top 15 captain america foes
1. red skull
2. baron zemo
3. madame hydra(viper)
4. baron strucker
5. dr faustus
6. arnim zola
7. queen hydra
8. agent bravo
9. crossbones
10. machinesmith
11. sin
12. master man
13. superia
14. sidewinder
15. batroc the leaper