Kersti is the keeper of the Royal Stickers; she's an ancient (but youthful) sticker goddess forced into the Cutout Chaos killing game by Sinistar. She only has one line in this scene, but she's a bitter, sarcastic loner who, despite caring for people deep down, won't hesitate to rip into anything about anyone if it means they won't get attached to her.

Her voice should be high-class, aristocratic and snooty, but in this scene she is showing a bit of genuine care toward Bombette by backing up Kooper.