Edit: I fixed the shading, it was just bugging me. d: It can be changed though if an artist feels like it.

Will add more, this is just all I could think of.
Northern Light Bears are very shy and usually stay close to what they now best. Usually are found in icy landscapes or wherever you can see the Northern Lights.
There is no difference in the sizes of the Male and Females, though males tend to have longer horns and females mature faster.
Northern Bears tend to mate for life and their offspring usually leave them by the time they have reached full maturity, which is around the age of three years. When they mate and produce little ones, they usual amount of new cubs is one and it is rare to give birth to two or even twins.
Bears of the Northern Light like to collect feathers and anything else that sparkles. They are attracted to bright colors and their pallets usually are bright and cheerful, though it has been known for some of the bears to be dark in color.
Their diet consists of berries, fish, and anything else that your bear personally likes : it varies between bears.
Humans have been known to ride the Bears of the Northern Light in the past, but from years of no human interaction, the bears are a little unwilling to be ridden on again, but it isn't impossible. It just might take awhile.
Despite their heavy looks, these bears are relatively fast and like to run and slide across ice or any slippery surface they find themselves on.
Will add more, this is just all I could think of.