In Rolemaster, I take the approach that Mooks are people too.
Mooks make sense in DnD as there is almost no chance, statistically, that a 5 hp level 1 Orc can kill a 100 hp level 10 fighter. In Rolemaster, though, as we all know I'm sure by example, even the humblest mooks can drop the mightiest fighters if the stars align. So I don't use mooks in the DnD sense. I like my fantasy Vietnam.