History ThatOneBoss / Kirby

** For how strong Meta Knight is, '''Phantom Meta Knight''' takes it up a notch, firing more sword beams, including when he leaps away from your attacks, attacking and defending faster, using the psychic rock attack multiple times in a row, and being even stricter with parrying -- that is, if you have Sword. To make matters worse, his fight is exclusive to The Ultimate Cup Z, meaning you'll already be hurting from the previous fights you've had to endure.

** For how strong Meta Knight is, '''Phantom Meta Knight''' takes it up a notch, firing more sword beams, including when he leaps away from your attacks, attacking and defending faster, using the psychic rock attack multiple times in a row, and being even stricter with parrying -- that is, if you have Sword. To make matters worse, his fight is exclusive to The Ultimate Cup Z, being fought in Round 8 and coming just before...

* And then there's the '''Greater Doomer'''. He shares all the attacks of his fellow Sphere and Grand Doomers, but he flies around so much that he's hard to land a hit on, compared to the preceding bosses moving at a reasonable enough pace for you to get them. This manages to be both annoying for the heavyweight Hammer Lord, who can pack a punch but can't run very fast, and the Sword Hero, who can run fast but can't land very many hits. And of course, gotta have that time limit. Hope you brought plenty of Gem Apples!
* '''Pyribbit''' is listed for ''Triple Deluxe'' already, but he deserves special mention here. He's the third Ordeal boss, roughly at the halfway point of the game. His love of stalling is carried over, but he's now got much more HP and attack, and a three-minute time limit to beat him in. In ''Team Kirby Clash'', he's fairly beatable provided you grind a bit, but in this game, grinding is much more difficult and has less effect than buying expensive equipment. Mix this in with allies that are bad at dodging and you've got a very slow fight (in a game the requires fast fights), often marking the point where players either stop to grind Gem Apples or just start buying them. One more thing: to unlock the final area, you have to fight him ''again'', and he's even stronger.

* One of the biggest criticisms of ''Star Allies'' was the [[ItsEasySoItSucks lack of difficulty]] compared to the other games, especially for the Story Mode bosses. For this reason, the '''Parallel Bosses''' from Heroes In Another Dimension were made ''immensely'' more difficult than their normal counterparts:

* '''Parallel Nightmare''': One surprise in the game is the parallel version of the final boss of ''Kirby's Adventure'' with new attacks, and each subsequent fight can be a massive pain due to how Parallel Nightmare handles and the sheer damage he unleashes. Between the six different fights with him, attacks will change with almost no warning and new ones are frequently added. Several of his attacks used by the original Nightmare in ''Kirby's Adventure'' ''appear'' to fire off the same way, only for him to fake the player out and attack in a completely different fashion, his attacks cover more of the screen than they ever did before, he fires more projectiles, and, like other modern ''Kirby'' bosses, he's immune to being stunned unlike the original's fight. In comparison to the original's fight when he was the final boss, these fights can be some of the most grueling in the game outside of the final boss himself, and the absurd amount of health he has doesn't help things in his final few fights. This isn't helped by the fact that, much like the GBA fight with Nightmare in "Nightmare in Dream Land", Parallel Nightmare takes up almost ''30% of the screen and has huge hitboxes for almost every attack he uses''.

** '''Phantom Sillydillo''' is no better, as it can actually trap Kirby in the cage if you attempt to fly over the initial jump, and its charging attacks with both the paper machete dolls and roll being way faster, not to mention it is no longer vulnerable after rolling and it summons a sandstorm to cover its tracks during its third phase.

* '''Meta Knight''' has always been a skilled and powerful fighter, but the shift to 3D gives him the chance to show ''why'' he’s the strongest warrior in the galaxy. The sword beams he fires are large and need to be jumped over, [[SpamAttack rapid-fired]], or sent through the ground to chase after you. He will dodge or swerve away from attacks and fire back with lightning-fast sword swipes, plus at 40% of his maximum health he incorporates his psychic rock-lifting attack from ''VideoGame/KirbyStarAllies'' which covers most of the arena, and a mean charged attack that can take a bit less than half your health if it connects. Successfully parrying his attacks disarms Meta Knight and stuns him for a long time, but the timing is much stricter than in ''Star Allies'' and if you didn’t pick up the sword at the start of the fight, come in with the ability already, or happened to lose it, this isn’t possible.
** For how strong Meta Knight is, '''Phantom Meta Knight''' takes it up a notch, firing more sword beams, including when he leaps away from your attacks, attacking and defending faster, using the psychic rock attack multiple times in a row, and being even stricter with parrying -- that is, if you have Sword. To make matters worse, his fight is exclusive to The Ultimate Cup Z, being the fifth-to-last fight and coming just before...
* '''Phantom Forgo Dedede''': Now taking place over a lava arena that can be easily flooded, Phantom Forgo Dedede has a large barrage of aggressive attacks that can spew more lava, making space to deal damage very limited. He is also constantly moving, especially during his second phase, making it very hard to get damage done onto him. When first encountered, you're only given Tornado and Needle on the first half of the battle, which doesn't really help much.

** '''Forgo Leon''' starts with the difficult second phase as described above, but once his first health bar drains, [[DemonicPossession Forgo’s soul takes over completely]] and further powers him up to absurd levels, granting his attacks elemental properties that linger and spread across the arena as well as intensifying them. On top of that, Forgo will manifest and attack alongside Leon, launching orbs and explosions while you’re dealing with Leon’s own attacks.
* '''Morpho Knight''': This butterfly knight returns with a vengeance as the final fight of Forgo Dreams, and the penultimate boss of the Ultimate Cup Z. Several of its attacks sweep across the arena, home in on you, or both, and need pinpoint timing to dodge. [[TeleportSpam Morpho Knight loves to teleport away from or behind you]] and its melee attacks come out fast, making fighting up close almost a wasted effort. The worst attack it can do by far is its BugBuzz attack, which, since there aren’t any computer-controlled allies to turn against you, instead ''tilts the camera 90 degrees'' in an absolutely horrible InterfaceScrew. At 40% of its maximum health, its attacks increase in intensity and frequency. Finally, it comes immediately after Forgo Leon, and in Forgo Dreams, there’s no rest break or chance to heal in between.
* '''Chaos Elfilis''': The final fight in Ultimate Cup Z, this TrueFinalBoss is literally the unholy lovechild of Fecto Elfilis and Morpho Knight. It too loves to TeleportSpam, and its attacks come ''fast''. And just to make the fight drag on, it will often fly far out of your reach and drop projectiles and meteors that do spread damage. Their HealingFactor is worse than Fecto Elfilis in that now there are ''five'' you have to guess from. ''And this is only phase one.'' The second phase starts with a BlackHole trying to suck Kirby in, and if you can’t escape fast enough, it will deal a lot of damage. It also will enjoy dropping tons of rocks, with a very tight window to jump on narrow pillars and dodge the massive field attack, something that it will do twice back to back. In addition, the Ultimate Cup Z has very limited healing and Chaos Elfilis is the last of [[MarathonBoss twelve other battles]]. And if you die on Phase Two, paying to retry will make you have to go through Phase One all over again.

