Iconic heroes and gear (easy)

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Across
  1. 3. Natasha Romanoff’s codename
  2. 5. Peter Parker’s alter ego
  3. 7. He says “I am ___”
  4. 8. Weapon wielded by Thor
  5. 9. Group led by Professor X
  6. 10. Defender of Gotham City
Down
  1. 1. King of Wakanda
  2. 2. Genius, billionaire, playboy, philanthropist (2 words)
  3. 4. Captain America’s shield
  4. 6. Clark Kent’s Kryptonian identity