You can't catch Flaafy, but you can catch Mareep at the Valley Windworks.
No it is only avalible in Gold/Silver.
with a pokeball ;)
You cant catch Articuno in Pokemon Crystal, only in Blue, Red and Yellow. But i am not sure about that.
no.
You can only catch Zapdos in Crystal by cheating. otherwise it is not in the game
I wouldn't. I'd catch your stupidity.
Um...Ampharos is the evolve form of Flaafy...and Flaafy is the evolve form of Mareep -...-
Flaafy will evolve into Ampharos when it reaches level 30
you don't catch articuno in crystal but you can get one from red, blue or yellow.
catch it in the wild
You cannot catch Mewtwo in Pokemon Crystal, but you can trade it from a Pokemon Red or Blue. Hope this helped :)