Soma (ソーマ) is the head of the Soma Familia.
Soma has long black hair with bangs that are long enough to cover his black eyes, concealing most of his expressions. He is usually seen wearing his work outfit.
In the Light Novel he is described as being of average height with slender limbs and almost delicate in appearance with long, unkempt hair partially hiding his face. His clothes are described as a loose fitting robe with its sleeves and hem dirtied with soil.
Soma is infatuated with a passion for brewing wine and is rarely seen or interacts with anybody. Loki mentioned that he is annoying and not someone easy to deal with. He showed no concern for his familia members as he saw them as children who easily succumbed to the Soma. His heart soon changed when Lili was able to hold out against his divine wine.