* '''Masked Dedede's Revenge''' is one of the hardest bosses in the game, as some of his attacks seem to home in on you. Fortunately, when revisiting the stage after encountering Queen Sectonia for the first time, it gives you the option of fighting him or going straight to the FinalBoss. '''Shadow Dedede''' from Dededetour is the same, but faster, more damaging, more random and inconsistent, and half his attacks cause [[StuffBlowingUp unnecessarily large explosions]].

* Sure, '''the Three Mage-Sisters''' are complete pushovers for experienced players, but their fight in Heroes in Another Dimension has them get even more serious. It's you against three at the same time, and their moves can be tricky to avoid. But once they enter the second phase, things become rather hard, especially when they use their strongest attacks consecutively, which can link into each other. Finding where you are is a challenge, too, with all these attacks going on, especially when you along with your Dream Friends ''also'' happen to be the [[MirrorMatch Mage-Sisters themselves]]. During all of this, the frame rate can sometimes lag, making things even tougher. And what's more, to get the Happy Ending, you must beat this boss with 100 Friend Hearts collected, and if you don't have 100 Friend Hearts, time to go back to previous levels to get the Friend Heart count to 100 and then fight them again.

* '''Sillydillo''' is a pretty large difficulty spike with many fast and hard-hitting attacks, including a cage that he can trap Kirby in and OneHitKill him if he doesn't escape in time, giant machete dolls that can be flung at Kirby, and ''[[ThatOneAttack especially]]'' a rolling move that pretty much demands dodging, ensuring that the no-damage mission will be a true test of skill. It also doesn't help that he spends much of the fight constantly moving around the battlefield, making him hard to hit and wasting precious time for players who want to complete the timed missions on his boss level and the Beast Pack rematches.

* '''Meta Knight''' has always been a skilled and powerful fighter, but the shift to 3D gives him the chance to show ''why'' he’s the strongest warrior in the galaxy. The sword beams he fires are large and need to be jumped over, [[SpamAttack rapid-fired]], or sent through the ground to chase after you. He will dodge or swerve away from attacks and fire back with lightning-fast sword swipes, plus at half health he incorporates his psychic rock-lifting attack from ''VideoGame/KirbyStarAllies'' which covers most of the arena, and a mean charged attack that can take a bit less than half your health if it connects. Successfully parrying his attacks disarms Meta Knight and stuns him for a long time, but the timing is much stricter than in ''Star Allies'' and if you didn’t pick up the sword at the start of the fight, come in with the ability already, or happened to lose it, this isn’t possible.

* '''Morpho Knight''': This butterfly knight returns with a vengeance as the final fight of Forgo Dreams, and the penultimate boss of the Ultimate Cup Z. Several of its attacks sweep across the arena, home in on you, or both, and need pinpoint timing to dodge. [[TeleportSpam Morpho Knight loves to teleport away from or behind you]] and its melee attacks come out fast, making fighting up close almost a wasted effort. The worst attack it can do by far is its BugBuzz attack, which, since there aren’t any computer-controlled allies to turn against you, instead ''tilts the camera 90 degrees'' in an absolutely horrible InterfaceScrew. At half health, its attacks increase in intensity and frequency. Finally, it comes immediately after Forgo Leon, and in Forgo Dreams, there’s no rest break or chance to heal in between.

* '''Sillydillo''' is a pretty large difficulty spike with many fast and hard-hitting attacks, including a cage that he can trap Kirby in and OneHitKill him if he doesn't escape in time, giant machete dolls that can be flung at Kirby, and a rolling move that pretty much demands dodging. It also doesn't help that he spends much of the fight constantly moving around the battlefield, making him hard to hit and wasting precious time for players who want to complete the timed missions on his boss level and the Beast Pack rematches.

* '''Hyness''' can quickly catch players off guard due to the DifficultySpike from phase one to phase two of his fight. The first phase can actually be considered a BreatherBoss due to how easy his attacks are to dodge and how easily his health drops. But after his first health bar is depleted, he ramps it UpToEleven. After he refills his energy, he starts attacking at a rapid rate, using attacks that can cover most of the ground, shielding himself while he throws attacks from behind. He will even roll around when his health reaches a certain point, making him both hard to dodge and hard to attack for quite a while. '''Corrupt Hyness''', fought at the end of Heroes in Another Dimension, hurls more powerful and screen-filling versions of regular Hyness' attacks. And if you best him, well, see the Three Mage-Sisters below.

* '''[[DiscOneFinalBoss King Dedede]]''' becomes this [[AdaptationalBadass in the GBA remake]]. While he's a bit quicker in the NES version, he's bigger here despite the screen's smaller resolution -- so both he and his attacks (especially his [[VacuumMouth inhale]]) become much harder to avoid -- and his characteristic ''"flinching-when-hit"'' does not stop his attacks or momentum when he jumps. With that, you can very well end up hitting him, only for him to fall on you or stomp you with his Hammer to cause damage like nothing happened. Oh, and most of the Copy Abilities [[DamageSpongeBoss do minimal damage to him as well]]. [[spoiler: This may be justified, since Dedede is the last one standing between Nightmare and him taking over Dream Land, so Dedede was giving his all in his fight against Kirby.]]

* The second fight with '''Dark Meta Knight''' is arguably harder than the final boss (who can be difficult himself) if you don't bring the other Kirbys with you into the mirror. The inhalabale stars left from his attacks disappear after about a second, meaning you have to be very close to him when he attacks, making it nearly impossible to inhale the stars without taking damage. His tornadoes are impossible to avoid if you don't get behind him before he fires them. And sometimes he walks around, meaning that if you stand next to him waiting for him to attack, he can just walk into you. Hover above him for more than a second and he will jump up and stab you from below. A Copy Ability could make the fight easier, but in this game you lose it with one hit, and while it can be recovered, if Dark Meta Knight kills you, you immediately start over at the beginning of the battle, with no means of picking up another Copy Ability until you get a Game Over, meaning that, unless you're incredibly skilled enough to defeat him without a Copy Ability, you may lose all the lives you've gotten in the course of the game. This in turn increases your odds of getting a Game Over to the final boss, and if you do, you have to fight Dark Meta Knight to get to him again.

