Torog is an ancient spirit that has been trapped in Death for millenia. He postures himself as a god, and has become the fixture of many deathcults in Life.
Torog had, many millienia ago been the necromancer known as Trecian. In those days he had been the servant of Draciat, the Dark Emperor. When the Covenant was formed to throw him down, Trecian was struck down defending his master. He refused to die however, and his spirit fled to the Eastern Kingdoms where he caused chaos for years before finally being banished into Death.
Over the millenia he spent trapped in Death, Trecian was corrupted into a malevolent bestial spirit called Torog. He became a god in Death, and began plotting his return to Life.