Rhapsody Angel is the code name that the Spectrum Organisation has assigned to Dianne Simms, the daughter of World Government official Lord Robert Simms, who was a protege of Her Grace The Duchess Lady Penelope "Penny" Creighton-Ward (whom she succeeded as de facto director of the Federal Agents Bureau) after she had worked as a solicitor and barrister in Manchester, England. Some fanon speculation has her pursuing a relationship with Captain Scarlet.