A patron of the Prague bar where Tereza works. The obnoxious man accuses Tereza of serving alcohol to a young man, and then the obnoxious man subtly accuses her of being a prostitute. Tereza later discovers that the obnoxious man is a member of the secret police, and she grows increasingly paranoid that he is trying to incriminate and subsequently imprison her. The obnoxious man never does officially incriminate Tereza, but he serves as an example of the intimidation and terror employed by the Communist regime in Czechoslovakia during the Cold War.