* Galacta Knight from ''VideoGame/KirbySuperStar Ultra'', who, despite merely being a BonusBoss for the VideoGameRemake, gained huge popularity with the fandom, particularly in the area of [[WildMassGuessing speculation]] regarding his relation to Meta Knight.
** Apparently, the higher-ups were savvy enough to pick up on this, as [[spoiler:Galacta Knight returns as a BonusBoss in The True Arena of ''VideoGame/KirbysReturnToDreamLand''.]]
* Meta Knight himself is also one, starting as just another boss in Kirby's Adventure, then being absent from Kirby's Dreamland 2 and 3 but becoming a MemeticBadass over time.
* Many of the enemies may also qualify, such as Waddle Doo and Knuckle Joe (who might both owe this to [[Anime/KirbyOfTheStars the anime]]).
* The one-shot characters from ''[[VideoGame/Kirby64TheCrystalShards Kirby 64]]'', such as Adeleine, Ribbon, and 02 have a TON of fanart for them. 02 even got a remix of his theme music in ''Brawl''. Ribbon's popularity is probably due to her [[ImpliedLoveInterest implied relationship]] with Kirby. Adeleine became a recurring character in the webcomic ''Webcomic/BrawlInTheFamily''.
* Bandana Dee, [[AscendedExtra who went from]] one-shot opponent in a ''Super Star'' minigame, to the confirmed identity of the Waddle Dee boss in the remake (with speaking parts!), to a playable character in ''VideoGame/KirbysReturnToDreamLand'', is gaining in popularity lately. Some {{Fanon}} even holds that he's the same Waddle Dee who partnered with Kirby in ''Kirby 64,'' just without his IconicItem.
** [[LampshadeHanging Hell, just take a look at his pause screen description in]] ''[[LampshadeHanging Return to Dream Land]]'' [[LampshadeHanging and the first words you'll see are "Hey, it's everyone's idol!"]]