Can you have gen 7 starters in other balls?

Question

In Ultra Moon, we can catch the starters from gen 1-6 in the wild, using island scan and put them in any balls we want. But I'm pretty sure that I saw a Litten, which can't be caught, in a premier ball in GTS. Is it possible?

Comments

I believe that in Japan there were "special events" that allowed them to catch a Gen 7 Starter in the wild. Since they'd be able to breed those starters, you could technically have a Gen 7 starter in almost every ball legitimately. I think the three Poké Balls that you should worry a Gen 7 starter is in are a Cherish Ball, Dream Ball, and Master Ball if they aren't Japanese, because Master balls and Cherish balls don't pass down via Breeding (and I don't think the starters have been released in Cherish balls), and Dream ball is pretty impossible. :P

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The only event I can find for the Gen 7 starters is the one with their HAs, which still had them all in standard Pokeballs. I can't find anything on a Japanese event that allowed you to catch them yourself.

Answer 1

At least in the United States, Europe, and in most parts of the world, no. This picture explains how breeding with balls work:
Source

Comments

I know how the ball works in breeding, that's why I was confused when I saw that Litten XD

Answer 2

Yes. When breeding, the female Pokemon passes down its pokeball if the male is a different species (if they are the same, it is an equal chance from each parent). For example, a male Incineroar bred with a female Mudsdale which is in a Net Ball will give birth to a male/female Litten/Mudbray in a Net Ball. This trick does not work for Master Balls or Cherish Balls.

Source: Bulbapedia

Comments

Female Pokémon cannot produce any other species then themselves while breeding. Pokéballs are only passed down if the parent that has one is the same species as the offspring. :P

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That is not how it works. The male had to be the same Pokémon the female for it to be able to pass down its ball to the offspring