What is Sonic's most powerful form?

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Tags

1. #kusupain
2. #transform
3. #powerful
4. #emeralds
5. #hedgehog
6. #world
7. #sonic
8. #appearing
9. #recognized
10. #darkspine
11. #transformations
12. #hatred
13. #sonikku
14. #secret
15. #using
16. #hyper
17. #rings
18. #chaos
19. #sadness
20. #rather