Team Liam Puzzle (Find the commonality for the code!)

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Across
  1. 3. Lowest Value in a deck of cards
  2. 7. Lowest Poker hand besides high card
  3. 8. Bikes need these to roll
  4. 10. Opposite of Odd
  5. 12. Joker always gets a Triple _____
  6. 13. Dynamic _____
  7. 14. Organs used for listening
Down
  1. 1. An arithmetical value, expressed by a word, representing a particular quantity
  2. 2. Double in degree or quantity
  3. 4. Together in a relationship
  4. 5. Optimus ______
  5. 6. Siblings born on the same day
  6. 9. Comes After First
  7. 11. Month of the Super Bowl