My personal favorite is
Scorpion JiP,2,2+1~Teleport,2~Teleport,D1~Spear, jump over punch,F21~Teleport - Sub Zero Dash, B121~Hellfire, Dash full charge B2, Dash 1, Dash B12,212~Slide
38%
14% chip or 28% depending on if they block or not
37%
---
89-103% damage
A lesser version of this also works with Ermac, Jax, and Johnny Cage.
The formula basically goes, Scorpion vortex --> Partner block string that leaves opponent standing if it connects cancelled into hellfire --> Unblockable combo.
Ermac gets
38%
13% or 21%
36%
---
87-95%
Jax gets
38%
12% chip or 24%
29%
---
80-91%
Johnny Cage gets
38%
14% or 23%
31%
13% (assuming they block everything after the nut punch)
---
96-105%
Pretty sure this will work with Cyrax, Nightwolf, and probably Cyber Sub Zero too, but I'm not touching those guys, so someone else will have to figure out how much they can "net" with this formula.
Two More Fire & Ice combos...
Sub Zero JiP B12~Freeze, NJP, Dash 1, Dash B12,21~Hellfire, Dash full charge B2, Dash 1, Dash B12,212~Slide
34%
37%
---
71%
Sub Zero JiP 214~Scorpion EX Telelport, Teleport, dash 11~Spear, tag, Sub Zero JiP B121
56% (54% if you end with Scorpion's vortex)
And a Johnny Cage one for fun
Cage JiP F4 Dash 2 Dash 2 Dash 2 Dash 44~Cunt Cracker, Jump Over Punch, F33B3~Hellfire, Dash full charge B2, B3 Dash 2 Dash 2 Dash 2 Dash 44~Cunt Cracker, Jump Over Punch, 11F1, F33B3~Shitty Thomas (Flash Kick)
37%
14% (blocked)
31%
13% (blocked)
---
95%+