Mole man + Stand Your Ground mastery
According to mole man abilities, as long as he has 1 monster mass charge he gains 75% chance to resist a block break, so adding 3 points on Stand Your Ground Mastery chance would raise up to 100% which means he would be able to block unblockable attacks by removing all monster mass charges.
The question is: Can he block SP unblockable attacks? If so, cahe block the whole attack or only the first hit?