Prefix Puzzle

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Across
  1. 1. alien car robot
  2. 3. warning or indication of a future event
  3. 5. steer someone in the wrong direction
  4. 7. a word, letter, or number placed before another.
  5. 9. begin an important event
  6. 10. seriously mentally ill
  7. 11. not logical
  8. 12. not a villain nor a hero
Down
  1. 2. additional payment
  2. 4. used under the surface of the sea
  3. 6. take weapons away
  4. 8. form a mental image or concept of.