Karin Kokubu is an artistic gymnast, as well as the superheroine Tonde Burin. Originally, her superheroine form was a superpowered pink piglet, but after collecting 108 pearls in her superheroine adventures, she was granted her wish to transform into a different version of her superheroine form. In her new heroine form, she wears pink tights, a pink long-sleeved gymnastics leotard, pink shoes, and a red cape.

(Karin sees a monster attack in the city) OK time for me to transform! (She takes out her transformation pig snout) Ba Bi Bu Be Burin! (She began to transform into Tonde Burin. Her clothes disappeared, as her pink tights, pink shoes, and pink leotard formed around her body, followed by her red cape)