* '''[[DiscOneFinalBoss King Dedede]]''' becomes this [[AdaptationalBadass in the GBA remake]]. While he's a bit quicker in the NES version, he's bigger here despite the screen's smaller resolution -- so both he and his attacks (especially his [[VacuumMouth inhale]]) become much harder to avoid -- and his characteristic ''"flinching-when-hit"'' does not stop his attacks or momentum when he jumps. With that, you can very well end up hitting him, only for him to fall on you or stomp you with his Hammer to cause damage like nothing happened. Oh, and most of the Copy Abilities [[DamageSpongeBoss do minimal damage to him as well]].

* Once you've obtained the Three Mage-Sisters as Dream Friends, you might be tempted to go through Guest Star mode with them, as they're PurposelyOverpowered enough to make the entire game a complete cakewalk. To balance this out, they're forced to fight the four Parallel bosses... and at the end, '''Morpho Knight EX''', who makes even Parallel Meta Knight look like a complete chump. To start with, Morpho Knight EX's AI is ''[[TheBerserker highly aggressive]]'' compared to [[RecurringBossTemplate other knight bosses in the franchise]], all of whom are ''also'' {{Superboss}}es in their own right, and it has a nasty habit of [[DefendCommand blocking your attacks]] at the worst possible time. Trying to fly over the boss's [[SwordBeam Sword]] BeamSpam is an extremely risky option, as it will simply jump into the air and SpinAttack you no matter how high up you think you are. Even if you attempt to bring allies into the fray, Morpho Knight EX will either [[HatePlague turn them against you]] with a BugBuzz attack that has an ''enormous'' radius, or [[WeaponsThatSuck suck]] them into a slash from its BFS that will [[ThatOneAttack straight-up murder them]]. Oh, and if you're playing [[BossRush Soul Melter EX]], you'll have to defeat Morpho Knight EX immediately after fighting the Three Mage-Sisters, who are detailed above, in order to reach the TrueFinalBoss at the end. Good luck!

* '''Meta Knight''' may very well be the hardest boss in the game, at least on the NES — for starters, the Sword ability is forced onto the player, preventing any alternatives from being used (and unlike ''Kirby Super Star'' and ''Kirby Star Allies'', picking up the Sword is required to even start the fight). Secondly, Meta Knight moves very erratically, making contact damage almost guaranteed. Finally, he is invincible unless attacked at specific times — namely, while in the air or from behind — and even if you do get behind him, he'll quickly turn around and more often than not hit you back. The difficulty was dramatically decreased in the GBA remake, where simple Button Mashing will nearly always win the fight due to Meta Knight's slower reflexes and the range of the sword.

* '''Heavy Mole''' is an [[GetBackHereBoss autoscrolling boss]] that keeps destroying the earth in front of it, meaning that the player has to constantly adapt to the perpetually changing environment while avoiding getting crushed by the scrolling walls or falling into a pit. Heavy Mole's missiles offer two copy abilities: Hammer, which brings the double-edged sword of tearing the dirt that forms the arena, and [[JokeItem Sleep]], which temporarily immobilizes Kirby and has a high risk of [[PoisonMushroom screwing the player over]]. There are cosmetic differences between the two types of missiles, but they're somewhat subtle and hard to notice during the rush to defeat the boss.

* Kracko doesn't appear in this game. Instead, you fight '''Mecha Kracko'''. While he's annoying enough on his own, once he TurnsRed, he starts using an attack where he moves towards the bottom of the screen, destroys the stage, and reforms it later. If you don't take to the air in time, you will lose from falling off the screen. Regular Kracko may be annoying, but at least he doesn't use an attack that can cause a OneHitKO at regular intervals. This is the only boss in the game that has two health bars to drain, even including the FinalBoss.

* '''Dark Daroach''' teleports around the room and has long-lasting projectile attacks, a hard-to-dodge ice beam and a bomb that sends a column of fire upward and covers the floor. Sometimes he can throw two or three bombs in a row, and they can take a while to suck in, which is impossible to do if he follows up with his projectile attack, which shoots three stars that bounce around the room. They are easier to suck in but harder to dodge. And, given that he and the final boss (who is a lot easier) are faced back to back in this stage, you'd think they would give you every single Copy Ability before the fight like other games do, but instead you only get Cutter, Parasol, and Random, so hope that Random eventually turns into tornado, laser, or UFO.

* '''Goriath'''. He wall clings just above the range of a lot of vertical attacks, forcing you to jump to get to him ? and sometimes he'll decide he's going to drop down on top of you, so if you're jumping under him and/or the floor is icy, he will hit you. If you're in the air when he jumps from one side to the other, he will jump right into you. When the floor breaks and gets icy in his second phase, it becomes easier to avoid his KiManipulation and giant punches, but harder to get away from his body slam, that flying tackle, and the exploding spiky ice balls. He's so fast and jumps around so much that he's hard to hit. For Galacta Knight, and most other hard bosses in the game, dash attacks with invincibility frames are very effective ? but Goriath's floor changing and wall clinging make them useless at best, so you'd better get used to fighting a different way. Goriath EX, once he TurnsRed, even gets a [[Franchise/DragonBall Spirit Bomb]] attack.

** '''Parallel Woods''' sets the stage for the rest of the mode quite nicely--not only does he drop far denser amounts of apples than before, but he also drops [[InvincibleMinorMinion Gordos]], which stay on the screen for a long time and bounce around in unpredictable ways, and often does this while trying to inhale Kirby to screw with your movement. Once the second phase hits, he starts dropping apples during his stomp attack (which require quick reflexes to dodge since you can't see them growing on his branches) and spits air bullets that [[RecursiveAmmo split into smaller bullets]] and cover a wide area of the screen.

** '''Parallel Meta Knight''' takes after his difficult battles from the older ''Kirby'' games, being [[TheBerserker much faster, more aggressive and less predictable]] than regular Meta Knight. Even if you have the Sword ability and parry his attacks, he recovers much quicker. It gets worse in phase 2, as you'll once again have to deal with up to ''four Meta Knights'', who are now much more of a problem than in normal mode thanks to the aforementioned increased speed and aggression.
** '''Parallel Dedede''', like Parallel Meta Knight, is much faster and more aggressive than regular Dedede--he barely gives you time to breathe as he releases an onslaught of shockwaves, Gordos, and body slams, never pausing between attacks like he normally does. His second form manages to one-up this by combining this increased speed with Buff Dedede's increased range, forcing you to play defensively and hardly giving a good opportunity to attack back. Sometimes he even starts a new attack before the last one has completely finished, forcing you to dodge shockwaves ''and'' thrown fruit and Gordos at the same time.

