@Ryuga: I’m not criticizing you or anything like that, but have you ever thought about updating your first post with some of the information in this thread? Most of the stuff on the first post still applies, but there are some things that have changed (plus new things have been found out). However, AE 2012 is coming out soon, which might make even more stuff outdated haha.
Basically, I’m willing to help with this, if help is needed.
I’m gonna do this tomorrow. 
Sorry about that.
Sakura info has been updated. More character sections have been added(previously, I didn’t have enough space haha. There’s a character limit, so I might have to ask a mod for one more space.) Oni info has been updated. Planning to go through the thread and update the info on every character section throughout the day but it might be later on 'cause I’ve gotta go out soon.
A matchup I’ve been having a lot of trouble with lately and can’t seem to find any info on is the Adon matchup…according to Option-Select its in Viper’s favor, so either they’re wrong, or there’s just something I’m not doing or something I’m doing too much.
In either case, does anybody know the matchup well enough to analyze it?
Sorry guys lol. I’m getting to work on the Fei MU(though I doubt the things I post will help that much) and will get to work on the Adon MU too. To be honest, Viper vs Adon’s probably 5-5.
Adon is a bastard. From what I’ve tried to learn (and I’ve spent at least a good hour and a half or two hours in training mode focusing on Viper vs Adon), this is what I know:
There’s not really much you can do about his jaguar kick. It’s possible to beat it with a extremely well-timed fierce TK, but the risk-reward is bad due to the fact that if your spacing and timing are not super precise, he will beat you clean. If I also remember right, you cannot beat short kick version of his jaguar kick (the far-traveling horizontal one). Just block and deal with it.
You can beat his jaguar tooths with a jump, well-timed EX seismo, or fierce TK (the timing on this isn’t as strict as it is to beat his jaguar kick):
[LIST]
[]If you are trying to beat it with fierce TK, you need to hit him either really early (the fierce TK hitbox hits the tip of his foot. This is really pre-emptive, because you basically have to do this when you see Adon leap up against the wall.) or really late (so that his foot will touch your body right as Viper becomes invincibile from the fierce TK). The only problem with using fierce TK here is that if he baits you (in example, if you’re full screen and you attempt a pre-emptive fierce TK when he leaps up at the wall, you’re wide open if he does anything but roundhouse or EX jaguar tooth). Also, the timing for the early and late fierce TK vs the roundhouse jaguar tooth is completely different if he does an EX jaguar tooth, and there is no way to tell which version he is using until he darts off the wall. If you guess wrong, you lose.
[]A fairly safer move to this is EX seismo as long as his kick gets nullified by Viper’s invincibility. The EX seismo invincibility, if i remember right, seems to last long enough that it should beat roundhouse and EX jaguar tooth (and probably even forward jaguar tooth as well). Only issue with this is if he does a short jaguar tooth, he’s gonna bait you into wasting meter, and Viper without meter isn’t fun.
[*]Jump back or jump straight up. Jumping back is probably the safer option in the sense that you avoid the kick completely. However, if Adon and you are 100% maximum full-screen away and he goes for a roundhouse or EX jaguar tooth, you can jump straight up and do an aerial roundhouse into whatever you want (don’t forget that you can do aerial roundhouse into ultra 1). If you are not 100% full-screen away by even the slightest, then he will land under you and on the other side of you. This means if you try to roundhouse, you will be kicking the air and he can punish you with whatever he pleases. If he does land on the other side of you, you can try to do a short BK, but I haven’t tested this. Otherwise, jump back if you want the safe option here. Even better, if you’re cornered, then you can definitely do jump back and he won’t land on the other side of you. This is one of the only matchups where I don’t mind being cornered because if they get too antsy and/or try to do EX jaguar tooth into ultra, they might try a jaguar tooth to get in, but Adon ends up losing half of his life in the process. To be clear, jumping back at any point on the screen may not make you land on top of Adon for a punish, but it lets you avoid it completely if you’re full screen or at least a decent distance away. If you jump back up close or mid-range, you might be in trouble if you jump (and in that case, you should either block or attempt a pre-emptive fierce TK).
[/LIST]
Adon’s knee dp is a mixed can of nuts to me. Safe jumping his forward or roundhouse knee dp isn’t too hard and is ideal since it’s a 5 frame startup, but his short knee dp goes super far and starts up in 4 frames. To be honest, I can’t remember if he lands on the opposite side of you if he tries a short knee dp and you block it, but I remember it being annoying while I was in training mode.
All in all, this matchup isn’t fun. I’ve toyed with a lot of stuff in training mode, and mostly all I found is how to minimize / avoid the damage he deals to me, but not quite ways for me to deal more damage to him. Burn kick crossups should probably piss him off, but be careful of his knee dp. Do ambiguous BK crossups on his wakeup as if you were doing it at that safe height/positioning vs a shoto.
