Blanka’s slide on block (close): Ultra/Super/combo
Blanka’s slide on block (far): safe
horizontal roll (to trade or stuff him): KKK s.hk/PPP s.hp/PPP c.lp or s.lp
horizontal roll (blocked): Ultra/Super/dash forward mk xx hands
horizontal roll (hit): Super
horizontal roll (block or hit, blanka in corner): Ultra/Super/combo
vertical roll (block): Ultra/Super/walk forward mk xx hands
vertical roll (hit): Ultra/Super
vertical roll (block or hit, blanka in corner): Ultra/Super/combo
Electricity (blocked): safe
rainbow roll (blocked): Ultra/super/combo
rainbow roll (you focus it): dash cancel then punish him as he’s landing with anything you want/if he’s not landing on the other side of you, hold your focus to level 3 FA
c.hp (block): mk xx hands/Super (if close, otherwise you can’t super it)
These are from memory cuz I’m still in the office. Try these in training mode and I’ll go home later and confirm all these.
Other things to remember:
Always watch his meter. If you knock him down and he’s meterless, use a meaty move and he has to block it or backdash (a meaty crossup takes care of the latter). If he’s crouching and holding his charges for his rolls, learn the range at which KKK j.hp stuffs any roll he throws at you and you can get in on him for free unless he can get electricity out fast enough (don’t ever rely on jump attacks beating electricity)
Always watch his charge. If he just moved forward, he can’t use any roll.
Learn your safe-jump setups against him to keep pressure on him and bait out ex vertical roll
Put him in the corner. Not only can you use KKK c.lk -> PPP U1 in the corner, but both blanka’s horiz. and vert. rolls become unsafe on hit. If Blanka has U1 and starts jumping backwards into the corner, watch for his j.hk -> U1; it’s an easy combo for him to confirm with all the hit-stun from j.hk
Practice your punishes in training mode a lot (I do this for any character that gives me problems). Use your intuition to know what he wants to do, and if he actually does it, your training and muscle memory will take over.