Bill

Bills  (also known as Notes ) are a kind of money in the Luigi's Mansion series that adds to the players "G" (gold) counter. They can be sucked up and collected using the various Poltergust models seen throughout the games.

Luigi's Mansion
Bills first appear in the first installment of the series, Luigi's Mansion. They are worth 20,000G, making them the second least valuable form of money in the game after coins. They are multicolored, making them resemble Canadian dollars. These bills reappear in the Nintendo 3DS remake.

Luigi's Mansion: Dark Moon
Bills appear next in Luigi's Mansion: Dark Moon, where they take the same role as they do in Luigi's Mansion. However, instead of being worth 20,000G, they are worth 5G and are colored green, making them more resemble American dollars.

Luigi's Mansion 3
Bills return in Luigi's Mansion 3, where they act as the did in Luigi's Mansion: Dark Moon.

Super Smash Bros. series
Green Bills make an appearance in the Super Smash Bros. series' Coin Battles as the most valuable of all the coins.