Zontan

Zontan was an Ice Warrior who, along with fellow Ice Warrior Essbur, was led by Lord Ssardak in their attempt to infiltrate the planet, Trenzalore and to destroy the Eleventh Doctor and prevent the new time war. He, along with his commander and fellow soldier, cocooned himself in ice and traveled safely through the planet's atmosphere before crashing into the snow, seemingly nothing more than a meteor. (PROSE: Let it Snow)