The most well adjusted of the post mortem members of Team Nightmare, Krystal was originally a normal Snorunt, playing the violin in the school band. However, the bus accident released so much energy at the time of her death, that she evolved without the need of a dawn stone, changing into her 'adult' form of Froslass.

However, she didn't come out of this disaster without some mental scaring - she's a little bit on the gothic side (which is hard to pull off when your naturally made out of snow and ice), and has given up the violin for an electric guitar, which she focuses her torment through.

She is the effective leader of Team Nightmare, and most of the members look to her in times of confusion or trouble. She takes this in stride, though, as she flits along, her long, snowy kimono-like tail drifting below her.

Like the others, she was adopted by Ms Morgue after the accident, and continues her existence in Ghost Tower, watching over her sisters, and rocking out with her Team whenever possible.