Arcturus Mengsk

Arcturus Mengsk is a prominant antagonist in The StarCraft Real-time strategy PC game series by Blizzard. He is a native of planet Korhal who lead a rebbellion wtih his fellow Korhalians against the oppressive Confederacy of Man who dominated the Korpulu sector. His succeeded using genocidal tactics and treason and was responsible abandoning Sarah Kerrigan on Tarsonis, which resulted in her transformation into the Queen of Blades.

Disgusted by this, fellow rebel Jim Raynor cut ties with Mengsk and established his own rebel group entitled Raynor's Raiders.