Lt. Commander Shelby is a fictional character in the Star Trek universe, a Lieutenant Commander in Starfleet, she served onboard the USS Enterprise-D during the first Borg incursion of the United Federation of Planets. Shelby was played by the female actress Elizabeth Dennehy .

Before serving duty on the Enterprise

Before the Borg incursion of the United Federation of Planets, the USS Enterprise-D encountered a Borg Cube in System J-25, 7000 light-years away from Federation territory. This encounter alerted Starfleet to the incoming Borg threat. Work on defense and offensive means to stop the Borg began, lead by Lieutenant Commander Shelby. This work included means of advancing effectiveness of phasers and weaponry, along with Federation defensive outposts. When the Borg arrived in Federation space, Shelby was transferred to the Enterprise.

On the Enterprise during the Borg Incursion

When the Enterprise encountered a Borg Cube in Federation Space, Shelby was called to duty. She was transferred to the Enterprise along with Admiral Hanson. There, she assisted the Enterprise crew in adapting weaponry and defenses to stop the Borg. Most of these plans failed, for the Borg adapted to many of the Enterprise's plans. When Captain Jean-Luc Picard was assimilated by the Borg, Commander William Riker took command of the Enterprise and Shelby became the Executive Officer, a role she was trying to take from Riker since coming onboard the Enterprise. Working together, they were able to retrieve Picard and stop the Borg threat.

After Serving on the Enterprise

After the Borg incursion, Shelby was assigned to Starfleet Headquarters in order to rebuild the depleated Federation fleet.

See: Battle of Wolf 359