How early can I get him?

Trainer's School

>>29885536
About an hour or two in. Real early.

I encountered one in Hau'oli City.

>>29885536
Really early in the grass next to the trainer's school

He's been my bro this whole fucking play through.

You get tm thief after you get the ability to smash rocks and I went back to get that nigga a black sludge.

>>29885664
Where do you get black sludge?

>>29885699
5% chance to spawn on alolan grimer