Everyone

A white feather drifts in the stormy wind. Marionette and Ennard follow the fearther and it transforms into a beautiful girl. Skin white as snow, white hair, a cat-like tail, two short horn-like tufts on top of her head, and underneath them there are larger ears.

Hikari(Light) is that girl. The animatronics and the other game characters take care of her, and figure out her powers. Whenever she runs, walks, jumps or any movement, white energy comes off her.

A black feather is blowing through the wind. It lands at Bowser's castle. This is Kage(Shadow). Like Hikari, whenever she does any movement black energy comes off her. She is raised by the villains, and do fun and stupid things with them.