30 Days of Star Trek - Day 18 - Favorite Non-Aligned Race

I have to admit to not being quite certain what they want here. I'm presuming they mean "not Federation", "not Klingon", "not Romulan", "Not Cardassian", which doesn't really leave many people left over. There are some fantastically interesting people all the various ships meet, so I'm calling this one unanswerable.

( The other days under the cut )