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This article lists characters of Star Trek in their various canonical incarnations. This includes fictional major characters and fictional minor characters created for Star Trek, fictional characters not originally created for Star Trek, and real-life persons appearing in a fictional manner, such as holodeck recreations.

Bajoran characters are listed by family name, which is stated first.

Joined Trills are listed by the name of the symbiont, which replaces the family name.

Arex was a Starfleet officer assigned to the USS Enterprise as navigator. Arex was a member of a tripedal species (given as "Edosians" in Alan Dean Foster's novelizations of the animated episodes, but as "Triexians" in Peter David's New Frontier series) and had three arms and legs. Arex also sometimes took the conn, but he rarely left the ship on landing party missions.

Praetor Shinzon of Remus was able to obtain the disassembled B-4 and placed some special programming into him, so he could infiltrate the USS Enterprise-E to gain tactical information of the Federation from the ship.

Projections (VOY)
recurring thereafter

While stationed aboard the USS Enterprise-E in 2373, and through a strange turn of events involving the Borg, Barclay was able to meet one of his idols, Zefram Cochrane. By 2376, Barclay's main focus was developing a means of communicating with the missing USS Voyager still stranded in the Delta Quadrant.

During a crisis on board the Enterprise-D, chief engineer Geordi La Forge created a holodeck representation of Brahms, and later used her mission logs to create a personality for the representation. A year later, La Forge met the real Brahms, who found out about the holodeck program La Forge had created, and turned hostile. Later, after working with La Forge, she realized her arrogance and became friends with La Forge. In the alternate future timeline of "All Good Things...", La Forge married Brahms.

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