His full 6 hit ground combo is HP, HP, LP, LK, HK, B+HK (6 hits - 23%)

However, you should only use that if you are using a punch or kick starter before it. If you are doing a regular ground combo, remove the low punch and it makes it HP, HP, LK, HK, B+HK = 5 hits - 26%

However if you use a punch or kick starter, use the 6 hit combo, cus then it does more damage...

He also has a 3 hit ground combo; HK, HK, B+ HK (3 hits - 19%) that is necessary to use in some situations...

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No way is unmasked Sub Zero lowest tier in UMK3

Basic Combos:
1. HP, HP, B+HK 3 hits 18%
2. HP, HP, LP, B+HK 4 hits 22%
3. HK, HK, B+HK 3 hits 19%
4. HP, HP, LK, HK, B+HK 5 hits 26%
5. HP, HP, LP, LK, HK, B+HK 6 hits 23%

If you do his #5 combo, sounds like an extra value meal, with 1 button combos in MKT, it does the full 30% damage.

Matt