Gold Koopa

A Gold Koopa, also referred to as a Golden Koopa, is a Koopa Troopa under the effects of a Gold Ring in New Super Mario Bros. 2. They look and behave much like their parent species, except that their shells and shoes are gold. When stomped on, they will retreat into their shell and give the player five coins. When a Gold Shell is thrown, a path of coins will follow it. Whenever a Gold Shell is thrown at an enemy, an increasing number of coins will be earned for each enemy defeated.

In Mario & Luigi: Superstar Saga + Bowser's Minions, a gold variant of Captain Koopa Troopa is unlocked whenever the Koopa Troopa amiibo is scanned in the Minion Quest: The Search for Bowser mode.

In Super Mario Odyssey, a Golden Koopa appears as one of the Roving Racers during rematches, replacing the purple Roving Racer. This same Koopa reappears as a playable character in Mario Kart Tour starting from the 2020 New Year's Tour, where it is known as Gold Koopa (Freerunning).

In Super Mario Party, Koopa Troopa turns into a Golden Koopa after using a Golden Drink.