- Sun and Moon defeat Stakataka.
- Attracted by Lunala's aura, Necrozma separates from Solgaleo and attacks it.
- Phyco, the Ultra Recon Squad's captain, arrives at the Poni Altar to take Lusamine to the Ultra Megalopolis.
- Lusamine uses a Beast Ball to capture the Naganadel Phyco rode to Alola.
- Moon's Grimer is revealed to have evolved into a Muk.
- Lusamine and Phyco arrive at the Ultra Megalopolis to capture Necrozma.
- Angered by Sun's hatred of the Aether Foundation, Lusamine sends out a Nihilego and has it fuse with her.
|Spoilers end here.|
- Meowth (Alolan Form; Cent; Sun's)
- Torracat (Dollar; Sun's)
- Wishiwashi (Quarter; Sun's)
- Mimikyu (Penny; Sun's)
- Crabominable (Loot; Sun's)
- Charjabug (Moon's)
- Mareanie (Moon's)
- Muk (Alolan Form; Moon's)
- Rotom (Rotom Pokédex; Moon's)
- Dartrix (Moon's)
- Bewear (Lusamine's)
- Clefable (Lusamine's)
- Lilligant (Lusamine's)
- Lopunny (Lusamine's)
- Milotic (Lusamine's)
- Nihilego (Lusamine's)
- Naganadel (Lusamine's; new)
- Naganadel (multiple; Aether Foundation Employees')
- Zygarde (Adventures; Zygarde Cells)
- Lunala (Adventures)
- Stakataka (later Sun's)
- Solgaleo (Adventures; separated from Necrozma)
- Necrozma (Adventures; Dusk Mane Necrozma)
- Solgaleo (fantasy)
- Lunala (fantasy)
- Xurkitree (flashback)