Singer is a deaf-mute who makes a living engraving silver pieces in a jewelry shop. He is almost the exact opposite of his best friend Antonapoulos, who has been his roommate for more than ten years. Singer is tall and thin, with intelligent gray eyes. He carries a notebook in his pocket to write messages and signs very well. A diligent worker and a kind person, he is also a good and attentive listener, which makes him very appealing to many of the other characters in the novel. After Antonapoulos is taken away to an insane asylum, Singer grows very sad and lonely and moves in as a boarder with the Kelly family. Although he is an outsider, many of the characters come to feel that he is the only person in their lives who understands and empathizes with their progress and pain.