Crater: The Crossword Puzzle

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Across
  1. 4. An illegal biological machine
  2. 5. The reoccurring enemy of Crater
  3. 8. Lead of the Aces shoveball team
  4. 10. Crater's short tempered brother
  5. 12. Crowhopper transport
  6. 13. Mechanics
  7. 15. An Umlap
  8. 16. Explosives experts
  9. 17. John Medaris' son
  10. 19. Moon currency
  11. 20. Crater's song
Down
  1. 1. Former crowhopper hostage
  2. 2. A notably dumb creature
  3. 3. A creature that attacked the cycler
  4. 6. Former warhorse
  5. 7. A giant city on the moon
  6. 9. Crater's job
  7. 11. Crater's hometown
  8. 14. Umlap King
  9. 18. Truck driver who died in a race