who am I?

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Across
  1. 4. l am clever
  2. 5. lightning speed
  3. 7. I can control heaps of energy
  4. 8. they lost the 2018 grand final in the AFL and they are my fave footy team
  5. 9. I assist people in the classroom
Down
  1. 1. I like to make things that are different
  2. 2. name of our flag
  3. 3. I won a 2018 to 2019 premier in this sport
  4. 6. I always try my best
  5. 10. I like jokes