Who was the first masked superhero?

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Tags

1. #gesturing
2. #before
3. #superhero
4. #ability
5. #debuted
6. #superpower
7. #hypnotically
8. #reference
9. #simply
10. #could
11. #believe
12. #earliest
13. #superman
14. #years
15. #anything
16. #first
17. #popular
18. #propably
19. #mandrake
20. #people
21. #magician