Mother of Monsters, also known as Queen of Monters or Queen of All Monsters or MoM and mentioned as Drakath's Master is the personification of Chaos, who was defeated by 13 heroes which subsequently became the 13 Lords of Chaos, she is the major villain of the second main saga of Adventure Quest Worlds (Queen of Monsters: Ancient Evils).
She was once a woman and the creator of the Tears of the Mother, which were shed by her when she was still human. The Tears of the Mother could be used as a cure for Chaorruption. She gave up her humanity for ultimate power.
According to Drakath, the Chaos Eye amulet was owned by his father, King Slugwrath, before being passed down to him. The amulet serves as a link between its owner and the Mother. It is revealed that in order for her to be free, not only do all 13 Chaos Beasts have to be unlocked, but all 13 Chaos Lords have to be defeated as well.
She was imprisoned in the Plane of Chaos, and later comunicated to Drakath asking for help (to free her), she gave no instructions to him only gave him much power which he offered to his chaos lords consequenty increasing his power.
After being freed by Drakath, she decides she no longer has any need for him and strips him of his Chaos power, and she becomes the new main antagonist of AQWorlds from that moment onward, beginning the second main saga of the game, titled Queen of Monsters: Ancient Evils.