The serpents (大蛇, literally big snake in Japanese) vary in color, depending on whether they are being controlled by the Prince or not. If the serpent is black, it is being controlled by the Prince. If the serpent is white, it is moving by its own free will. When they die, their bodies harden, turn transparent crystal and heave water.
The serpents have a shared consciousness with Mitama, the serpent who lives near the Shigeka Family residence. They all have names related white the color white.