The "Mirror-Universe-like" evil versions of the VOY crew in Living Witness were awesome - much better than the DS9 version of the MU. I liked that they weren't portrayed as sex-obsessed and promiscuous, just really ruthless, calculated and dangerous. Contrary to the usual practice, evil!Seven was far less sexed-up or attractively dressed than the real Seven - she was a real Borg instead, robotic and scary, leading her Borg drones!Living Witness was as close as we got to seeing evil versions of the Voyager crew, and it was fantastic. I liked the mirror versions, probably more than the real ones!
And yeah, we did see Mirror Tuvok in one of the DS9 MU episodes.


Too bad that they weren't real - so VOY escaped/missed the basic idea of MU, that these good people we know could all have turned out evil in different circumstances. (I always liked the idea of MU - I just don't like the execution most of the time...)