Phantom Shadow

The Phantom Shadow A.K.A The Green Ghost or The Giggling Green Ghost is a villain in the Scooby-Doo Franchise.

Scooby-Doo! Where Are You?
The Phantom Shadow first appeared in the Scooby-Doo! Where Are You? episode, A Night Of Fright Is No Delight. There were actually two Phantom Shadows. They were the disguises of two no-good greedy lawyers named Cosgood Creeps and Cuthbert Crawls. The two lawyers wanted the estate of Colonel Beauregard Sanders's will, but had to get the inheritors, including the colonel's relatives and Scooby-Doo, out the mansion so they could have the fortune to themselves. When Scooby and the other heirs arrived to be read the late Col. Sanders's will, it turned out that they would all have to spend the night at his mansion in order to collect their inheritance. Creeps and Crawls then donned their costumes and proceeded to kidnap the heirs so they could keep all of the fortune for themselves. The plan went awry when they went after Scooby. Although Fred Jones's first trap failed to work, they were soon captured and unmasked. The fortune, however, turned out to be confederate money.

The Scooby-Doo Show
In the The Scooby-Doo Show episode, The Ghost of the Bad Humor Man, Scooby and the gang tackled with three Ice Cream Phantoms, who were similar to The Phantom Shadow.

Scooby-Doo and The Cyber Chase: The Videogame
Despite the fact he doesn't appear in the 2001 Scooby-Doo movie, Scooby-Doo and The Cyber Chase, The Phantom Shadow appears in the Broadway Level of the Game Boy Advance version of the Scooby-Doo and The Cyber Chase Videogame.

Scooby-Doo! Night of 100 Frights
The Phantom Shadow appears in the 2002 videogame, Scooby-Doo! Night of 100 Frights, under the name, the Green Ghost. He is one of the monsters brought back by the Mastermind and is the second boss of the game (after The Black Knight). He battle Scooby and Daphne Blake in the Mystic Manor Graveyard. There are some pretty Good hints that the Phantom Shadow would be one of the monsters Scooby would face in the game.