These mushrooms are like the Super Mushroom, except size is even more giant. Waluigi used it on a Gravity Block, and it went pretty well. Tons of these were the creation of the Mushroomverse. These things come in quite good hand when it comes to Goomboss, Mario and Pac Man both experienced large power with this. Especially Pac Man, he was too tough that Goomboss had to shrink him.