What are all the NPCs that mention shinies?

Question

And what do they say about them?

Comments

In Pokemon SM and USUM, there is a box that says in the office building on the second island up the stairs there is a punk character who says, "the odds of encountering a shiny Pokemon is 4000 to 1!"
Hope this helps!

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This is definitely not a complete answer.

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It was just one answer

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He said "all", Rydeli.

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theres a dude in a pokemon center in s/m/us/um that battles you with a shiny exeggute