Is Robin and Nightwing the same person?

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Tags

1. #superhero
2. #established
3. #grayson
4. #nightwing
5. #firmly
6. #tenure
7. #person
8. #ended
9. #people
10. #become
11. #robin
12. #these
13. #apart
14. #accurate
15. #original
16. #batman
17. #career
18. #after