Answer:

martian

Answer	Crossword Clue
MARTIAN	"The War of the Worlds" invader
MARTIAN	Otherworldly?
MARTIAN	"The War of the Worlds" foe

MARTIAN	Potential UFO pilot
MARTIAN	"War of the Worlds" combatant
MARTIAN	"War of the Worlds" invader
MARTIAN	One in another world
MARTIAN	A being in H. G. Wells' War of the Worlds.
MARTIAN	Hypothetical visitor from another planet.
MARTIAN	Possible flying saucer pilot.
MARTIAN	Speculator about Earthmen.

MARTIAN	Favorite TV role.
MARTIAN	The little man who isn't there?
MARTIAN	Popular TV role.
MARTIAN	TV favorite.
MARTIAN	Possible U.F.O. passenger
MARTIAN	Mo. for a sci-fi alien?
MARTIAN	Sci-fi character
MARTIAN	Walston on TV

MARTIAN	Bradbury adjective
MARTIAN	Sci-fi enemy
MARTIAN	U.F.O. pilot, possibly
MARTIAN	Storied invader
MARTIAN	Otherworldly one
MARTIAN	Certain alien
MARTIAN	Kind of ET
MARTIAN	"The War of the Worlds" baddie