Fiction characters

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Across
  1. 2. The man who laughs
  2. 4. Doctor by day, criminal by night
  3. 7. Hiker from Betelgeuse Five
  4. 12. Big Brother's rebellious little brother
  5. 13. Leader of the droogs
Down
  1. 1. Mentally unstable teenager who wanders New York
  2. 2. One of the few with light eyes instead of dark ones
  3. 3. Damaged by the alcohol in his blood surrogate
  4. 5. A wizard, _______ The Grey
  5. 6. Claimed to be the owner of a precious ring
  6. 8. Nobody
  7. 9. The regretful book burner
  8. 10. His middle names were Percival, Wulfric, and Brian
  9. 11. She volunteered as tribute