Synthespian

noun
A computer-generated artificial actor appearing in motion pictures.
Origin
Portmanteau of ‘synthetic’ and ‘thespian’.
Source
Idoru

Xenonaut

noun
  1. (plural proper) An international organisation defending Earth from extraterrestrial invasion.
  2. A member of the Xenonauts defence force.
Origin
Derived from ksenos (foreign) and nautēs (traveller).
Source
Xenonauts

Ghostbuster

noun
A professional paranormal investigator and exterminator.
Source
Ghostbusters

RoboCop

noun proper
A cyborg law enforcer, formerly Detroit Police Officer Alexander James Murphy.
Source
RoboCop

Xenotech

noun
A specialist in the analysis of alien technology.
Origin
Abbreviation of ‘xeno-technologist’.
Source
Gateway

Girlygirl

noun
A professionally flirtatious hostess, akin to a geisha.
Source
The Ballad of Lost C’mell

Visicastor

noun
A video broadcaster.
Origin
Formed from visio (vision) and ‘broadcast’.
Source
Second Foundation

Tempunaut

noun
Crewman aboard a time-travelling vessel.
Origin
Derived from tempus (time) and nautēs (sailor).
Source
A Little Something for Us Tempunauts

Jedi

noun
The guardians of peace and justice in the galaxy.
Origin
Jidaigeki, a period drama.
Source
Star Wars

Looper

noun
An assassin hired to kill victims transported back in time from the future.
Source
Looper