Zamazenta trained the Fighting Master until the master could beat any opponent. When the Fighting Master finally broke through Zamazenta’s shield, the master left to become a king.
Pokéfeature: Zamazenta cannot Dynamax.

Zamazenta’s shield is so strong that it was said to stop the ocean itself. Legends say that Zamazenta drew the channel between Kalos and Galar to keep them from fighting over territory.