In stage 5-5, using Kine and the spark ability in one of the dark rooms will reveal a picture of a orca in it. The image bears a strong resemblance to the boss Acro from Kirby's Dream Land 3 and Kirby 64: The Crystal Shards. However, as Acro is never seen in-game, this may hint that he was originally intended to make an appearance but was scrapped and moved to later games. He can also be seen on one of the proposal documents of Kirby's Dream Land 2 in Kirby's Dream Collection.