Quick point about the Spirit Bomb. Only those with a pure of heart can create the bomb. It doesn't take one with a pure heart to throw the attack. So what Funkay says is correct. Goku can not create the attack as a Super Saiyan because his heart becomes full of rage as a Super Saiyan. But back to Kirby. I'm with Super Awesome on this one. It just boggles the mind that some people think that Kirbys can defeat the strongest Anime/Manga characters in existent. I've said it countless times, Kirby main hope relies heavily on stealing Goku's powers. With Goku's light travel like speed, I find it almost impossible for Kirby to do such a thing. Does Kirby have the ability to sense Goku's presence? No he does not, making the fight on his part that much more difficult. Goku can increase his power and speed 10 fold on the drop of a dime if he needed to. Kirby can not cope with this, you can not defeat what you can not catch. If the instant Kamehameha isn't enough of a surprise to defeat Kirby. Goku knows a little maneuver called the Solar Flare. He can use this effectively blinding Kirby, I've also pointed out that Kirby has no means of sensing Goku's presence so all Goku needs to need is create an energy disk, slicing Kirby in two. He can't protect himself from something he does not see coming. Even Sucking in the attack would prove to be fatal, if it comes in contact with him he is doomed. Perhaps the afterimage to throw off your opponent? Goku knows more than just the Kamehameha. Then there is the whole "oh Goku doesn't kill". Well he did pull of the instant Kamehameha on Cell without knowing of his regeneration ability. So in Goku's mind, Cell was dead at the moment. He also took Buu's life with the Spirit Bomb. Buu was then reborn as Uub. Not to mention he kill one of Babidi's henchmen,Yakon. Goku is capable of taking a life, he would rather not to, but if it came down to it, he has no choice. This just isn't a logical fight. Goku would simply overwhelm Kirby. If Goku can go toe to toe with Buu,(let it be known Goku had the strength to beat Buu, however he let the fight drag on so Vegeta could have a chance)an indestructible monster and come out on top then I highly doubt somebody like Kirby can topple him.