* '''Parallel Nightmare''': One surprise in the game is the parallel version of the final boss of ''Kirby's Adventure'' with new attacks, and each subsequent fight can be a massive pain due to how Parallel Nightmare handles and the sheer damage he unleashes. Between the six different fights with him, attacks will change with almost no warning and new ones are frequently added. Several of his attacks used by the original Nightmare in Kirby's Adventure ''appear'' to fire off the same way, only for him to fake the player out and attack in a completely different fashion, his attacks cover more of the screen than they ever did before, he fires more projectiles, and, like other modern Kirby bosses, he's immune to being stunned unlike the original's fight. In comparison to the original's fight when he was the final boss, these fights can be some of the most grueling in the game outside the final boss himself, and the absurd amount of health he has doesn't help things in his final few fights. This isn't helped by the fact that, much like the GBA fight with Nightmare in "Nightmare in Dream Land", Parallel Nightmare takes up almost ''30% of the screen and has huge hitboxes for almost every attack he uses''.

* '''Sillydillo''' is a pretty large difficulty spike with many fast and hard-hitting attacks, including a cage that he can trap Kirby in and One-Hit Kill him if he doesn't escape in time, giant machete dolls that can be flung at Kirby, and a rolling move that pretty much demands dodging. It also doesn't help that he spends much of the fight constantly moving around the battlefield, making him hard to hit and wasting precious time for players who want to complete the timed missions on his boss level and the Beast Pack rematches.

* '''Meta Knight''' has always been a skilled and powerful fighter, but the shift to 3D gives him the chance to show ''why'' he’s the strongest warrior in the galaxy. The sword beams he fires are large and need to be jumped over, [[SpamAttack rapid-fired]], or sent through the ground to chase after you. He will dodge or swerve away from attacks and fire back with lightning-fast sword swipes, plus at half health he incorporates his psychic rock-lifting attack from VideoGame/KirbyStarAllies which covers most of the arena, and a mean charged attack that can take a bit less than half your health if it connects. Successfully parrying his attacks disarms Meta Knight and stuns him for a long time, but the timing is much stricter than in ''Star Allies'' and if you didn’t pick up the sword at the start of the fight, come in with the ability already, or happened to lose it, this isn’t possible.
** For how strong Meta Knight is, '''Phantom Meta Knight''' takes it up a notch, firing more sword beams including when he leaps away from your attacks, attacking and defending faster, using the psychic rock attack multiple times in a row and being even stricter with parrying - that is, if you have Sword. To make matters worse, his fight is exclusive to The Ultimate Cup Z, being the fifth-to-last fight and coming just before...

** '''Forgo Leon''' starts with the difficult second phase as described above, but once his first health bar drains [[DemonicPossession Forgo’s soul takes over completely]] and further powers him up to absurd levels, granting his attacks elemental properties that linger and spread across the arena as well as intensifying them. On top of that, Forgo will manifest and attack alongside Leon, launching orbs and explosions while you’re dealing with Leon’s own attacks.
* '''Morpho Knight''': This butterfly knight returns with a vengeance as the final fight of Forgo Dreams, and the penultimate boss of the Ultimate Cup Z. Several of its attacks sweep across the arena, home in on you, or both, and need pinpoint timing to dodge. [[TeleportSpam Morpho Knight loves to teleport away from or behind you]] and its melee attacks come out fast, making fighting up close almost a wasted effort. The worse attack it can do by far is its BugBuzz attack, which since there aren’t any computer-controlled allies to turn against you, instead ''tilts the camera 90 degrees'' in an absolutely horrible InterfaceScrew. At half health, its attacks increase in intensity and frequency. Finally, it comes immediately after Forgo Leon, and in Forgo Dreams, there’s no rest break or chance to heal in between.

* '''Sillydillo''' is a pretty large difficulty spike with many fast and hard-hitting attacks, including a cage that he can trap Kirby in and One-Hit Kill him if he doesn't escape in time, giant machete dolls that can be flung at Kirby, and a rolling move that pretty much demands dodging. It also doesn't help that he spends much of the fight constantly moving around the battlefield, making him hard to hit and wasting precious time for players who want to complete the timed mission on its boss level.
** Its '''Phantom Sillydillo''' version is no better, as it can actually trap Kirby in a cage if you attempt to fly over the initial jump, and its charging attacks with both the paper machete dolls and roll being way faster.

* '''Parallel Nightmare''': One surprise in the game is the return of the final boss of Kirby's Adventure as a specialized parallel form with new attacks, and each subsequent fight can be a massive pain due to how Parallel Nightmare handles and the sheer damage he unleashes. Between the six different fights with him, attacks will change with almost no warning and new ones are frequently added. Several of his attacks used by the original Nightmare in Kirby's Adventure ''appear'' to fire off the same way, only for him to fake the player out and attack in a completely different fashion, his attacks cover more of the screen than they ever did before, he fires more projectiles, and, like other modern Kirby bosses, he's immune to being stunned unlike his original fight. In comparison to his fight when he was the final boss, these fights can be some of the most grueling in the game outside the final boss himself, and the absurd amount of health he has doesn't help things in his final few fights. This isn't helped by the fact that, much like the GBA fight with Nightmare in "Nightmare in Dream Land", Parallel Nightmare takes up almost ''30% of the screen and has huge hitboxes for almost every attack he uses''.

* The second fight with ''Dark Meta Knight'' is arguably harder than the final boss (who can be difficult himself) if you don't bring the other Kirbys with you into the mirror. The inhalabale stars left from his attacks disappear after about a second, meaning you have to be very close to him when he attacks, making it nearly impossible to inhale the stars without taking damage. His tornadoes are impossible to avoid if you don't get behind him before he fires them. And sometimes he walks around, meaning that if you stand next to him waiting for him to attack, he can just walk into you. Hover above him for more than a second and he will jump up and stab you from below. A Copy Ability could make the fight easier, but in this game you lose it with one hit, and while it can be recovered, if Dark Meta Knight kills you, you immediately start over at the beginning of the battle, with no means of picking up another Copy Ability until you get a Game Over, meaning that, unless you're incredibly skilled enough to defeat him without a Copy Ability, you may lose all the lives you've gotten in the course of the game. This in turn increases your odds of getting a Game Over to the final boss, and if you do, you have to fight Dark Meta Knight to get to him again.

* '''Dark Daroach''' teleports around the room and has long-lasting projectile attacks, a hard-to-dodge ice beam and a bomb that sends a column of fire upward and covers the floor. Sometimes he can throw two or three bombs in a row, and they can take a while to suck in, which is impossible to do if he follows up with his projectile attack, which shoots three stars that bounce around the room. They are easier to suck in but harder to dodge. And, given that he and the final boss (who is a lot easier) are faced back to back in this stage, you'd think they would give you every single Copy Ability before the fight like other games do, but instead you only get Cutter, Parasol, and Random, so hope the latter eventually turns into tornado or laser.

