I dont think any trainers use unown in the games.(for obvious reasons). the only way to encounter one is in the ruins of alph.
Chat with our AI personalities
go 2 the place where unown are
After collecting all 26 Unown, talk to the scientist and he will let you print out your Unown shapes.
You may need to find a trainer who has an Unown (sometimes wrongly spelled as Unknown) to complete your Pokedex. You can find someone who has it in the Solaceon Ruins.
haunter has to be traded to evlove haunter evolve into gengar in level 42
Yes,there is Lapras. You find Lapras in the Unown Cave.