This event was given away to commemorate The Year of Legendary Pokémon via Nintendo Network (EU 3DS).
The gift received between Pokémon Sun & Moon and Pokémon Ultra Sun & Ultra Moon will slightly differ, in areas such as held item, level and moveset.
This Regigigas can only received on Pokémon Sun & Ultra Sun, while it is normally able to be encountered the Ultra Space Wilds of Pokémon Ultra Moon.
Format Ver.1.0.6-1, Post Updated Date:20180301_2012
Format Ver.1.0.6-1, Post Updated Date:20180301_2013