History ThatOneBoss / Kirby

* '''Kracko''' is an extremely difficult and annoying boss, especially during the second phase of his fight when you have to deal with Kracko raining lightning, launching a giant electric ball, launching dozens of electric balls, and charging at you with electrified spikes.

* '''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]].

** '''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.
* 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 stages to get the Friend Heart count to 100 and then fight them again.

** '''Phantom Sillydillo''' is no better, as it can actually trap Kirby in the cage if you attempt to fly over the initial jump sometimes, 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 at the start of the third phase.

* '''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 encountered in Forgo Zone, you're only given Tornado and Needle for the first half of the battle, which doesn't really help much.

* In the original Wii version, '''[[TrueFinalBoss Magolor Soul]]''' had a few new tricks up his sleeves, but ultimately wasn't that much more challenging than his normal-mode self, even in the [[BossRush True Arena]]. The same can't be said for his rematch in the True Arena in ''Deluxe'', however. Here, ''all'' of his moves have been significantly buffed to the point where they wouldn't be out-of-place in a BulletHell [[ShootEmUp shmup]], and not only were his Super Abilites buffed as well, but two ''new'' ones were introduced to correspond with Kirby's new copy abilites[[note]]Sand and Mecha[[/note]]. Even if you're a veteran player, you'll find yourself praying that you enter this fight with a [[CheckpointStarvation full health bar...]]

* Contrary to his status as one of Nintendo's iconic {{Warm Up Boss}}es, '''Whispy Woods''' is a menace in Extra Mode. While his attack pattern is largely unchanged, the big difference is that most of his apples have been replaced by Gordos, which deal three damage out of a maximum of six health in this game.

** In a June 2022 interview with ''Nintendo Dream'', [[WordOfGod Shinya Kumazaki]] admitted that members of the development team often raised complaints about Sillydillo's difficulty... including Kumazaki himself. You know a boss deserves to be on this list when ''the people who made the game'' wound up finding him too tough!

* '''[[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]]. 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.

* 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. Oh, and if you bring an ability that burns clouds, like Fire or [[InfinityPlusOneSword Triple Star]], you will most likely destroy the ground you're standing on and fall to your doom. 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.

** His otherwordly counterpart '''Fiery Puffer''' is definitely a huge step up in difficulty as Magolor (at the point you encounter him). Since you probably won't have a fullly upgraded kit, you probably won't have the luxury of levitating for long periods of time unlike Kirby (said battle is significantly easier when Kirby fights him due to this). This means that you have to be extremely precise when dodging his attacks and rely on your dash attacks to dodge his rolling moves. His fire breath attack in his second phase is worse, as you're given an unorthodox method for dodging his attack - ducking - something that wouldn't work against Fatty Puffer.