List of characters in the Camp Half-Blood series
Dionysus/Bacchus - The God of Wine and Madness. He is Percy's cousin and the father of Castor and Pollux. He is the director of Camp Half-Blood where he was sent by his father Zeus for chasing an off-limits nymph though he is married. At Camp Half Blood, he is known as "Mr. D." He is shown to hate his job and have a low opinion of demigods stemming from Theseus' abandonment of Ariadne, but he has to remain at Camp Half-Blood for another fifty years (his punishment used to be 100 years, then Zeus shortened it). His children live in Cabin 12. He can be seen playing with the satyrs in camp. He appears in all the books. In The Battle of the Labyrinth, he goes out to search for the minor gods and returns at the end of the book. He rarely bothers to call the campers by their proper names, making a point of calling Percy Jackson names such as "Peter Johnson", "Perry Johannson", or "Pierre Jorgenson" throughout the series. He also calls Annabeth "Annie Bell" or "that Anne girl", regardless of the fact that she has been in Camp Half-Blood since she was seven years old. Though he has said that Percy "always manages to annoy him," he has saved Percy's and Annabeth's life several times.