* '''Dark Daroach''' teleports around the room and has long-lasting projectile attacks, a hard-to-dodge ice beam and a bomb that sends a column of fire upward and covers the floor.

'''NOTE''': {{Final Boss}}es and {{Wake Up Call Boss}}es are not allowed unless they're overly difficult by their standards. Extra Mode bosses don't actually count as {{Bonus Boss}}es, but will only be allowed to count if they stand out even in there.

* '''Meta Knight''' may very well be the hardest boss in the game, at least on the NES — for starters, the Sword ability is forced onto the player, preventing any alternatives from being used (and unlike Kirby Super Star, picking up the Sword is required to even start the fight). Secondly, Meta Knight moves very erratically, making contact damage almost guaranteed. Finally, he is invincible unless attacked at specific times — namely, while in the air or from behind — and even if you do get behind him, he'll quickly turn around and more often than not hit you back. The difficulty was dramatically decreased in the GBA remake, where simple Button Mashing will nearly always win the fight due to Meta Knight's slower reflexes and the range of the sword.

* '''Parallel Nightmare''': One surprise in the game is the return of the final boss of Kirby's Adventure as a specialized new form with new attacks, and each subsequent fight can be a massive pain due to how the new Nightmare handles and the sheer damage he unleashes. Between the five different fights with him, attacks will change with almost no warning and new ones are frequently added. Several of his attacks in Kirby's Adventure ''appear'' to fire off the same way, only for him to fake the player out and attack in a completely different fashion His attacks cover more of the screen than they ever did before, he fires more projectiles, and, like other modern Kirby bosses, he's immune to being stunned unlike his original fight. In comparison to his fight when he was the final boss, these fights can be some of the most grueling in the game outside the final boss himself, and the absurd amount of health he has doesn't help things in his final few fights. This isn't helped by the fact that, much like the GBA fight with Nightmare in "Nightmare in Dreamland", Parallel Nightmare takes up almost ''30% of the screen and has huge hitboxes for almost every attack he uses''.

* '''Goldon and Silvox''' can be quite a pesky boss duo in Guest Star ???? or The Ultimate Choice if you're playing as a limited-moveset helper such as Rocky or Como; While their moveset is essentially the same as Pon and Con from earlier in the game, they run at a much higher speed, and can quickly catch you off-guard in the second phase, where the tower in the middle allows them to run between the levels on the battlefield and cut you off. The fact that they run much faster than you at the point you're at means that unless you found some speed power ups beforehand, much of the fight will consist of you [[GetBackHereBoss chasing after them]] to get a good hit in.

* '''Dark Matter''', the {{true final boss}} of the game, is absurdly hard, even by ''Kirby'' [[EasyLevelsHardBosses standards]]. He's a very fast opponent with very fast attacks in both phases of the fight, and the [[EleventhHourSuperpower Rainbow Sword]] does very little damage on its own and can't fire projectiles, meaning that the only way to do anything noticeable to Dark Matter is to [[TennisBoss deflect his orb attacks back at him]]. Meanwhile, his second form can shoot lightning from its eye, a very fast attack that can only be dodged by standing directly in front of him (which in itself is kind of a GuideDangIt, as there's no initial indication that the lightning only fires diagonally), and while fighting his second phase, Kirby is slowly descending back to the surface, giving the player [[TimeLimitBoss a small window of time]] to kill Dark Matter before the little puffball burns to death in the planet's atmosphere. Both of Dark Matter's forms also have an astronomically high amount of health, making the second phase even harder to complete.

* Sure, '''the Three Mage-Sisters''' are complete pushovers for experienced players, but their fight in Heroes in Another Dimension has them get even more serious. It?s you against three at the same time, and their moves can be tricky to avoid. But once they enter the second phase, things become rather hard, especially when they use their strongest attacks consecutively, which can link into each other. Finding where you are is a challenge, too, with all these attacks going on, especially when you along with your Dream Friends ''also'' happen to be the [[MirrorMatch Mage-Sisters themselves]]. During all of this, the frame rate can sometimes lag, making things even tougher. And what?s more, to get the Happy Ending, you must beat this boss with 100 Friend Hearts collected, and if you don?t have 100 Friend Hearts, time to go back to previous levels to get the Friend Heart count to 100 and then fight them again.

* '''Kracko Jr.''' in the Extra Mode. Lightning fast, with a completely different attack pattern that gave you next to no time to react. [[note]]Kracko himself actually became ''easier'' in Extra Mode, due to his attack pattern being much more simplistic and predictable. You can win the entire fight while just standing in a corner and jumping when you need to. Because of this, Extra Mode Kracko is subversively the easiest boss in the game.[[/note]]

* '''[[DualBoss Mr. Shine & Mr. Bright]]''' also qualify in the eyes of some players, since it can often be difficult to deal with the one on the ground and the one in the air at the same time, especially given the fact that defeating one doesn't stop them from actively participating in the rest of the fight. Whether or not they were made harder in the remake is up for debate, as their size is dramatically increased despite the smaller game resolution yet their attack patterns are considerably slower to compensate.

[[AC:''VideoGame/KirbySuperStar'' and ''VideoGame/KirbySuperStarUltra'']]
* '''Fatty Whale''': This boss's attack pattern is randomized slightly, making him pretty unpredictable, and his attacks are pretty hard to dodge as well! When he gets the palette swap in Milky Way Wishes, he gets even worse, using a few new attacks, including attacks where he jumps across the arena! He's actually much slower in ''Ultra'' compared to how he was in the original, but he's still a pain to take out even in that version.

