Signature colour-pale blue
Signature weapon- Staff
Symbol-Eight sided Snowflake
Core body temperature is between 20-10 degrees Celsius. Around 20 when not emitting or controlling ice, decreasing when they are using ice. Skin temperature on average 13 degrees normally, with extremities such as nose, feet, ears and fingers going below ten.
When using their power it goes down to around 3 or 0 degrees Celsius.
As a result their enzymes have adapted to have their optimum temperature to roughly 20 degrees. This is only shown in Descendants, normal descendants have a normal enzyme optimum temperature.
It is instinct for many Descendants of Frost to freeze water when they come into contact with it. This doesn't happen if the liquid goes straight into the mouth without touching the lips. Typically blood does not freeze as it is warmer and thicker than drinking water, it will freeze eventually, but usually the injury is dealt with or protected before the blood gets a chance to freeze.
All Descendants have the potential to use both ice and wind in their genes, but often only one is expressed unless the correct conditions are met. These conditions can occur in times of extreme stress or having physical contact with Jack's staff. In this context Jack's staff is a conduit for his power rather than the source, so his Descendants can use it to some extent.
If Wind likes them, then they can use Wind to travel around whether or not they can control air. This is an extremely rare privilege, one that not even Jackie has.
Those who control ice do so by drawing water from the air and freezing it, or by utilising already existing ice snow and frost.
Those that can manipulate air can also hear, and if they so wish, talk to, leaves.
They are descended from Jack's sister and any possible cousins he may have had. Most Descendants share similarities to Jack's appearance before he died, but occasionally you see a Descendant of Jack Frost with pale blonde hair and blue eyes.
You are unlikely to find a Descendant of Jack Frost anywhere near the equator, their family lines sticking to the Northern Hemisphere. Some are found south of the equator, very far south. This is rare however.
Jack Frost Book Spoilers!
Nightlight update
Appearance-Can now include green and hazel eyes
Powers-Photokinesis, can cause their bodies to glow and send out blasts of energy. Not shown at birth, has to be explained for a Descendant to know they can use it. It's very limited, but can be useful when fighting against the Descendants of Pitch. The light produced is painful to them.
The ease of production and power of the light produced depends on the disposition of the user. For example, someone of a naturally cheery or mischievous disposition will have an easier time producing and managing the energy, as well as it naturally being more powerful. Examples of such would be Alice Harper and James and Jacob Beck.
Following this, those of a gloomier or more serious disposition will find it more difficult to manage this power, as well as it being competitively weaker. Examples include Jacqueline Davies and Stephen Griffins