Celebrity Shade: These poor souls were once human as you or I, but their life essences were captured by television cameras a long time ago. Unlike regular celebrities, who maintain the semblance of normality by regularly renewing their contact with the film industry, these people only snagged one or two choice roles over the course of their life, and never managed to act again. Without a soul or a connection to one, they must exist in a perpetual half-life where their existence is defined by that one TV series they appeared in twenty-five years ago.
Celebrity shades can be found filling out the lower echelons of the guest list at any convention, lurking in the Walk of Fame in a desperate attempt to feed on the glimmerings of their half-remembered fame. They're too weak to be really dangerous; instead, they come off as somewhat pathetic, sitting around all by themselves with an occasional burst of happiness as someone remembers their show from when they were kids. One can only hope that they somehow manage to reclaim their soul someday, either by returning to the TV studio where it's being kept or by finally breaking it free of the seductive embrace of fame once and for all.