This POKéMON can't be caught!. In Pokémon Red, Green, Blue, Yellow, Fire-Red, and leaf-green, there is a GHOST you cannot catch in Pokémon Tower, you must use the Silph Scope to identify it.
If you attempt to use a Pokéball on it (doesn't matter what type of Pokéball), it dodges it, and a message says:
"It dodged the thrown BALL! This POKéMON can't be caught!"
The same thing happens on the Marowak ghost, even after you identify it with the Silph Scope.
I already beat Yellow, and I've put the Silph Scope in my item storage.
NOTE: THIS CONTAINS NO EDITING AT ALL!
Tags: This POKéMON can't be caught!, Pokémon, video game, Pokemon, Pokémon (video Game Series), music, battle, WonderN123, ghost, master, ball, red, blue, yellow, green