They did a Mirror Universe story where Evil Reg comes to the main timeline.

Evil Reg is the only person from the empire to successfully pass in the Federation.

Alternate ending: a mirror copy of him appears and he chows down

He should try Infinity on the USS Calliister.

Hey now, my man Reg may be socially awkward but he’s an honorary crew member of Voyager

You know everytime it’s brought to my attention that the crew uses the holodeck to fuck copies of each other, I remember the show was made and written by a crew of people too.