I posted the below in another thread, but this one is far more relevant. If you are good at combos then great, but the hard part if finding the openings to use them. “dirty Blanka tactics” I consider to be tricks for surprising and baiting opponents in an effort to find those openings - he has many of these tricks and below are some different and personal ones I use that I have not read much about.
Some of my most evil “cheap” tricks off the top of my head (these are good to throw in only occasionally when you need them and most are reasonably safe opener attempts)…
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[]I love the combination of Blanka’s short electricity and insanely fast (and good priority) crouching HK… The fact that he electrifies for only one second, THEN you stick out your foot just when they’ve realised they should probably try to sweep you. After doing this, opponents can get very scared and unsure what to do if you accidently electrify in front of them when you shouldn’t. …It’s very important to get used to pressing jab exactly 5 times and then timing the roundhouse (or even slide sometimes) well. Doing the electric for too long is a big Blanka weakness …and something you see a lot - continued electric shouldn’t ever happen unless they are in the air.*
[*]Also, jump in > cower is a similar trick. If my jumping attack is blocked when I’m trying to put pressure on, cowering down right in front of them for one second then going straight into ex-vertical ball (or ex electric) is a nasty trick.
[*]Another good one is his standing HK. He somersaults and it looks just like he’s going to rainbow ball (ESPECIALLY if you’ve conditioned your opponent to expect a rainbow ball), do it as bait then slide.
[*]Everyone uses shortball > throw or hop > throw. But it’s surprising and funny the times you can get away with just walking straight up to them and eating their face!! Especially on those tense match moments when they’re a little afraid of you. …I think there is something unexpected and pressurising about Blanka strolling towards them …You’ll probably only get away with it once though …and I don’t really need to say this, but it’s obviously UNSAFE …But then again, the worst reaction is usually just a panicky jab jab (with no follow through) or a tech throw escape.
[*]Last one: scratch butt (I mentioned this earlier). It’s one of my favourite moves. It pisses people off big time, but it’s a quick enough pose to catch them when they retaliate …And they usually always do!! I use it in tense “match point” situations, or when they wiff an ultra, and I always use it when they have been dizzied - this REALLY enrages people!! lol
[*]Bonus (very last) trick: we all love our hop over on knockdown shenanigans, but they’re pretty easily stopped by opponents who are used to fighting blanka. I like to use this pre-conditioning to my advantage by hopping near/over them, then a well timed hop backwards when they’re rising to their feet and hopefully going for a wake up move or ultra. …Excellent baiting trick this one. This timing is character dependant (be especially wary of chunli’s ultra’s long jump forward), but is often a good way to get them to waste their ultra.
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…I almost feel like I shouldn’t be sharing these dirty Blanka secrets. 
When it goes right… A few of the above unexpected tactics sprinkled into the usual cheeky Blanka mix up have got me a couple of perfect wins against very decent players.
They’ve also earned me many, many “ragequits” :smokin:
The main thing with blanka is DON’T OVERUSE ANYTHING. You don’t want to be cowering down in front of people more than once. He has hundred’s of tricksie options, there’s no need to let the opponent learn to expect and get used to anything.