No only firered can get scyther you can find it in the safari zone.
you can find a mew mew power costume on ebay.
you can find mew ichigo/zoey mew lettuce/bridget mew pudding/kiki mew zachruo/renee and mew mint/corina on ebay!
It is not clear what "comn" means. Please ask this question again using words that make it clear what you want to know.
You do the mew glitch go to youtube and find out .
Episode 42
You have to ask your mom for it after the 4th gym badge
You cant
Ebay
They find out renee is a mew in episode 10- i must admit she's a mystreious one
you find mew at the power plant after 21 bagges
You can't find Mew in Pokémon Silver.