A song of ice and fire ice dragon

While several publishers say The Ice Dragon is set in the same world as A Song of Ice and Fire, the story does not match the known history of ASOIAF, and Martin has refuted a connection on his Not a Blog.

The largest and oldest dragons were Vhagar, Vermithor, Silverwing, Dreamfyre, Meleys, Caraxes, and Syrax. Younger dragons still large enough to be ridden to war were Seasmoke, Sunfyre, Tessarion, Vermax, Arrax, Tyraxes, and Moondancer.

In Season 7, Viserion is killed and then raised back to life by the Night King. Viserion, called an "ice dragon".

Viserion, the ice zombie dragon, was one of the Night King's most valuable assets in the Battle of Winterfell.