Who is Iron Man's nemesis?

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Tags

1. #robot
2. #villain
3. #animal
4. #artax
5. #fired
6. #energy
7. #father
8. #cannon
9. #which
10. #arsenal
11. #industries
12. #groups
13. #worked
14. #defeat
15. #consisting
16. #built
17. #doomsday
18. #howard
19. #stark