This creature is a Hunter mob that can only be damaged when the player reaches a certain Hunter level.
Make sure to check the level requirements carefully before making rash decisions.
The Fungock is an aggressive melee mob that spawns in the Giant Mushrooms in Mysterium. The player must be Hunter level 90 in order to damage the Fungock. It grants 5600 Hunter experience points when killed. This mob applies Poison on hit, and lasts for 5 seconds.
Note: Fungal armor drops are not exclusive, as you can gain multiple pieces per kill.