Avatars of Malmoth are four beings from different times of human history who seek to represent dark lord Malmoth's demand for chaos, misery and destruction. Once the four beings enter the same time period, it allows Malmoth to start the Ragnarok. They play a major role in the story of Worst Hero And Villain War Ever.
Worst Hero And Villain War Ever
The Avatars are all mortals that Malmoth had interacted with through the history of humanity. Malmoth learned from The Gatekeeper that if he could bring all the Avatars together, it would bring on the Ragnarok.