The [Blank] Marvels!

The various adjectives Marvel heroes are called.
  1. Incredible
  2. Amazing
  3. Superior
  4. Sensational
  5. Mighty
  6. Avenging
  7. Uncanny
  8. Astonishing
  9. Savage
  10. Irredeemable
  11. Invincible
  12. X-tream
  13. Infamous
  14. Unbeatable
  15. Fearless
  16. Immortal
  17. Rampaging
  18. Spectacular
  19. Indestructible
  20. Extraordinary