Yes I know Gunter from Shoryuken has an awesome a-groove anti blanka going but I want to know more anti stuff other than activating a-groove. When blocking Blanka's roll ball here's what I found useful to deal with it.

Haoumaru-Standing HP
Maki-QCF+LK, MK
Honda-Charge B,F+MP
Balrog(Boxer)-Charge B,F+LK
Bison(Psycho)-Charge B,F+HP
Blanka-Charge B,F+HP
Sagat-Standing MK
Chun-Li-Standing MP
Yamazaki-Walk a bit, Standing HK
Yuri-Walk a bit, Standing HK
Hibiki-QCF+MP
Dhalsim-Standing HP

Any others?