Ensign Davies is an Enterprise-D geochemist on Wesley Crusher's survey team whose reluctance to run a lengthy scan becomes Wesley's first test in giving orders.
Davies appears in Pen Pals. He is one of the scientists picked for the survey of the Selcundi Drema sector, the first project Wesley Crusher is asked to lead.
When Wesley suggests an ico-spectrogram of the planets, Davies politely dismisses it as slow and probably unnecessary. Wesley backs down, then worries that he has let an older officer overrule him. Riker advises him that a leader listens to his people but must make the decision himself.
Wesley goes back and tells Davies to run the scan. Davies agrees at once and even offers to set it up. The result reveals the dilithium formations responsible for the geological upheavals, proving the young acting ensign right.