YOU...! Did you think I'd forget? The time you smashed into me with your Hi-Jump! That time I was betrayed by Helpers! Or when I was replaced by that mechanical cloud! I-I... Sniff... there's something in my eye...
~ Kracko chastising Kirby in Kirby Fighters Deluxe.
Kracko is a recurring boss in the Kirby series, as well as an antagonist in the Kirby: Right Back at Ya! episode "Dark and Stormy Knight". He is one of the most recognizable characters in the Kirby series and usually appears in a sky level.
Kracko is a giant white cloud who usually appears in sky levels. He is most often fought in his iconic full form that closely resembles a puffy cumulus cloud, but is sometimes encountered in his premature form, known as Kracko Jr. Kracko usually summons creatures that are cycloptic such as Waddles Doo and Flamers. He would appear in levels that are based around skies. The reason is when there a sky, there is always Kracko. He never gets permanently defeated, this is due to the fact that there are always clouds in the sky.
Super Smash Bros.
Kracko appears in Super Smash Bros. Brawl as a trophy and in Super Smash Bros. Ultimate as a primary grab type spirit, whose ability increases electric attacks. His spirit battle is against King Dedede and two Pikachu, where only Dedede is required to be defeated.
Kracko is a monster made of clouds with 11 to 16 golden spikes surrounding his perimeter. He has one light blue eye in the center of his body. In almost all depictions of Kracko, the top of his cloud is a light blue, and his bottom is light pink.
Kracko is the third most recurring boss in the series behind King Dedede and Whispy Woods, appearing in every main installment with the exception of Kirby 64 and Kirby's Return to Dreamland.
In Kirby Star Allies, Kracko has an alternative form called Twin Kracko, used when he enters his second phase and generates a duplicate of himself.
In Heroes in Another Dimension, he has a parallel counterpart. This Parallel Kracko has the same design elements as his normal counterpart does, but is more menacing, with a yellow eye and a black body. His duplicate also appears with him during his first phase, and they merge during his second phase to increase his power, whereas Kracko generates his duplicate upon entering his second phase, instead of swallowing it.