Between November 9 and November 30, 2018 players will be able to get Ash Hat Pikachu from the Hoenn, Sinnoh, Unova, Kalos, and Alola regions.
To get Pikachu via a password:
Open your Pokémon Ultra Sun or Pokémon Ultra Moon game.
Select Mystery Gift on the main menu.
Select Receive Gift.
Select Get with Code/Password, then Yes, then Yes again to connect to the internet.
Enter one of the passwords listed below.
Watch as Pikachu arrives in your game.
Speak to the delivery person in any Pokémon Center to receive your Pikachu.
Repeat steps 2–8 to receive the other Pikachu.
Be sure to save your game.
Password: LETSGOPIKACHU06
Level: 6
OT: Ash
Gender: Male
Ability: Static
Nature: Hardy
Moves:
Thunderbolt
Quick Attack
Thunder
Iron Tail
Password: LETSGOPIKACHU09
Level: 9
OT: Ash
Gender: Male
Ability: Static
Nature: Hardy
Moves:
Thunderbolt
Quick Attack
Iron Tail
Volt Tackle
Password: 13LETSGOPIKACHU
Level: 13
OT: Ash
Gender: Male
Ability: Static
Nature: Hardy
Moves:
Thunderbolt
Quick Attack
Iron Tail
Volt Tackle
Password: LETS17GOPIKACHU
Level: 17
OT: Ash
Gender: Male
Ability: Static
Nature: Hardy
Moves:
Thunderbolt
Quick Attack
Iron Tail
Electro Ball
Password: LETSGO19PIKACHU
Level: 19
OT: Ash
Gender: Male
Ability: Static
Nature: Hardy
Moves:
Thunderbolt
Quick Attack
Iron Tail
Electro Ball
GameTama 