You can lend a hand in Pokemon Sun & Moon's 7th Global Mission by

Pokémon Sun and Moon Walkthrough - Part 33: How to catch/obtain COSMOG! (Post game)

Pokemon Sun and Moon - Gameplay Walkthrough Part 8 - Hala's Melemele Grand Trial! (Nintendo 3DS)

Pokémon Brilliant Diamond and Pokémon Shining Pearl Trainers Guide, The Grand Underground, Official Website

Toy World Magazine January 2022 by TOYWORLD MAGAZINE - Issuu

Modern Day (Page 27)

Pokémon Sun and Moon Second Global Mission Revealed

Pokémon Sun & Moon - Trial Captains

Pokémon conspiracies and mysteries!

Pokémon Brilliant Diamond and Pokémon Shining Pearl Trainers Guide, The Grand Underground, Official Website