A skeletal serpent, soaring on wings of snowpack. With a simple spin of its body, it gives rise to icy whirlwinds that gnash and rend all before it.
Sound imposing? Bust those wings and it's just an[sic] snake with arms.
That doesn't mean it's entirely toothless on the ground; it can still burrow beneath Sora and his buddies and stab its tail upward. When you see it dive, look alive!
After being expelled from the top of the mountain by Larxene's gust of wind, Sora, Donald, and Goofy soon find themselves trying to out-sled an avalanche coming after them. Three Frost Serpents chase after them and are destroyed. New Frost Serpents then appear, knocking the heroes down the mountain.