Tomsin (Cadet)

Tomsin was a transporter-duplicate and Starfleet officer stationed aboard the USS Ragnarok in the early 25th century. 

History
In 2410, Captain Oroku Seifer, in an attempt to lure anaphasic lifeforms to Earth, initiated a transport for Tomsin through an artificial atmospheric distortion in a small patch of Earth's atmosphere and caused him to be transporter-duplicated. Both Tomsins, after failing to join the USS Valhalla, were later sent to take a position aboard the USS Valhalla. ("Tabletop Beginnings")