Mu has fine, stylized features. However, they accentuate the nobility, tranquility, and elegance of this high-ranking Saint. His most prominent characteristic, typical of his race, is that he completely lacks eyebrows and has two points on his forehead that evoke the Shinto priests of the Heian era.

The Saint of Aries's long, straight hair is another point worth mentioning, his straight, tied-back hair denotes his artisan and intellectual profile. Its color a soft lilac to create an almost complementary contrast with the sea of ​​yellow tones used when he wears his Golden Cloth.

Mu was walking across the snowfield of Asgard, he had known that Hilda of Polaris had been usurpated, now , he wanted to join up with the rest of his fellow golden saints and see what he could do to help both, the inhabitants and their people.