Technically yes and no a GHOST can't be captured but with the silph scope you can reveal the Pokemon's true identity which is gastly which is a ghost Pokemon so that makes sense.
You can't catch one at all in Emerald. You'll have to trade one from FireRed/LeafGreen.
shadow ball is the strongest ghost TM
You cannot catch the ghost in the Pokemon Tower until you reveal what it really is.
HOW AM I SUPOSED TO KNOW ASK SOMEONE ELSE
yes its really a Pokemon only you need a special item to see them once you have it go back and the ghost is now a Pokemon
NAOOOOWWWWWWW
Because seeyah
246 exactly
nooo
Dark attacks. I suggest something common such as bite which a lot of the early pokemon can learn
Haunter.... There isn't that many ghost types in firered besides the Gastly line which you can find in Lavender Town's Pokemon Tower
You need the Silph Scope from the Rocket base in Celadon City, that will automatically reveal the Lv 30 ghost as a Marowak.