As you travel through you journey, you will meet-up with
Hau, both your friend and Rival, on a number of occasions, nineteen to be exact. Some of these times he'll just
Talk to you or give you some items, and at other times he will be looking for a
Battle.
Hau Encounters
Encounter 1 -
Iki Town: The first
Time you will encounter
Hau is in Iki Town after choosing your Starter Pokemon. He will immediately challenge you to
Battle with his Starter Pokemon, which will always be the Starter that is weak to your Starter Pokemon's Typing. He will have either Rowlet, Litten or Popplio, at of which will be at Level 5.
Encounter 2 -
Iki Town
Festival: The next day at the
Iki Town Festival, you will again
Battle Hau, but this
Time in honor of Tapu
Koko. He has leveled his Starter by two levels, as well as adding a Level 6 Pichu.
Encounter 3 - Pokemon Lab /
Hau'oli City: The following day after, you will meet Hau again when you go to the Professor's Lab to receive your
Pokedex. He will then travel with you and
Lillie throughout
Hau'oli City.
Encounter 4 -
Route 2: The next
Time you see
Hau is for a short chat on Route 2. He will give you a few Revives and show you where the next Pokemon Center is.
Encounter 5 -
Route 3: After finding
Lillie and helping Lillie in
Melemele Meadow, you will be challenged by
Hau on Route 3. His Starter Pokemon will now be at Level 14 (still unevolved), but his Pichu has now evolved into
Pikachu and is now at Level 13. After defeating him, he will watch you
Battle Hala in your first Grand
Trial.
Enccounter 6 - Boat Ride To Akala Island: The next
Time you see
Hau will be when
Kukui takes both you and him, as well as
Lillie, to Akala Island to continue your Island Challenge.
Encounter 7 -
Paniola Town: Right as you reach Paniola Town,
Hau will appear and challenge you to another
Battle. His Starter Pokemon has now evolved into its Second Stage, being at Level 17 and holding
Normalium Z. His
Pikachu has also leveled up to Level 16.
Encounter 8 -
Route 5: The next
Time you see
Hau is when you'll first meet
Gladion. Gladion has just defeat Hau in a
Battle, and now wants to challenge you.
Encounter 9 -
Royal Avenue: Once you arrive at Royal Avenue and are to participate in a
Battle Royal,
Hau will want to join you and Masked Royal in it. He will only use his Second Stage Starter Pokemon, which is at Level 19.
Encounter 10 -
Diglett Tunnel: As you travel through Diglett Tunnel to reach
Konikoni City, you will run into
Team Skull and
The Aether Foundation. The
Aether Foundation will warn you about Team Skull, and you will end up facing two Team Skull Grunts with
Hau.
Encounter 11 - Ruins of Life &
Aether Paradise: After defeating
Olivia,
Hau will come to challenge her next. As he does this, you will be asked to meet
Faba of
The Aether Foundation, and he will end up taking both you and Hau with him to
Aether Paradise. You and Hau will encounter an Ultra Beast there, one you must defeat.
Encounter 12 -
Malie City: After defeating the Ultra Beast at
Aether Paradise, you will be given a ride over to
Ula'ula Island. Right after arriving,
Hau will challenge you to another
Battle. His Second Stage Starter is now hold the Z-Crystal that matches their typing, as well as being at Level 29. His
Pikachu has also evolve into
Alolan Raichu, now at Level 28. He even has added an Eeveelution that is now at Level 28, being the exact type that your original Starter Pokemon is weak to for a better show at beating you (
Flareon for Rowlet,
Vaporeon for Litten,
Leafeon for Popplio).
Encounter 13 -
Route 13: You will next see
Hau on Route 13, where he will say hello and give you some
Max Potions.
Gladion will then show up and question the two of you about
Cosmog, and Hau will let it slip that you two know something about it. Gladion will then tell the two of you to protect Cosmog from
Team Skull at all cost.
Encounter 14 -
Aether House: As you first arrive at
Aether House,
Hau will appear and the two of you will have to
Battle some preschoolers.
Encounter 15 -
Aether House: After completing
Acerola's
Trial and you return to
Aether House, you will find
Team Skull there looking for
Cosmog.
Hau and Acerola will help you defeat Team Skull. After doing so, you will find that Team Skull has taken one of the preschooler's Yungoos to
Po Town. Hau will remain at Aether house while you go to Po Town.
Encounter 16 -
Aether Paradise: After defeating
Team Skull in
Po Town and rescuing Yungoos, you will return to
Aether House to find that
Lillie has been kidnapped by Team Skull.
Hau will join you and
Gladion to go to
Aether Paradise, in hopes of finding Lillie there. In Aether Paradise, you will be challenge by a number of Aether Employees, some alone and some with Hau. His Pokemon team has changed quite a bit: his Raichu is at Level 38, his given Eeveelution is at Level 38, and his given Starter has now evolved into its final stage and is at Level 39 while still holding the Z-Crystal that matches its typing.
After defeating the magnitude of employees standing in your way, you will finally reach the end of the
Aether Paradise where you know
Lillie will be. As you finally find Lillie, you quickly realize that
Team Skull and
The Aether Foundation have been working together, that heads
Guzma and
Lusamine have been a Team this entire
Time.
Hau will challenge Guzma as
Gladion takes on Type: Null, while you are forced to try to stop Lusamine. But even after defeating them, the Ultra Beast will take Lusamine and Guzma to
Ultra Space with it.
After such,
Hau will pledge to get stronger. This is mainly because he wasn't strong enough to stop
Team Skull from taking
Lillie and
Cosmog in the
Beginning.
Encounter 17 -
Mount Lanakila: After saving
Lillie's Mother from
Ultra Space and defeating the Island Challenge, you will then take on the task of climbing Mount
Lanakila to the Elite Four. But right before facing the Elite Four,
Hau will challenge you to a
Battle, having also now defeated the Island Challenge. His team has gotten a lot better: his Riachu is at Level 53, his given Eeveelution is at Level 53, his
New addition of Komala is also at Level 53, and his given third-stage Starter Pokemon is at Level 54 with their Z-Crystal that still matches their typing.
Encounter 18 - End of Main Storyline: After defeating the Elite Four,
Hau will join you in your celebration back in
Iki Town. He will then join you in saying goodbye to
Lillie as she leaves for Bill in Kanto. And after that, the following day to be exact, will come to your house to tell you he is heading to train some more at
The Battle Tree.
Encounter 19 - Pokemon League
Rematch: As you rematch the Elite Four, one of the many trainers that will challenge you for the title of
Champion is
Hau. His team has gotten even stronger than before with his recent trip to
The Battle Tree, all of his Pokemon now being at Level 63: his Raichu, his given Eeveelution, his Komala, his
New Crabominable, and also his given Final Evolution Starter Pokemon that remains holding the Z-Crystal for its given typing.