Who is Iago?

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Across
  1. 3. things are not as they seem
  2. 7. Iago's wife
  3. 8. Broken by Iago
  4. 9. result of Iago's doing
  5. 10. Iago's creator
Down
  1. 1. Iago's best ability
  2. 2. Iago's animal equivalent
  3. 4. Iago's occupation
  4. 5. ...wall
  5. 6. Iago is full of...