How did Wario meet those characters from Wario's Woods?

CM30

Diamond City Mayor
Diamond City Leader
#1
They're never mentioned before the game, never appear since and never get anything resembling a backstory at all. So who are they?

Who are these random individuals you battle in both versions of Wario Woods?

https://www.spriters-resource.com/snes/wariowood/

And what do they have to do with Wario himself?