Dave is one of the original characters of the show who has appeared in most, if not all of the episodes. He is Stephen's nephew who lives in the flat with him and his sister Molly and their friend Basil.
He is regularly shown to have a flair for business, seen in multiple episodes to be chatting with clients and buying and selling items to many different clients. Within his time in the series he had set up a media empire, which was later destroyed by Basil and Liam, imported stolen goods and even started his own TV show. He is usually addressed as a 14 year old multi-billionaire entrepreneur.
He had a girlfriend but only for one episode, called Billy Jo, who he lied to and told her that he was a famous English football player.