Gold Greenies are very similar to Greenies except they are golden in color.
Gold Greenies, unlike all other ghosts in the game, spend their time actually trying to get away from Luigi rather than attack him. This is an exception in the Secret Mine mansion where two Gold Greenies attempt to attack Luigi with hockey sticks. Gold Greenies have a total of 20 HP which is the double amount from a regular Greenie. Whenever Luigi manages to vacuum up a Gold Greenie, he will be award with a lot of money. If Luigi doesn't catch them up in time, they will fly up and away.