Josiah Samuel Smith

Survey (or, as he styled himself later, Josiah Samuel Smith) was a long-lived being involved in Light's survey of ancient Earth.

Biography
Josiah changed form to match the dominant species of the planet, leaving behind still-mobile and at least partially sentient Husks.

With Light temporarily dormant, he adopted the form of a Victorian gentleman, living in the mansion called Gabriel Chase in Perivale, a which had a cellar in which Light's ship resided. By 1883, he had presumably killed George Pritchard the owner of Gabriel Chase, and with Pritchard and his "ward" Gwendoline, servant Nimrod and houseguest/prisoner Redvers Fenn-Cooper (who he trained as an assassin), presided over a disorted version of a well-to-do 19th century household.

Josiah planned to revive the British Empire by having Fenn-Copper murder the Queen Victoria, using an invitation to meet her that he had somehow gotten. The plan was thwarted when Redvers decides to take Control instead. After Control reverted Smith to his former un-evolved state as a form of punishment, he went off with the others in Light's ship. (DW: Ghost Light).