Moneybags

Coin Coffers (originally called Moneybags) are enemies in Super Mario 64. Two appear only in Snowman's Land. They are money purses with their zipper undone along with eyes and feet. At first, they take the form of a regular coin, but when Mario gets near one, it transforms into a purse-shaped creature that hops around. After four hops it somehow flattens up, and they walk on the ground for a few seconds. Defeating them will earn the player five coins a piece. They are also featured in the Super Mario 64 DS remake and in Coincentration, a minigame in the same game.

Coin Coffers also reappear in New Super Mario Bros. in two levels, still called Moneybags. Here, in order to defeat one, the player must hit it with six Fireballs, stomp it six times, or using a Mega Mushroom or a Koopa Shell. For the first two ways, it gives one coin for each hit, and a 1-Up Mushroom upon the last, at which it would be defeated. They usually appear in areas with several pits, making it harder to chase the creature by these means. The minigame Coincentration also appears in this game, with more 3D-rendered graphics.

A creature similar to a Coin Coffer, a Starbag, appears in Super Mario Galaxy and Super Mario Galaxy 2. Instead of Coins and 1-Up Mushrooms, it yields 20 Star Bits.

They later appear in Super Mario 3D Land, now known as Coin Coffers. In this game, they have smaller eyes on top of their head, are round, have a lighter green color, and slightly looks like a frog's head. Coin Coffers contain ten coins. Hitting a Coin Coffer in any way causes it to drop a coin, and after five hit, it spits out the rest of the coins it contains before it is defeated. Ground Pounding one causes it to spit out all of its coins before being defeated. When hit by Mario under the effects of a Star, its ten coins are dropped in a ring shape.

Trivia

 * The name "Coin Coffer" might be a pun on "Coin Cougher".