Written with the characters of "thunder" and "dog", these holy hounds are venerated as protector spirits. Tresspassers struck down by lightning on holy ground were actually punished by these creatures. Although extremely different to approach, they are fiercely loyal to their masters in the rare cases when humans have befriended them. Normal dogs fear thunder, but Raiken actively marshall it to protect their masters. Every Raiken has a mate, and their true power is revealed when they are paired.