Blue GrubTub Fungus

(Blue) Grubtub Fungi are a type of Main Collectibles in Star Fox Adventures. Though the EarthWalker's favorite food, they are usually too hard for them to catch. In appearance, they are large, blue mushrooms. They are fed to Tricky, filling the Tricky Energy -meter, so he is able to perform various commands, like Find and Flame, which for one deplete the Tricky Energy -meter. If the meter runs empty, Tricky will not follow Fox's commands, because of his hunger. Grubtubs are found all over the planet Sauria, and can also be bought in ThornTail Store, though for a very steep price, considering how easy the Grubtubs are to find. Fox has to stun the Grubtubs with a hit from Krystal's Staff before they can be collected, since they tend to hop around trying to avoid being captured. Fox can carry a maximum of 15 Grubtub Fungi at a time.

There is also a white variety, called White Grubtub Fungus, which seems to have some kind of healing properties.