Fungus

Fungus is the third eternal encountered in the multiplayer act, Underworld, of Shadow Fight 2. He is one of the four bosses (along with Volcano, Megalith, and Vortex). He has a shield of  8400 points which has to be destroyed in 12 minutes and 40 seconds before challenging him.

Quotes:
"You have poisoned the land, and now my mushrooms are dying. They shall absorb your mind, and we shall all be one, human. That will be the end of your story!" - challenging the players

"My brethren have forgotten themselves playing gods. Worship makes them soft. But destruction is humanity's nature; the world will be better without you." - upon defeat

"Begone! And revel in the last minutes of your fragile lives!" - if the players fail to destroy his shield

Trivia:

 * After Butcher, Fungus is the second boss to use the Earthquake perk.