Her function is to guard the Swamp of Peace, a sacred relic that retains the balance with the MU environment, blocking it from succumbing for the malevolence that lurks further than. The famous monster Medusa has dominated the Swamp of Calmness because historical periods. First introduced in Period 5 https://simonowbgj.blogdon.net/not-known-details-about-boss-medusa-mu-online-51809062