* The True Arena in this game is possibly the most infamous one for two reasons: One being its [[MarathonLevel sheer length]], and the other is the FinalBoss, '''Star Dream Soul OS''' ''ALONE''. To say this fight is hard even by FinalBoss or even BonusBoss standards is a major understatement. For starters it has a whopping ''five phases'', all of which must be fought in one go, and because most of the fight is spent in the [[SuperMode Robobot Armor's Halberd Mode]], you can't cheese the first three-fifths of the fight with [[GameBreaker Stone, Hammer, Archer or ESP]]. And unlike previous True Arenas, this one won?t let you save items for later. You HAVE to take them when you?re given them or not at all. To rub it in further, the item you get before this one is merely an Energy Drink, which will heal 50% of your health, which is likely not enough to get you through the following:
** The first form enjoys spamming projectiles. If you haven't mastered the dodging technique, you'll most likely get damaged. It has new attacks, ranging from turning into a fireball and ramming towards you ''twice'', combining an asteroid shower (which it has done before) with a deadly laser you have to dodge, and forming a barrier (that can only be destroyed by destroying the two small hearts it has)... while summoning giant Code Cubes, drilling off to the side and firing massive laser beams.
** The second form is a lot larger, but it has attacks that are far harder to dodge. The first thing it does is swallow a bunch of meteors (along with you) and spits them out. It also summons Gigavolt IIs and missiles (which you can collect for the Planet Buster), but unless you're aware that the Sail Wing can destroy enemies behind the Halberd, you'll probably get damaged trying to reach them. Additionally, its limbs have an additional attack where they'll fill up the screen, and can only be dodged if you use the Sail Wing or are at a particular corner at a particular time.
** Instead of a black hole-like move (which the second form uses instead), the third form starts off with eye lasers that will always flow from the top and go to the bottom (you can hit it while it's doing that). It still has the countdown move (meaning that if you [[TimedBossBattle don't beat the boss in time]] and don't time the dodge correctly, kiss your True Arena run goodbye). To survive the battle, you have to stay fully focused and keep hitting it at every opportunity you have. If you can destroy the objects it throws out, you can get fully charged Planet Busters, but it summons more obstacles than its first battle, which leaves you little time and room for error.
*** [[ThatOneAttack Numbers 5-1. While 5, 4, and 3 aren't very difficult to avoid, 2 and 1 are.]] The former will quickly spin around the screen, and if you want to avoid it, you'll have to move around a lot and be very careful. The latter (assuming you haven't gotten to the fourth form yet) will spin around and charge at you at an unpredictable angle, meaning that you'll have to have good reflexes if you plan to dodge it. And if the battle drags on longer than that, [[OneHitKill well...]]
** If you were lucky enough to endure through three of these forms, you'll be fighting the final form. Thankfully, it fights more like a traditional ''Kirby'' boss battle... but the entire battle takes place in a circular field. The first phase is slightly easier (as a CallBack to the Galactic Nova Nucleus battle), but the second phase is where things go to hell. It has very unpredictable TeleportSpam (you will have no idea where it'll go), it has several devastating attacks from lasers that will fire out explosions afterwards, cutters that are far more devastating and fire quickly, and a split-in-two attack that always follows with a massive explosion.\\
\\
Sure, this battle may not be too hard if you're at full health, but this is after enduring three previous hard-to-dodge forms... meaning you'll have barely any health left unless if you managed to perfect run all of them. And unless your health bar is completely full (which is very doubtful), the very last few attacks it does are all a OneHitKO that bypass every single semi-invulnerable moves (Stone, Archer, and Leaf, for example) except for ESP's teleport and the frames where Kirby gets an ability. If you aren't aware of that, you could potentially waste about thirty minutes for nothing. [[ContinuingIsPainful Being a true champion isn't easy, indeed.]]

* '''Vividria''' is the only new mid-boss of this game, and undoubtedly the strongest of the lot. She has a wider variety of attacks than the rest of them, from raining paint to drawing up various projectiles, and she can even summon an animate sculpture to assist her. She's not too bad in Story Mode, but higher difficulties of The Ultimate Choice pit you against two of her upgraded form at once, which can form an early roadblock for solo runs (especially since they each have different attack patterns). Vividria's really making good on her promise to her sisters[[note]]heavily implied to be [[VideoGame/KirbyCanvasCurse Drawcia]] and [[VideoGame/KirbyTripleDeluxe Paintra]][[/note]] that she would do her best.

* The TrueFinalBoss, '''Void Soul''', takes an extreme difficulty spike from his standard form. First off, this form releases more shockwaves at slightly trickier patterns, making it hard to jump over. The effects of his blade attacks are also larger and harder to dodge. The second phase is more or less a BreatherBoss, and the third phase abuses some rather nasty beam spam near the end. However, once you reach the actual Soul form, things REALLY get tricky. He opens with an unfriending wave which will force you to either stop fighting to dodge your own allies and try to either refriend them or defeat them. The boss splits himself into four large segments and bounces around the room erratically, flattening anyone it lands on. Eventually, it begins rapidly spamming some highly damaging beam attacks which require fast reflexes to avoid.
** You thought Void Soul was hard? Go to Soul Melter EX and say hello to '''Void'''. The first phase and third phase have air shockwaves, meaning you have to be careful with your jumps. In addition, the third phase gains MORE Master Crowns, going up to four, meaning more laser beams, even ones that require you to move in the other direction or take damage. And the spears it throws onto the battlefield? They now send out more shockwaves, causing everything to get hectic. And after you beat the third phase, Void reveals itself, pulling out a ''VideoGame/DonPachi''-level BulletHell followed by even more laser beams than ever. If you are on low health when you reach this point (and you ''will'' be), say goodnight. Although it no longer has small clones that inhale players or unfriending waves to turn your teammates against you, that doesn't make this part of the fight easier, what with the upgraded attacks and all. Although the horrid [[ElectrifiedBathtub electrified water doesn't return, it ''does'' slow you down]]. In addition, it gains moves from final bosses of years past: [[VideoGame/KirbyAndTheAmazingMirror Dark Mind's laser beam/reflecting mirror combo; [[VideoGame/KirbyCanvasCurse Drawcia Soul]]?s strategy of approaching from different directions [[PlayingWithFire while on fire]], and BeamSpam that puts Void Soul to shame. Once you reach the point where it ''solely'' uses the above three attacks, ''good luck''. If you somehow endure all of that and tear Void apart, you unlock the ability to give Kirby his classic look from the main menu.]]
* Almost forgot about Morpho Knight, didn't we? [[BreatherBoss What a joke he was.]] Not so with his upgraded version, '''Morpho Knight EX'''. Instead of standing around letting you attack him, ''he's'' the one on the attack, [[TheBerserker not stopping until either you or he go down. Furthermore, his relatively slow attacks are upgraded to the point where it's near impossible for any AI-controlled teammates to dodge, whether it be through gravitational whirlwinds or more range]]. Oh, and in Soul Melter EX, he comes between the aforementioned Mage-Sisters and Void. Let's just say your death is pretty much assured.

[[AC:General]]
* '''Meta Knight''' has a tendency to be this regardless of what game he appears in. Between his lightning-fast movement, hard-to-dodge attacks (particularly his [[ThatOneAttack lightning tornado]] and Mach Tornado attacks), and generally good A.I. (including [[TheComputerIsACheatingBastard being able to block your attacks in some games]]), not to mention that several games force you to fight him as Sword Kirby (which has very limited range, forcing you to get up close). ''Kirby: Squeak Squad'' balances this out somewhat by making him the penultimate boss and making him vulnerable to being knocked backwards. In ''Kirby: Planet Robobot'', Mecha Knight uses a different attack pattern entirely in conjunction with his sword slashes. In ''Kirby Star Allies'', he splits into up to 4 copies during his second phase, each attacking at the same time.

