So characters name is still Abscelon, he's from a tribe of dwarves that live from the sea. He's missing one foot and a hand, which he replaced with equipment for fishing and swimming. In the illustration he's using an underwater breather and has a spell mark that adapts his senses to the depths of the ocean.
This creatures he's fighting are the result of a virus that's emerged from the bottom of the occean. The spread has affected his people and represents a big threat to them and all other tribes around them. They've all become allies to fight the upcoming hoard, but this time they've decided to strike first