Not sure how that works or whether Kirby actually gains Buu's abilities in bulk (i.e. power, speed, and ki blasts).
He wouldn't adjust to Buu's level of power even if he managed to inhale and absorb some small fragment of Buu (and absorbing Buu as a whole would be utterly impossible even if Buu
wasn't absurdly beyond Kirby's level of power, considering that Kirby can't even inhale ordinary miniboss type enemies from his own games without defeating them first -- Kirby's normal inhaling power is limited to things roughly his size or a little bigger, and only things much less powerful than Kirby himself. The pumped-up "Hypernova" inhaling ability wouldn't even help much against Buu, considering that in the game he used that in, he struggled just to absorb and redirect a single big blast from the final boss and didn't even begin to inhale the actual boss.)
But anyway... yeah, "absorb part of some really powerful guy, suddenly become super powerful" isn't how Kirby works. The abilities Kirby gains are the same no matter the level of power of the enemy he gets them from, all that changes is the nature of the ability itself. Fire ability from a normal enemy and Fire ability from a miniboss and Fire ability from a major boss's fireballs are exactly the same in every single game; he doesn't get a stronger Fire power from the minibosses or boss fireballs, just same ol' Fire ability. So absorbing a bit of Buu would not increase his power any more than absorbing anything else would, it would just give him some degree of Buu-like abilities (not necessarily anywhere near the level of Buu's, though -- as with the "regular enemy/miniboss/boss" example above. Kirby may gain Buu-like powers but he won't automatically be as good at using them as Buu is, and might not gain every ability at all. Maybe he'll only pick up the stretchy body/regeneration thing, since he absorbed a chunk of Buu goop rather than one of Buu's ki blasts or magic attacks or anything like that. Plus, Kirby's power copying doesn't actually work like it does in Super Smash Bros., where every single character he absorbs gives Kirby their own unique copied-ability form -- copied powers are generic like fire, ice, spark, hammer, sword, etc. rather than being specific to what he absorbed. So there wouldn't be a "Buu Kirby" if Kirby managed to absorb a chunk of Buu... more like "Rubber Kirby" or "Candy-Beam Kirby" or something like that.)
Plus, there's the fact that going by the anime filler, inhaling a chunk of Buu would end
very badly for Kirby. Kirby is no Vegetto -- once Buu decided to pull the "destroy you from inside" trick there would be no way for Kirby to counteract it. He'd be torn apart in seconds, pretty much. (And yeah, the filler episodes/scenes of DBZ may not be "canon," but a filler episode ranks higher than a freaking
minigame at least, and from what I've heard the Death Battle guys apparently took the Kirby Super Star "Megaton Punch" minigame seriously and assumed Kirby actually had the raw physical strength to split a planet... despite the game actually measuring the power of each punch in megatons, and those amounts not being anywhere near planet-splitting, topping out around 200 if I remember right. And even though in any other game, the most impressive thing Kirby ever managed was blowing a hole through the moon, and that wasn't with his own power but with the Star Rod giving him a boost. There's two possibilities there: Kirby's strength randomly jumped to absurd Superman-on-a-"the-writers-wanted-him-to-show-off-his-super-strongness"-day-esque levels for one minigame before dropping back down to its normal level for every other Kirby game after that, or the minigame was just a minigame and wasn't ever meant to be interpreted as a serious measure of Kirby's strength. Should be pretty obvious which one of those makes more sense...)
, its just like saying that any nintendo character could beat anyone from DBZ, and, it bothers me,
I just want to inform
