Along with the fuzzles at the beginning, there are two scrubs you have to save to continue with the game (near the end).
To get perfect (angelic) quarma, I do believe you have to save every scrub and fuzzle. I even resurrected free (native) mudokons that were killed by sligs in fights to ensure angelic quarma.
Actually, you can kill most of the fuzzles in the first Munch level by sending them one by one into the last room of interns. I managed to finish the level with only one fuzzle... if I remember correctly.
Wow, I haven't posted a serious thing in this forum for ages...