Featured Characters:

• Avengers (First appearance)
  • Iron Man (Tony Stark) (First appearance)
  • Captain America (Steve Rogers) (First appearance)
  • Thor (First appearance)
  • Hulk (Bruce Banner) (First appearance)
  • Black Widow (Natasha Romanoff) (First appearance)
  • Hawkeye (Clint Barton) (First appearance)

Supporting Characters:

• S.H.I.E.L.D. (First appearance)
  • Nick Fury (First appearance)

Antagonists:

• Loki (First appearance)
• Chitauri

Races and Species:

• Humans
• Asgardians
• Frost Giants
• Chitauri

Locations:

• Earth-TRN1124 (First appearance)
  • Earth
    • Earth Orbit
    • United States of America
      • New York
        • New York City

Items:

• Iron Man Armor
  • Mark VII
• Arc Reactor
• Captain America's Shield
• Mjolnir

Vehicles:

• S.H.I.E.L.D. Helicarrier