Kirby's Dream Land Easter Egg - Hal Laboratory Heroes

The boss of Castle Lololo (stage 2) is Lololo and Lalala - blue and pink blobs with eyes, arms and legs who push treasure chests at you. Lololo and Lalala did not debut in Kirby, but were originally the heroes of HAL Laboratory's Adventures of Lolo series (Eggerland in Japan). In them you play Lolo as he tries to save Lala. Aside from the shorter names, they are identical in every way - even the way they push the chests at Kirby is borrowed from their old adventures.