These are classic characters from some of Kirby's
most memorable adventures, like Rick,
Kine and Coo from Kirby's Dream Land 2 or Meta Knight.
The first — and
most obvious — gameplay addition is that Dream Land 2's animal friends (Rick the Hamster, Coo the Owl, and
Kine the Sunfish) are joined by three additional friends: Chuchu the Octopus (who looks more like a female Kirby), Pitch the Bird, and Nago the Cat.