10 Best Star Trek Villains In Only One Episode

10. Silarin Prin - Deep Space Nine, The Darkness And The Light

This fifth season villain of Deep Space Nine was an ethical conundrum for Major Kira to face. He is the victim of one of her terrorist attacks on the Cardassians during the occupation, hell bent on revenge.

He is brutally effective in his vengence. First, he kills Mabrin while praying, then Fala by scrambling her transporter signal. Perhaps the saddest deaths are those of Furel and Lupaza, coming hot on the heels of another member of the resistance cell, Mobara. They are killed when the window to the O'Brien's quarters is vaporized, blasting them into space.

Prin is devastatingly good at what he does and it is planned to the last. It all designed to get to Kira, as she is the one to whom his messages are sent. Driven mad by his injuries, he feels no remorse for the deaths of the guilty, as he puts it. In his mind, he is very much the avenging angel, striking those evil insurgents who did this damage to him.

He is of course eventually discovered and, after some tense back and forth between the two, where Kira expresses no remorse for her actions during the occupation, he prepares to cut the O'Brien's baby from her womb so that it won't have to suffer the same punishment as Kira.

Though she overpowers and eventually kills him, it is clear by the episode's end that Prin has left a very lasting assault on her, opening her eyes to the moral ambiguity of what was done in the name of freedom and the victims (and monsters) that her actions inadvertantly created.