|Family|| Gilberto Mancheno (son with Nick Amaro)|
|First Appearance||"Undercover Blue"|
|Last Appearance||"Her Negotiation"|
Cynthia Mancheno is the mother of Gilberto Mancheno. She slept with Detective Nick Amaro while he was undercover, and in the event, she became pregnant with and gave birth to Gilberto. "Undercover Blue" is the first time she is seen, and in the episode she sues Amaro for child support after nine years of separation from him. At the end of the episode however, Cynthia and Nick reconcile and she allows him to meet Gil.