Barbara Brinson and her theoretical "transporter clone"
Lieutenant Barbara Brinson's clone was a theoretical transporter clone based on the premise of incident that created Tom Riker from William T. Riker.
This individual's existence was theorized by Ensign Beckett Mariner in 2380, during her attempt to uncover the true nature of Brad Boimler's girlfriend. A photograph of such a person appeared on Mariner's conspiracy board during her investigation. (LD: "Cupid's Errant Arrow")