Mototsu

The Mototsu (元つ lit. Original Ones) are an ancient race, created by the Soul King at the beginning of Soul Society. Gunha Teishin calls them "the source of all races", however, this is a far stretch. While all other races (Hollows, Blanks, Arrancar, Shinigami) are believed to originate from the Mototsu, the Mototsu themselves do not possess a majority of the abilities that the other races are famous for. They are one of few races that other beings are incapable of becoming, similar to Sōzōshin. After the Shinigami had almost wiped the Mototsu out, only one remains: Gai Nagareboshi.

Overview
All Mototsu are similar to Humans and Shinigami, however, the one trait that stands out is their magenta within blue eyes. They are all similar to porcelain dolls; beautiful, slender, and androgynous. The Mototsu have unique spiritual power: it constantly fluctuates depending on their emotions, while giving off reishi patterns similar to that of the Hōgyoku. An angered ﻿Mototsu would emit an overbearing power unlike anything else in Soul Society, a power completely unrelated to Reiatsu. When Gunha had sufficently angered Gai in Tenth Release- Shinseina Kakusei, he goes on to say that his very presence felt as though Gai was trying to stifle his very existence with his power. However, when not angered, others beings will be unable to sense a Mototsu's reiatsu.