Kirby stars in several manga series, none of which have been released outside Japan. The longest running series is Kirby of the Stars (a rough English translation of Hoshi no Kirby), written by Hirokazu Hikawa.
Other Kirby mangas are typically one-shot comedy 4koma based on the games, and have multiple artists. They have recurring themes and running gags.
Kirby also appears in several German comics, featuring him as a detective and King Dedede as his friend. His animal friends also appear in the German comics as pets of a female Kirby look-alike with red gla$$ slippers. In one comic, he meets Lolo, Lala, and Lulu, the protagonists of the Adventures of Lolo series. The German comics were meant to let German Kirby fans know of Kirby games which would be released there.[citation needed]
Here's some stuff I found on Wikipedia, I guess the reason you don't know much about it is that none of it has been released outside of Japan.