Lieutenant Dever was a Human who served as an operations division officer on the USS Skylark in the 23rd century. He dabbled in poetry.
In 2259, Dever was involved in a casual relationship with Christine Chapel from the USS Enterprise. When the two arranged to meet on Starbase 1, Dever broached the idea of deepening their relationship and transferring to the same ship, to which Chapel prevaricated. Chapel later broke up with him, admitting that she found him "boring". (SNW: "Spock Amok")
Dever was played by Graham Parkhurst.