Not sure if it has ever been discussed.
Although The Kirby company has been making vacuum cleaners for nearly a hundred years.
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As most have said, Kirby Super Star is the best Kirby. I'm not really a fan of his gimmicky titles like Epic Yarn or Canvas Curse. I'd love to see a large-scale game like Super Star for the Wii U.
Very true. Also I tend to refer the lovable bright pink Kirby as a "pink puffball", "marshmallow" or even a "vacuum-cleaner." Personally I loved Wii's Epic Yarn and N64's The Crystal Shard, they are my favorites. I did play a lot of Kirby in my younger days. While Superstar was great I still liked both Epic Yarn and The Crystal Shard. N64's Crystal Shard is the Kirby game used for future Kirby games modern references like Yarn. So I really think if you like SSB64 and Kirby you should try The Crystal Shard.
Kirby (character) on Wikipedia.
Kirby (character) on Wikia.
Kirby's video game series information on Wikipedia.
Finally here is the best part. Kirby or 'Popopo' in Dream Land's Wikipedia. Please read the Development part as this should answer some of your questions about Kirby. :]
Kirby sucks
get it
Smash Bros is essentially Kirby Super Star with non-Kirby characters. The gameplay is nearly identical. Move to walk, double-tap move to dash. Your attacks and abilities change depending on speed and direction, but are primarily controlled with a single button. Kirby Super Star even features Master Hand (or a boss very similar, who even uses several of the same attacks, Wham Bam Rock).