Isaz

Isaz (イサドズ, Isazu), known as the Sheer Cold Dragon (シアー寒い竜, Shiā Samui Ryū), was a well known Dragon from the times of war 400 years ago for his assisstance towards the Humans and his kind and pacifistic nature, and was whole heartedly against the war.

During the war, he recieved two major injuries, one to his right eye and the other to his neck, forunately he survived, but lost the ability to speak ever since, which is where his title The Dragon's Absent Roar (竜無咆哮, Ryūmuhōkō) came from.

After the war ended, Isaz fell in love with a human female, and used Compact Regression in order to become human and marry her, however, his wife was infertile which is why he had no children, and many years later, after his wife died of old age, Isaz continues to live and currently wanders Earthland, though the fact he was once Dragon is known to only few.

Ice Dragon Magic
Dragon Magic (竜魔法, Ryūmahō):

Ice Dragon Magic (氷竜魔法, K'ōri no 'Ryūmahō):

Trivia

 * Isaz's appearance is based off of Matoba Seiji from Natsume Yuujinchou.
 * Isaz is the reconstructed Proto-Germanic rune which means "Ice".