Good job, updated first page with your post.
i think sakura scares me more than the twins, fei, boxer, dic, and honda now
mostly because good sakuras are rare as fuck and her tatsus are all safe on block its fuckin scary
one hit from a lk tatsu and its byebye 30-40% health and a shit load of stun
i get frame trapped to death and st jab beats mash lk bk
if i back dash opponent can guess shoryuken and catch me
if i ex seismo well any character can just jump its just scary because ex seismo isnt really effective against her frame traps cause she mostly uses light attacks
and my seismo zoning isnt good enough to keep good sakuras out. most of them know fireballs are next to useless in that match and they just play patiently and react to seismos.
blaaah mind fucked
why do you guys even have a thread, every matchup is the same just follow your flowchart. to the above poster, how fucking awful are you? just mash ex seismo or burn kick or something sakura can’t pressure you.
Since you probably play Sakura, I’m assuming you have an issue with Vipers blowing you up with EX Seismo and BKs during your offence after a blocked LK Tatsu. Sakura can input (cr)LP, then press PPP, and if EX Seismo or Burning Kick comes, Sakura’s st.hp will come out, beating both of those options guaranteed. As a Sakura player, you knew about that right? RIGHT?
Why are you coming into this thread to chat shit anyway? What’s your problem?
This thread just seems hilarious to me, as if Viper plays any different depending on who’s on the other side of the screen. One size fits all.
Brain-dead shit character, just autopilot some silly mixups, you don’t even have to earn a way in against 90% of the cast.
EDIT: Can somebody just fucking ban me? I’m sick of this shitty game and it’s not like 2012 is going to change anything.
I think you’ve mistaken this for the Ibuki thread 
BUUURRNNNNNNNN!!!
Oh yeah, yeah, yeah! Every match-up is the same! Run mix-ups all day! Especially against Gief! Oh, wait. No need for footsies with Viper! Just BK your way in against people who can’t block and get nailed all the time/can’t use normals to go underneath BKs/are stupid! Why bother whiff punishing with cr.hp and other normals, knowing what normals are good against certain chars(example, f.mp/cf.hk hopping over grounded normals like shoto cr.mk) or frametrapping, or zoning with Seismos, or learning specific option selects to deal with chars, or learning counter hit combos, ect? Nah, we run mix-ups all day! BKs for life! All the other offensive chars don’t have to know their MUs either! Just go nuts!
We have a match-up thread so we discuss what other characters what we can do against characters and also,** what they can do against us **so we’re prepared for them, like every other fucking character thread. But nah, of course, we don’t need that! We’ll just auto-pilot against people who don’t have the foggiest idea about the Viper MU(like you not knowing how to deal with BKs and EX Seismos) and get our arses kicked against the ones that do and aren’t complete idiots and it’s all good yeah? And of course, every character’s match-ups drastically change from character to character yeah? Every other character’s MUs are complete unique between characters! Oh wait.
Gotta love how people invalidate mix-up chars nowadays.
Will post some Fei info later before I go out.
Not wanting to learn the 1st thing about the Viper MU and at the same time complaining that Viper players don’t learn MUs ? Something is wrong with you nobusiness.
You get blown up by Vipers because they know what they can pressure Saks with.
Guess what, most of the cast have abusable shit which cannot be used as soon as the opponent knows about it.
Reminds me of endless Lariat whine in Vanilla.
Btw Saks is a huge damage dealer. As soon as you learn how to deal with scrubby Vipers’ shit, she will go down in 2 combos. But I don’t place my hopes to high.
^
It’s jokes really. People come and bitch at a character and at the same time, display they don’t really know the MU that well.
Anyway, Fei.Most of what I’ll post was posted in this thread by me before, but anyway…
Establishing a ground-game vs Fei can be difficult due to his superior normals and rekkas.
Thunder Knuckles, especially the LP version come in handy. LP TK lowers Viper’s hitbox, and can get you underneath Rekkas for a punish. And at the same time, you’re also discouraging Fei’s use of FAs and advancing in on him. Good Feis won’t whiff their Rekkas, but if they do, whiff punish it hard. Aside from that, it’s hard to deal with Fei’s groundgame. You don’t wanna make a bad whiff when trying to poke at him with normals like cr.mk/cr.hp/cr.hk and so on, otherwise he’ll just whiff punish you with Rekka and you’re in the corner where he wants you. OH WAIT, silly me, this is Viper! Just BK your way in there for free!/sarcasm
Seismos are there if you wanna keep him out. They may try to Chicken Wing over them(especially EX ones) so, obviously, feint and bait them out. IMO, it feels pretty difficult to run the Seismo game(aside from a good distance like full-screen) at times, due to how quickly he can advance on you with Rekkas and other junk.
