I found a viper corner ‘unblock’ after a forward throw for a handful of characters about a month ago. Wanted to flesh it out a bit more before i posted it up but marvel came out so got distracted, finally got around to having a look at it again. Turns out she can setup some nice corner unblocks and reverse block cross ups with the right setups. Reverse block in the sense that its a cross up but they have to block towards the corner to block the cross up if you time it right, and you still land in the corner against most chars it works on. Anyways here are the setups:
Setup 1: f throw ex seismo (whiff) OR cr mk (whiff)-cr mp(whiff) [two plinkable 1f links, semi tricky] jump f hk/mk (time like the akuma unblock kinda, up around the shoulders)
-works on dan(hk works), sakura (hk-cant dash under if done late/hp/mk-cant dash f out if use), makoto (mk = unblock, hk works but makes reverse blockable and dont cross over), viper(hk/hp/mk), dictator (hk only), cody(mk or late hk/mk, hk whiffs if neutral but cant dash out), hakan(hk/hp works), guile (unblock, hk/mk), cammy (hk works, setup = whiff lp tk*), sagat (mk only, setup = whiff lp tk*), abel (hp only), rufus (hp only)
*Cammy and sagat wake up 1f later thus a diff setup is used
Setup 2: f+ mp (whiff), sj f jump hk/mk
-works on sakura (can?t dash f under hk or mk), juri (mk is unblock but can whiff holding DB), abel, viper (whiffs hk if blocks towards corner, mk doesn?t whiff and cant dash f under), hakan (hp also), guile (hk/hp only), zangief (hp also, beats kick lariat, whiffs hp lariat), rufus (hp also), fuerte (unblockable), cammy (setup = whiff m tk sj hk/mk reverse block don?t cross over after hk do cross over after mk. Other setup = far st mp, cr mp whiff sj mk), sagat (setup = whiff m tk sj hk/mk but do it high, reverse block whiffs if neutral, cross over OR far st mp, cr mp whiff sj mk norm height)
Setup 3: Off Sweep in the Corner [credit to H_Dee for finding the l tk feint setup] buffer l tk feint works against same chars as f throw reg jump setup [see above for char specifics] but also; works on ryu/ken/dhalsim/cody(cant f dash out of) if cross LATE hk only (reverse blockable), for cammy reg seismo feint cross up FIERCE only (reverse blockable) & sagat seismo feint cross up hk only (reversse block), blanka st lk whiff (cant plink) cross hk (reverse blockable), ibuki (jump hk/mk unblockable, setup = m tk feint)
-If it says hk works (or doesnt specify) it means both jump hk and mk prob work (didnt test them all but pretty sure they do), if says unblock its an unblockable, if it says mk only or hk only the alternative wont work and will prob whiff.
-Chars that can escape with dash f: some chars can dash f to duck under your jump in, these are; guile, sagat, sakura (reg jump setup but not if jump mk or late hk), viper, cody (unless do jump attack late), ibuki, dhalsim
-Counter to dash f escapes delay jump f hk/mk to punish dash f escapes: f dash will get tagged by almost meaty jump hk. For sagat use delayed jump f mk only (hk whiffs)
So if you time it right (has to be to the exact frame) you will get a cross up that must be blocked towards the corner or an unblock. If you delay your jump in a frame or two it will become a regular cross up and has to be blocked normally.
Sorry no vid cbf’d, feel free to make one though
Edited with new setups and chars