After defeating all the
Island Trials on a given Island, you must first defeat that Island's Grand
Trial before moving on to the next Island full of Island Trials. Each Grand Trial is nothing more than a
Battle, but with the Kahuna of each given Island. They are among the best trainers in all of
Alola.
Grand Trials
Grand Trial #1: Hala
After completing Captain Ilima's
Trial, once you return to
Iki Town,
Hala will challenge you to your Grand Trial. He is a Master of Fighting Type Pokemon, having a Level 14 Mankey, Level 14 Makuhita and a Level 15 Crabrawler with Fightinium Z. Defeat him to earn the right of all Pokemon up to Level 35 to obey, the Fightinium Z-Crystal, and the Rider Pager. You will also get the next stamp of you passport.
Grand Trial #2: Olivia
After completing the three
Island Trials on Akala Island,
Lillie will ask you to take her to the Ruins of Hope. Once there,
Olivia will challenge you to your Grand
Trial. She is a Master of Rock Type Pokemon, having a Level 26 Nosepass, Level 26 Boldore, and a Level 27 Lycanroc with Rockium Z. Defeat her to earn the right of all Pokemon up to Level 50 to obey, the Rockium Z-Crystal, and your next passport stamp.
Grand Trial #3: Nanu
After completing the two
Island Trials on
Ula'ula Island, right before you leave the island with
Gladion,
Nanu, the Kahuna of Ula'ula Island, will challenge you to your Grand
Trial. He is a Master of Dark Type Pokemon, having a Level 38 Sableye, Level 38 Krokorok, and a Level 39
Alolan Persian with Darkinium Z. Defeat him to earn the right of all Pokemon up to Level 65 to obey, the Darkinium Z-Crystal, and the next stamp on your passport.
Grand Trial #4: Hapu
After arriving on Poni Island, you will quickly find that there is no Kahuna on Poni. The previous one was
Hapu's Grandfather, who recently passed away, and Tapu
Fini has yet to pick another one. However, after going with Hapu to the Ruins of Hope to request for another Kahuna to be chosen, Hapu herself will become the
New Kahuna. She will finally
Battle you in front of
Vast Poni Canyon.
She is a Master of Ground Type Pokemon, having a Level 47 Dugtrio, Level 47 Gastrodon, Level 47 Flygon, and a Level 48 Mudsdale with Groundium Z. Defeat her to earn the right of all Pokemon up to Level 80 to obey, the Groundium Z-Crystal, and the next stamp on your passport. Defeating her will also complete your Island Challenge, which ultimately gives you the right to challenge the newly created Elite Four.