Notes:

Rick, Coo and Kine has appeared in the Kirby anime series, and Kirby Mass Attack (but is only a cameo). Nago, Pitch and Chuchu are not appeared in the current age, because, they are appeared in Kirby 64: The Crystal Shards as cameo of Kirby gets the Ability "Stone Friends" with the Combination of Cutter + Stone:

So, Chuchu has never return in the latest Kirby games :(