|First Appearance||Project Exonaut|
Kylmyys is an icy cold world almost covered with ice, most in the form of large glaciers. Snowstorms appear from time to time. Necrofriggians live in cities inside the deep ice caves of glaciers and, because of that, many people thought for years that the planet was uninhabited. The temperature there will always change. Manideer commonly vacate either here or Khoru due to the cool weather conditions they so very much adore.
Alien arena contest
Kylmyys is an arena used in the Alien Arena Contest.
Ben 10: The Omniverse Wars
Kylmyys is part of the Shiver Region of the Omniverse in Ben 10: The Omniverse Wars.