Hero TV considers her to be the Idol Superstar of the hero world. Her costume includes crystal nails and freezing liquid guns. It also includes advertising for Pepsi NEX, a zero calorie Pepsi available in Japan developed by Suntory. Early in the show, Karina becomes unsure of her direction as a hero, claiming she had only become one as a stepping stone to her ambition for a singing career. Kotetsu speaks with her following one of her piano performances, urging her to do what makes her happiest.
