This was already done earlier today, but oh well.
This is a bit nerdy, but my choice is Zaratul from Starcraft. No fear. No regret. Zaratul doesn't take your shit.
"You speak of knowledge, Judicator? You speak of experience? I have journeyed through the darkness between the most distant stars. I have beheld the births of negative-suns and borne witness to the entropy of entire realities... Unto my experience, Aldaris, all that you've built here on Aiur is but a fleeting dream. A dream from which your precious Conclave shall awaken, finding themselves drowned in a greater nightmare."
(Speaking to Kerrigan)
"Well spoken, Concubine of the Zerg. But though we strike at you from the shadows, do not think that we lack the courage to stand in the light. You would do well to abandon this attack."