No Fei should be randomly Chicken Winging for fun at blatant distances, but if they do, your options to stuff it are mainly HP Thunder Knuckle and things that lower your hitbox well enough to avoid it. Cr.mk can work, so can LP TK but sometimes you may get hit. Best to stick with HP TK. For max damage, Ultra 1 works.
Fei flings you into the corner with Rekkas. Uh-oh. Well, he’s most likely going to pressure you with… more Rekkas. Again, you can LP TK underneath any gaps between his Rekka pressure, but you might just end eating more damage if he decides to pressure with normals like cr.mp instead. You can do things like try to escape the corner whenever his pressure shows signs of gaps. So when you try to interrupt his pressure with a normal, you can choose to high-jump cancel that normal into a cross-up BK to put him in the corner. Ideally, you probably just want to block and ride it out until you get an opportunity to fight him off.
All of Fei’s reversals can be safe-jumped. You can safe-jump OS Fei with LP Thunder Knuckle. If he Flame Kicks, you block. If he backdashes, he gets tagged by LP TK. If he Chicken Wings, LP TK will go underneath it. You can also OS with HP TK, which’ll beat out Chicken Wings, but if he backdashes, you’ll get buss up.
General mix-ups work well against Fei, until he gets Ultra 2. Then you have to be wary about what you can do to him on wake-up.
If Fei knocks you down, he has loads of ways to avoid Viper’s reversals. He can meaty with cr.mk, that stops HP TK, he can OS his cr.lk with Rekka, that tags backdashes. I think he can also do the same thing Sakura can do; cr.lp>PPP, which gives him cr.lp>st.lp if you do nothing, but comes out as st.hp if Viper does EX Seismo reversal for a counter hit. And he can cr.lk>Ultra 2 OS you, so if you try to BK inbetween mix-ups, you’ll eat Ultra. He can probably OS his jump-ins with Flame Kick too. Viper can bait out the cr.lk with EX Seismo feint, I think, maybe not all of them, but definitely the Ultra 2 one, have to see. HP TK snuffs out the option selects as well, but loses to cr.mk on your wake-up. Once Fei’s conditioned you not to mash, he may go for command grab set-ups. He can also tick into command grab, so watch out for that too.
Obviously, this is a MU of momentum and who can get it first.
There’s probably more, but can’t remember right now. I’ll get back to this. Lemme know what you guys think.
OS Super Jump UB is the best safe jump OS for Fei that attempts to EX CW to get out, if you cross him up then you can OS EX TK if he tries to escape. Personally find that f.s.mp stuffs CWs better than TKs just because if the Fei spaces it correctly it’s really hard to actually beat out. c.HK is pretty good in this match-up if you don’t use it too predictably.
Learn how to play footsies in the corner because that’s where you’re going to be for like half the match.
Not sure how reliable this stuff is but use it as you will: Far standing mk when used at typical distance for Fei to throw out a rekka can stuff it early. Also, meaty overhead can stop chicken wings, even EX I believe but the backwards sj OS is really good too in case they’re reactions are on point to flame kick out.
Awesome stuff guys, thanks.
Yeah, I agree about playing “footsies” in the corner. The Feis I fight get complacent and whiff normals like cr.mp during pressure attempts so I usually try to whiff punish whiffed stuff. Of course, if Fei’s on his game, yeah, it’s rare I’ll get that chance.
I use cr.hk as well vs Fei since it has really good range and reaches further than a lot of Fei’s pokes. However, against a FA happy Fei, that’ll get swallowed up, but that’s fine as long as you use TKs to discourage them. But yeah, just don’t whiff it lol.
Never thought to try out far st.mk either, so thanks for that. 
yeah I basically only use it if they’re throwing random rekkas, it kind of keeps them honest but at the same time if they are doing like little fake block strings and you try to st.mk, you’ll probably get counter hit. Like I said dont rely on it just know that its there and play around with it.
I fight Jason Wilson quite a bit and his Fei is very annoying (which is his style for every character lol). I played around with some stuff in training, found out about the far st.mk, then used it against him and it kind of threw him off a bit.
Hey guys I noticed there isnt much on the fei long match up here. At least, not on the first page. That being said I realized that this match isnt so hard in the last couple of days so I thought id share with you guys if the info was not here. Im sure its been discovered already, but viper can react to chicken with mid screen with far s.RH and it will knock him out of the air. I just played a game against a high bp Fei using this technique and did quite well.Granted he didnt use too many pokes and he wasnt very patient in our match, so im sure there are tons of things that can be done about this technique but I think its super valid if your having a hard time keeping him out, like I have in the past. Now its not so scary for me to try and seismo him, since he wont be spamming chicken wing. I can post the match if anyone needs to see what this looks like.
edit: the spacing must be correct obviously to beat chicken wing.