Related Clues:

• A bit off
• Spaceship inhabitant
• Far from conventional
• Very unfamiliar
• More than just unfamiliar
• Like all but one prime number
• Like most primes
• Sort of peculiar
• "Hmm. . ."
• UFO flyer
• "___ Nation" (1988 sci-fi movie)
• Somewhat strange
• Sigourney Weaver sci-fi film
• ''Men in Black'' character
• 'Huh!'