[[AC:''VideoGame/KirbysAdventure'']]

* '''[[DualBoss Mr. Shine & Mr. Bright]]''' also qualify in the eyes of some players, since it can often be difficult to deal with the one on the ground and the one in the air at the same time, especially given the fact that defeating one doesn't stop them from actively participating in the rest of the fight. Whether or not they were made harder in the remake is up for debate, as their size is dramatically increased despite the smaller game resolution yet their attack patterns are considerably slower to compensate.
* '''[[DiscOneFinalBoss King Dedede]]''' becomes this [[AdaptationalBadass in the GBA remake]]. While he's a bit quicker in the NES version, he's bigger here despite the screen's smaller resolution -- so both he and his attacks (especially his [[VacuumMouth inhale]]) become much harder to avoid -- and his characteristic ''"flinching-when-hit"'' does not stop his attacks or momentum when he jumps. With that, you can very well end up hitting him, only for him to fall on you or stomp you with his Hammer to cause damage like nothing happened. Oh, and most of the Copy Abilities [[DamageSpongeBoss do minimal damage to him as well]]. [[note]]On the bright side though, you do get some [[https://www.youtube.com/watch?v=NzijAhol4XI awesome music]] when you fight him in the GBA remake -- a rendition of the "Fountain of Dreams" theme from ''VideoGame/SuperSmashBros Melee'' (itself a rendition of "Gourmet Race" from ''VideoGame/KirbySuperStar'', compared to the NES version's use of the standard boss theme as opposed to a unique composition or the Mt. Dedede theme (EarlyInstallmentWeirdness may play into this a bit, as at the time it was simply a theme for the ''VideoGame/KirbysDreamLand'' level rather than being a distinct motif for King Dedede, kinda like how the castle theme in ''VideoGame/SuperMarioBros1'' never actually became a motif for Bowser).[[/note]]

* [[spoiler:'''Dark Matter''', the {{true final boss}} of the game,]] is absurdly hard, even by ''Kirby'' [[EasyLevelsHardBosses standards]]. He's a very fast opponent with very fast attacks in both phases of the fight, and the [[EleventhHourSuperpower Rainbow Sword]] does very little damage on its own and can't fire projectiles, meaning that the only way to do anything noticeable to [[spoiler:Dark Matter]] is to [[TennisBoss deflect his orb attacks back at him]]. Meanwhile, his second form can shoot lightning from its eye, a very fast attack that can only be dodged by standing directly in front of him (which in itself is kind of a GuideDangIt, as there's no initial indication that the lightning only fires diagonally), and while fighting his second phase, Kirby is slowly descending back to the surface, giving the player [[TimeLimitBoss a small window of time]] to kill Dark Matter before the little puffball burns to death in the planet's atmosphere. Both of [[spoiler:Dark Matter]]'s forms also have an astronomically high amount of health, making the second phase even harder to complete.

* [[spoiler:'''Dark Daroach''']] teleports around the room and has long-lasting projectile attacks, a hard-to-dodge ice beam and a bomb that sends a column of fire upward and covers the floor.

* '''Goriath'''. He wall clings just above the range of a lot of vertical attacks, forcing you to jump to get to him — and sometimes he'll decide he's going to drop down on top of you, so if you're jumping under him and/or the floor is icy, he will hit you. If you're in the air when he jumps from one side to the other, he will jump right into you. When the floor breaks and gets icy in his second phase, it becomes easier to avoid his KiManipulation and giant punches, but harder to get away from his body slam, that flying tackle, and the exploding spiky ice balls. He's so fast and jumps around so much that he's hard to hit. For [[spoiler:Galacta Knight]], and most other hard bosses in the game, dash attacks with invincibility frames are very effective — but Goriath's floor changing and wall clinging make them useless at best, so you'd better get used to fighting a different way. Goriath EX, once he TurnsRed, even gets a [[Franchise/DragonBall Spirit Bomb]] attack.

* [[spoiler:'''Masked Dedede's Revenge''']] is one of the hardest bosses in the game, as some of his attacks seem to home in on you. Fortunately, when revisiting the stage after encountering [[spoiler:Queen Sectonia]] for the first time, it gives you the option of fighting him or going straight to the FinalBoss. [[spoiler:'''Shadow Dedede''' from Dededetour]] is the same, but faster, more damaging, more random and inconsistent, and half his attacks cause [[StuffBlowingUp unnecessarily large explosions]].

* In Area 5 (Rhythm Route), the boss is a '''Dedede Clone'''. It supposedly behaves like Dedede... attack pattern and everything. However, once you deal enough damage to it, the next phase of the battle becomes a huge pain in the ass. It'll end up splitting into three smaller clones, which are all extremely unpredictable and difficult to attack. They will trip, hammer, jump, and even fly to get in your way. If you don't have a power that has an invulnerability period while dashing (Hammer and ESP are two examples), good luck, as you're better off without a power otherwise. [[spoiler:That's not even the entire boss battle, as once you defeat the clones, they ride on a giant cannon and attack you from there. Fortunately, the boss becomes easier from that point on, as their attack pattern there is now slower and more predictable.]]
* The True Arena in this game is possibly the most infamous one for two reasons: One being its [[MarathonLevel sheer length]], and the other is the FinalBoss, '''Star Dream Soul OS''' ''ALONE''. To say this fight is hard even by FinalBoss or even BonusBoss standards is a major understatement. For starters it has a whopping ''five phases'', all of which must be fought in one go, and because most of the fight is spent in the [[SuperMode Robobot Armor's Halberd Mode]], you can't cheese the first three-fifths of the fight with [[GameBreaker Stone, Hammer, Archer or ESP]]. And unlike previous True Arenas, this one won’t let you save items for later. You HAVE to take them when you’re given them or not at all. To rub it in further, the item you get before this one is merely an Energy Drink, which will heal 50% of your health, which is likely not enough to get you through the following:

