In Pokemon Red, Green, Blue & Yellow, and Pokemon FireRed & LeafGreen, player's encounter a literal Ghost, the undead spirit of a Marowak, that was killed by Team Rocket as it tries to protect it's young Cubone, and serves as an obstacle, stopping you from reaching Mr. Fuji at the top of the Lavender Tower, if you did not have the Silph Scope to unmask it's identity. (yet oddly allowed Team Rocket Grunts to climb up there to stop you and hold Mr. Fuji hostage) These 2 entri