In the Pokémon series, what is Palkia's hidden ability?

Palkia's hidden ability is Telepathy because it reflects its nature as the Spatial Pokémon. Telepathy allows Palkia to communicate without the use of vocalizations, using its psychic powers to establish a direct mental connection with other Pokémon. This ability aids Palkia in its control over space and allows it to coordinate movements and actions with its allies, ensuring efficient teamwork in battle.