Gargantua Koopa Troopas are enemies in Super Mario Galaxy 2. They are a large sub-species of Koopa Troopas, who only appear in the Supermassive Galaxy. Gargantua Koopa Troopas behave like normal Koopa Troopas but are bigger. As mentioned before, they only appear in the Supermassive Galaxy, with other giant enemies. They are only found on the Giant Koopas Planet (there are only 3 Gargantua Koopa Troopas on this planet), where they just walk about. If the player touches these enemies he will lose a wedge of health. It is best to avoid these enemies, because if they walk on the player, he can get stuck between them and cannot move, making him lose all his health and die. Gargantua Koopa Troopas can only be defeated by spinning the Spin Drill on the planet into them, giving the player one Coin.