Lassor is one of the old elemental gods of Blackfire, one of the few who are still worshipped since the days of the Chaos Wars. His domain is the winds and oceans, and the power of storms. He is not a fashionable deity, like the tempting gods of Chaos or the few good gods whose worship endures, but there are many who would die rather than break faith with him. Nearly all sailors are worshippers of Lassor, and constantly strive for his favor lest he swallow them all beneath the sea.

The temperment of Lassor is volatile and swift to change, and he gives very little to his worshippers while demanding constant appeasement to keep his anger at bay. He appears most commonly as a gigantic titan of the oceans, or as a fierce, tentacled kraken.