https://www.gamespot.com/articles/next-free-pikachu-for-pokemon-sun-and-moon-availab/1100-6453761/

The next free Pikachu distribution has now begun for Pokemon Sun and Moon. This week, players can get a special version of the iconic mouse wearing Ash's hat from the Sinnoh region.

Like last week's free Pikachu, the Sinnoh cap Pikachu has a Hardy nature and comes with a special Z-Crystal, Pikashunium Z, which allows it to use the 10,000,000 Volt Thunderbolt Z-Move. It also knows the following four attacks: