Name: Sunshiro
Japanese name: 白い太陽
Sex: Male
Breed: Unknown

Sunshiro was the leader of a pack near the area of Tokyo. He found the Borzoi brothers; Rocket, Jet and Missile abandoned in the mountains and took them in for care. However, Sunshiro was overthrown by the Husky brothers Miki and Hidari. They took over the pack and tormented the Borzoi brothers every day.

One day, Sunshiro had had it with Miki and Hidari and he begged them to hurt him instead of the young Borzois. Hidari and Miki accepted and killed Sunshiro. Before he died he pleaded the Borzoi brothers to live a life with a purpose.