Voyager Sexy Spotlight - Seska - Martha Hackett

Seska is the girl you definitely don't want to take home to Mother.  On the other hand, if you want a conniving, double dealing and basically psychopathic personality to join the family, perhaps Mom would take a real shine to her.  On Star Trek: Voyager, actress Martha Hackett brought to life a Bajoran who was really a Cardassian.

Seska, among many other interesting things, was a spy - surgically altered to appear a Bajoran. She'd romance Chakotay (Robert Beltran), then throw the love affair back in his face by carrying on with a Kazon heavy.  The ultimate betrayal would be her pretending to have Chakotay's baby, when in reality, it was the son of the Kazon Culluh. 

Star Trek Sexy Aliens - B'Elanna Torres - Roxann Dawson

Star Trek: Voyager is the third spin-off TV show from Gene Roddenberry's classic series.  Focused on the Starfleet Starship Voyager, lost in space, and helmed by Captain Katherine Janeway (Kate Mulgrew), the show premiered on the UPN network in 1995.  Among the crew was a half human, half Klingon woman - B'Elanna Torres, played by actress Roxann Dawson.

B'Elanna became the starship's Chief Engineer and her excellent tech skills managed to save the ship and crew on more than one occasion.  One thing she constantly had to work on was her fiery temper.

The Klingon side of her would roar forth and Torres would do all she could to reign it back in and calm down.  Eventually, she hooked up with the intrepid helmsman, Lt. Tom Paris (Robert Duncan McNeil) and they not only wed, but had a baby together.