters 2
In Kirby Fighters 2's Story Mode: The Destined Rivals, Meta Knight uses the Galaxia when attacking alongside King Dedede in their tag-team duo fight. When Meta Knight is unlocked as a playable fighter after completing Chapter 4, he uses the Galaxia much like he did in his previous playable appearances.
Super Smash Bros. series
The first appearance of the Galaxia in its current design in any video game is in the trophy for Meta Knight in Super Smash Bros. Melee, where it adopts its appearance from the anime. In all of his playable appearances in the Super Smash Bros. series, starting with Super Smash Bros. Brawl, Meta Knight fights with the Galaxia in his moveset, which is named as such for the first time in a video game.
In Kirby: Right Back at Ya!
|My name is Galaxia. Only the most powerful of knights may wield my ancient magic. Meta Knight is the chosen one. Your mother Garlude knew well this truth. In sacrificing her life, Garlude made the ultimate sacrifice.|
— Galaxia addressing Sirica in Crusade for the Blade
In the anime series Kirby: Right Back at Ya!, the Galaxia is Meta Knight's signature sword, and an ancient relic of great power. The Galaxia appears prominently in the episodes Hour of the WolfWrath and Crusade for the Blade. In the latter episode, the Galaxia is told by Kabu to have been forged thousands of years ago by Photron - the king of the Fire People - and imbued with a life of its own, but it was later stolen by the monster Kirisakin in order to safeguard it for eNeMeE. In order to recover this sword, the Star Warriors Meta Knight and Garlude (the mother of Sirica) fought Kirisakin to reclaim it, but Garlude ended up having to sacrifice her own life to toss the sword to Meta Knight, who among them was the only one who could wield it.
The Galaxia is described as being so powerful that it could decide the fate of the universe, so Meta Knight takes extra care to ensure it does not end up in the hands of Night Mare Enterprises. The sword has the power to reject those it deems unworthy who try to wield it by shocking them with electricity. Though Meta Knight is described by the Galaxia itself as the chosen one, it is clear that its true potential can only be unlocked when it is wielded by Kirby. Using this sword as a proper Copy Ability, Kirby gains the power to toss devastating Sword Beam attacks which can cleave in two even N.M.E.'s most formidable monsters.
- Dark Meta Knight wields an iron sword with a blue hilt that resembles the Galaxia, as shown in official artwork for Kirby and the Amazing Mirror and his 3D appearances in Kirby: Triple Deluxe and Kirby Star Allies.
- Some final bosses use sword attacks that resemble that of the Galaxia sword, like with Magolor Soul's Ultra Sword attack and Void Termina's Lonely Blizzard/Sizzle/Zap.
- The Galaxia appears as part of the logo for the Kirby Quest sub-game in Kirby Mass Attack.