You can't. In order to obtain a Gengar, you must trade a Haunter from another game to Leaf Green. When traded, Haunter evolves into Gengar. It's the only way. Good luck!
you can't catch a gengar. you catch a haunter then trade it so it evolves. make sure its not holding an everstone. ;)
You can't catch Igglybuff in Leaf Green. You can only see it.
You'll have to trade it from Fire red or Leaf green versionAlthough its 1st and 2nd evolutionary forms arecatchable; Gengar, unfortunately, are not found in the wild. You can only get them by trading a Haunter from Fire Red or Leaf Green, or through a GameShark/Action Replay code.
No.
leaf green only
Ghastly evolves into Haunter at level 25, and Haunter evolves into Gengar when traded.
trade it from leaf green
you have to trade with leaf green
There is no place that you can catch a Gengar and he can only be obtained by evolving Haunter via trade.
you can't get mew in leaf green you get it in fire red
u catch from fire red/leaf green thn get it in pal park u catch from fire red/leaf green thn get it in pal park
you cant catch him you have to migrate him from the GBA Fire Red or Leaf Green