Real leaker here.
He's going to appear in USUM. You'll battle him a few times throughout the story, and again post-game. One of them is even a double battle Lillie with Lillie as his partner using her Alolan Vulpix.
>>33400783
Wow thats it? Your a terrible leaker
>>33400783
it's retarded enough that i could see game freak doing it
>>33400783
Thanks based leaker