1. Worst MU?
KUHBAWL Kitana and.....SUB-ZERO!
2. Best strings... And i mean, only those that needs to be learned.
21 1+2
34
33
b22
b312
f221
b22
3. Best specials? Is there anything i need to just leave out?
LEAVE OUT HIS TELEPORT OUTSIDE OF U4 TELEPORT
4. How important are the bombs and how often should i use them? Or are they only situational, like against really offensive people?
they're okay in controlling space but don't get greedy with them
5. Do u pretty much ignore his portal in online gameplay?
...portal? you mean the teleport? it sucks lol
6. How important is the self freeze? I guess u dont wanna abuse this, but u gotta read your opponent abit...
its good against characters like Cage and Kabal. or characters who get tooo greedy with rushdown.
http://testyourmight.com/threads/list-of-strings-interruptible-by-icy-counter.23821/
7. Is he overly dependent on his dive kick?
in some matchups yes...but in some you will have to avoid it
8. Is he mostly a rushdown or offensive fighter? - Or can he be used great for everything? Even zoning with the bombs, and zone somewhat similar to Noobs black holes?
he is a rushdown character but one that kinda gets advantage in the fact that his rhythm is weird and at times difficult to adjust too.
9. And ofcourse, the coombos...
2 best/most solid/safe midscreen?
21 Freeze jip 21 1+2 dash u4 slide
34 b22 slide
1 xray midscreen?
don't rely on it outside of X-Ray gimmicks
1-2 corner combos?
21 freeze back dash jip 21 1+2 njp u4 slide
34 34 34 34 slide
1 xray corner?
21 freeze jip 21 1+2 njp 21 1+2 instant jump kick into xray
Why did u pick and stick with CSZ?
Because I felt like it
What is the best advantage with him? - Why should u use him, besides he is fun to play.
best advantages he has are his weird gimmicks, in both rushdown and bomb setups. he is veeeeeeery weird to fight against if you aren't Kabal, Kitana or Sub-Zero
Other general tips, for a possible new Cyber Sub main?
All you want to know about CSZ credit to the CSZ messiah
J360
http://testyourmight.com/threads/cyber-sub-zero-in-depth-video-guide-by-j360.23939/
LEARN HIS FRAME DATA credit to
Somberness
http://testyourmight.com/threads/cyber-sub-zero-frame-data.8589/
Anti-airs are very important
http://testyourmight.com/threads/cyber-sub-zeros-anti-airs.16920/
A completely overlooked thread that is still relevant
http://testyourmight.com/threads/cyber-sub-zero-dive-kick-guide.7708/