Ephemeral
From Tardis Wiki, the free Doctor Who reference
The Eternals, immortals, who dwelled outside of Time, referred to mortal beings as Ephemerals, and also regarded them as lesser beings. (DW: Enlightenment) Under certain exceptional circumstances, sometimes against their will, an Eternal may enter the realm of the Ephemerals permanently, prey to age and death. (DWM: Uninvited Guest)
