Finally, in this section, we'll be covering pretty much everything else.
With Aether Foundation on the road to recovery, you should go visit the Aether House located on Route 15 of Ula'ula Island. Inside, head towards the room on the right side. There, chat to the helmet-wearing employee to receive a rare Porygon .
That's not all. The female employee in the opposite corner will give you an Up-Grade . If you trade Porygon while holding this, it will evolve into Porygon2. You'll still need the Dubious Disc to make it evolved into Porygon-Z, but we'll get to that soon enough...
There's a peculiar man loitering in the rest area of Haina Desert, which you can reach by following this path from the entrance: North, East. If you show him a Solrock in Pokemon Sun or a Lunatone in Pokemon Moon, he'll give you a Sun Stone or Moon Stone .
Team Skull Fashion
Are you wondering how the ne'er-do-wells in Po Town are doing? If so, don't be shy and go pay them a visit, especially the rapping pair in the Pokemon Centre. After listening to another relentless rap, you'll be given the option of buying a Skull Tank for 10,000 Poke Dollars.
Inside the Pokemon Centre in Seafolk Village, there's an interesting tourist that you can meet near the cafe area. He'll challenge you to a battle using his Level 55 Exeggcute. The catch is that his Exeggcute is shiny!
Anyway, this battle is super easy and mostly serves as an introduction to Shiny Pokemon, in case you've never seen one before. Sadly, the tourist won't give you his Shiny Exeggcute, but you will be given six shiny Nuggets .
For this obscure event, head for the south-most part of Poni Breaker Coast, near the entrance to the Ruins of Hope. Near the bubbling fishing spot is a pair of swimmers. Chat to them to be invited to a Multi Battle.
Swimmer Girls Kylie and Ashlyn
Show off your surfing skills and you'll receive TM98 Waterfall and TM94 Surf . The latter is kind of made redundant by Scald, but is useful in Double Battles. Meanwhile Waterfall is great for physical attackers.
Rematch with Faba
You'll find the... former Aether Branch Chief Faba chilling to the west of the north exit in the entrance area of Aether Paradise. To save him from boredom, you may as well accept his challenge for a battle.
Aether Foundation Faba
Likewise, Bruxish hasn't really learned many new tricks, besides the ability to Screech at your Pokemon. It has high Attack and decent Speed, but its other stats are somewhat sub-par. If your Pokemon are speedy and can take a hit or two, it should be a straightforward affair.
Now Alakazam is trickier. This pure Psychic-type has insane Speed and Special Attack, but poor HP and Defence. It carries Psychic and Psyshock to do physical and special damage and Dazzling Gleam to punish Dark-types. Ghost, Bug or Steel-types would be good here.
Alolan Raichu is somewhat like Alakazam, but less fast and less of a heavy hitter. But what it loses out in stats, it gains in coverage, with strong STAB Electric and Psychic-type attacks. Plus Nuzzle to cause paralysis and Quick Attack to pick off weakened targets.
Finally, his beloved Hypno loves to use Hypnosis to send your Pokemon to sleep, followed by Dream Eater to deal damage and restore HP. Never let your Pokemon stay asleep. On top of that, it has Focus Blast to punish Dark-types. Ghosts and Bugs will be invaluable.
Show Faba you've still got it in you and you'll receive the Dubious Disc . If you trade a Porygon2 while holding this, it will evolve into its final form--the bizarre-looking Porygon-Z.
Gift from Gladion
Last but not least, you can find Gladion waiting at the far end of the 2nd floor conservation area, where you fought Nihilego during the story. Listen to his story and you'll receive your very own Type: Null ! Additionally, you'll receive a stack of 17 memory disks for its evolution, Silvally, to use.
If it still hasn't clicked with you, say "RKS" out loud. Hmm, now doesn't that sound like a certain creator Pokemon? Just like that Pokemon, Silvally can change its Type--as well as the Type of its signature move Multi-Attack--depending on the memory disk that it's holding.