"The lord of Suffering, Auroch, is poised to spread his evil throughout the world."
Auroch, Lord of Suffering
Auroch, Lord of Suffering is the main villain in Tower Keepers.
The tutorial in the beginning of the game offers a brief depiction of Auroch as the leader of the world's evil forces. He is responsible for the destruction of your village and the driving force behind the main conflicts of the game.
However, after the tutorial, Auroch mysteriously disappears, never to be seen again. It is possible that the developers planned to integrate him further into the story, possibly as a final boss, but there are currently no other appearances or references to him anywhere else in the game.