Homer - main character. ARPANET researcher by day, phreak by night.
Ada - Homer's girlfriend. Phreak by day, telephone exchange burglar by night.
Mary - Ada's friend. Got Ada into phreaking. Is secretly jealous of her for getting Homer.
Clement - Homer's little brother. Is drafted for Vietnam where he meets the little brother of...
Tom - Homer's Australian counterpart. He tries to put on the act of a stereotypical Australian, but is he really?
Helen - Tom's sister and Clement's sweetheart. Is angry at Clement for choosing to go back to Vietnam instead of into hiding.
Claire - Homer's little sister. She wears flowers in her hair and protests the war. Homer hates her boyfriends.