He has brown hair, brown eyes, and dark skin, and he wears a dark blue sweater, gray pants, and white shoes. His traits are Ambitious, Insane, Neurotic, and Brave, and his lifetime wish is to be a Chess Legend. He is best friends with Rose Adler, good friends with Toby Bassett, and enemies with Jo Abel.
At the start of the game, he works as a Report Processor in the Business career. The house which Billy and Toby share is called 'The Do-It Den', most likely a reference to how the pair have a strong desire to win. They start off with §2,534 in total.