Ensign Lance was a 23rd century Human Starfleet operations division officer assigned to the USS Enterprise under Captain Christopher Pike.
As part of a landing party exploring the abandoned Illyrian colony on Hetemit IX, Lance unknowingly contracted a virus that made the sufferer obsessively attracted to light (which rapidly spread aboard the Enterprise when most of the landing party returned).
Lance was driven to remove his uniform in the corridors of the ship to feel the illumination on his skin, before smashing through a light panel with his head to get closer to the light within. (SNW: "Ghosts of Illyria")
Lance was portrayed by Daniel Gravelle.