** The second form is a lot larger, but it has attacks that are far harder to dodge. The first thing it does is swallow a bunch of meteors (along with you) and spits them out. It also summons Gigavolt IIs and missiles (which you can collect for the Planet Buster), but unless you're aware that [[spoiler:the Sail Wing can destroy enemies behind the Halberd]], you'll probably get damaged trying to reach them. Additionally, its limbs have an additional attack where they'll fill up the screen, and can only be dodged if you use the Sail Wing or are at a particular corner at a particular time.
** Instead of a black hole-like move (which the second form uses instead), the third form starts off with eye lasers that will always flow from the top and go to the bottom (you can hit it while it's doing that). It still has [[spoiler:the countdown move]] (meaning that if you [[TimedBossBattle don't beat the boss in time]] and don't time the dodge correctly, kiss your True Arena run goodbye). To survive the battle, you have to stay fully focused and keep hitting it at every opportunity you have. If you can destroy the objects it throws out, you can get fully charged Planet Busters, but it summons more obstacles than its first battle, which leaves you little time and room for error.
*** [[spoiler:[[ThatOneAttack Numbers 5-1]]. While 5, 4, and 3 aren't very difficult to avoid, 2 and 1 are.]] The former will quickly spin around the screen, and if you want to avoid it, you'll have to move around a lot and be very careful. The latter (assuming you haven't gotten to the fourth form yet) will spin around and charge at you at an unpredictable angle, meaning that you'll have to have good reflexes if you plan to dodge it. [[spoiler:And if the battle drags on longer than that, [[OneHitKill well...]]]]
** If you were lucky enough to endure through three of these forms, you'll be fighting the final form. Thankfully, it fights more like a traditional ''Kirby'' boss battle... but the entire battle takes place in a circular field. The first phase is slightly easier (as a CallBack to [[spoiler:the Galactic Nova Nucleus battle]]), but the second phase is where things go to hell. It has very unpredictable TeleportSpam (you will have no idea where it'll go), it has several devastating attacks from lasers that will fire out explosions afterwards, cutters that are far more devastating and fire quickly, and a split-in-two attack that always follows with a massive explosion.\\

Sure, this battle may not be too hard if you're at full health, but this is after enduring three previous hard-to-dodge forms... meaning you'll have barely any health left unless if you managed to perfect run all of them. And unless your health bar is completely full (which is very doubtful), the very last few attacks it does are all a OneHitKO that bypass every single semi-invulnerable moves (Stone, Archer, and Leaf, for example) except for [[spoiler:ESP's teleport and the frames where Kirby gets an ability]]. If you aren't aware of that, you could potentially waste about thirty minutes for nothing. [[ContinuingIsPainful Being a true champion isn't easy, indeed.]]

* [[spoiler:'''Hyness''']] can quickly catch players off guard due to the DifficultySpike from phase one to phase two of his fight. The first phase can actually be considered a BreatherBoss due to how easy his attacks are to dodge and how easily his health drops. But after his first health bar is depleted, he ramps it UpToEleven. After he refills his energy, he starts attacking at a rapid rate, using attacks that can cover most of the ground, shielding himself while he throws attacks from behind. He will even roll around when his health reaches a certain point, making him both hard to dodge and hard to attack for quite a while. [[spoiler:'''Corrupt Hyness''', fought at the end of Heroes in Another Dimension, hurls more powerful and screen-filling versions of regular Hyness' attacks. And if you best him, well, see the Three Mage-Sisters below.]]
* Sure, '''the Three Mage-Sisters''' are complete pushovers for experienced players, but [[spoiler:their fight in Heroes in Another Dimension has them get even more serious. It’s you against three at the same time, and their moves can be tricky to avoid. But once they enter the second phase, things become rather hard, especially when they use their strongest attacks consecutively, which can link into each other. Finding where you are is a challenge, too, with all these attacks going on, especially when you along with your Dream Friends ''also'' happen to be the [[MirrorMatch Mage-Sisters]] themselves]]. During all of this, the frame rate can sometimes lag, making things even tougher. And what’s more, [[spoiler:to get the Happy Ending, you must beat this boss with 100 Friend Hearts collected, and if you don’t have 100 Friend Hearts, time to go back to previous levels to get the Friend Heart count to 100 and then fight them again.]]
* The TrueFinalBoss, [[spoiler:'''Void Soul''']], takes an extreme difficulty spike from his standard form. First off, this form releases more shockwaves at slightly trickier patterns, making it hard to jump over. The effects of his blade attacks are also larger and harder to dodge. The second phase is more or less a BreatherBoss, and the third phase abuses some rather nasty beam spam near the end. [[spoiler:However, once you reach the actual Soul form, things REALLY get tricky. He opens with an unfriending wave which will force you to either stop fighting to dodge your own allies and try to either refriend them or defeat them. The boss splits himself into four large segments and bounces around the room erratically, flattening anyone it lands on.]] Eventually, it begins rapidly spamming some highly damaging beam attacks which require fast reflexes to avoid.
** You thought [[spoiler:Void Soul]] was hard? Go to [[spoiler:Soul Melter EX]] and say hello to [[spoiler:'''Void'''.]] The first phase and third phase [[spoiler:have air shockwaves, meaning you have to be careful with your jumps.]] In addition, the third phase [[spoiler:gains MORE Master Crowns, going up to four, meaning more laser beams, even ones that require you to move in the other direction or take damage. And the spears it throws onto the battlefield? They now send out more shockwaves, causing everything to get hectic.]] And after you beat the third phase, [[spoiler:Void reveals itself, pulling out a ''VideoGame/DonPachi''-level BulletHell followed by even more laser beams than ever]]. If you are on low health when you reach this point (and you ''will'' be), say goodnight. Although it no longer has [[spoiler:small clones that inhale players or unfriending waves to turn your teammates against you, that doesn't make this part of the fight easier, what with the upgraded attacks and all. Although the horrid [[ElectrifiedBathtub electrified water]] doesn't return, it ''does'' slow you down]]. In addition, it gains [[spoiler:moves from final bosses of years past: [[VideoGame/KirbyAndTheAmazingMirror Dark Mind]]'s laser beam/reflecting mirror combo; [[VideoGame/KirbyCanvasCurse Drawcia Soul]]’s strategy of approaching from different directions [[PlayingWithFire while on fire]], and BeamSpam that puts Void Soul to shame. Once you reach the point where it ''solely'' uses the above three attacks, ''good luck''. If you somehow endure all of that and tear Void apart, you unlock the ability to give Kirby his classic look from the main menu.]]
* Almost forgot about [[spoiler:Morpho Knight]], didn't we? [[BreatherBoss What a joke he was.]] Not so with [[spoiler: his upgraded version, '''Morpho Knight EX'''. Instead of standing around letting you attack him, ''he's'' the one on the attack, [[TheBerserker not stopping until either you or he go down]]. Furthermore, his relatively slow attacks are upgraded to the point where it's near impossible for any AI-controlled teammates to dodge, whether it be through gravitational whirlwinds or more range]]. Oh, and in [[spoiler:Soul Melter EX, he comes between the aforementioned Mage-Sisters and Void]]. Let's just say your death is pretty much assured.