He goes by Val. When he meets Alexander Taylor for Alex's second adventure, Val is thin. He carries a broadsword and a dagger. He encountered the Dark Shadow during an adventure and was possessed by it. When possessed by the Dark Shadow, he pretended to have a wife.
The Dark Shadow was revealed at the Tower of the Moon, when Alex confronted Val/the Dark Shadow. After Alex ripped the Dark Shadow from Val, the Dark Shadow convinced him to enter his magic bag. While he was in the bag, Alex transformed the bag into a summer breeze using magic. Whether Val is still alive is unknown.