THE AUTONS Episode: 1 Murderous mannequins animated by the Nestene Consciousness for grunt work. Concealed within their hand is a weapon which they can use to kill their targets.

THE NESTENE CONSCIOUSNESS Episode: 1 An disembodied extraterrestrial intelligence which has the power to animate plastics via telepathic projection. Essentially the leader of the Autons. It's intends to wipeout the human race and use earth for it's resources.

LADY CASSANDRA Episode: 2 The last living human being. She has had 708 cosmetic operations to keep her alive. Her stretched skin needs to be constantly moisturised by her attendants or it will prove fatal. She attempts to blow up the spacestation, 'Platform One' to fund more surgery.

THE GELTH Episode: 3 An alien species comprised of gas whose physical bodies were destroyed in the Time War. They need to murder earths human inhabitants to use the dead bodies as a vessels.

THE SLITHEEN Episode: 4, 5 & 11 A baby-faced alien family from the planet Raxacoricofallapatorius. They have massive forearms with deadly claws. They are also able to disguise themselves in human skins.They intend to destroy earth and sell the radioactive remains as fuel.

THE DALEKS Episode: 6, 12 & 13 A deadly mutant race housed in armoured metal casing. Their primary weapon is a death ray which instantly kills anything that comes into contact with it. They also can hover when required. Their ultimate goal is complete conquest. They were thought to have been wiped-out in the Time War...

JAGRAFESS Episode: 7 Full title, The Mighty Jagrafess of the Holy Hadrojassic Maxarodenfoe. A hideous, giant slug-like creature that needs a cold climate to survive. It does its bidding through The Editor, enslaving and manipulating the human race without them even realising

REAPERS Episode: 8 Winged reptile-like creatures with a sharp beak and claws. They materialise in and out of the time stream to sterilise paradox's by consuming everything in sight.

THE EMPTY CHILD Episode: 9 & 10 A by-product of a dead four-year-old child reanimated by nanogenes. This entity has telekinetic power and touching it will result in a similar and fatal transformation.

THE EMPEROR DALEK Episode: 13 Self proclaimed god of the Daleks. The Emperor survived the Time War and began harvesting humans, gradually rebuilding an new army of Daleks.

THE SYCORAX Episode: 1X An alien race wearing bone-like masks and robes to hide their skinless human-like bodies beneath. They are skilled in combat and can use spells or "curses". They attempt to enlave earth by threatening to wipeout a third of it's population, or to take by force.