How To Get Scyther in Pokémon FireRed Version
Note: Since Pinsir and Scyther are Version Exclusive Pokémon; you can only find Pinsir in Pokémon LeafGreen Version, Scyther can only be found in Pokémon FireRed Version unless you decide to trade.
You Will Need:
A Coin Case to gamble/buy enough Pokédollars to obtain the prize Pokémon.
Also: Scyther/Pinsir can be found in the Safari Zone as well in Area 1. They will be at Level 23 but have a low 4% encounter rate and are difficult to capture.