Truffle Troubler is a boss-fight in the video-game Lunar: Silver Story.

A large, exotic-looking monster that seems to be a mix of Lovecraftian elder-god and alien fungi this disturbing monster acted as a guardian of sorts and an obstacle to the heroes during their quest in the Cave of Trials.

Truffle Troubler existed mainly to test the heroes strength but was presumably aggressive in nature, like most monsters, and attacked them without provocation and without mercy - eventually the heroes defeat the monster and presumably kill it.