Because you like Morrigan in Dragon Age Series
A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.
It's hard enough fighting a war. But it's worse for Commander Shepard, knowing no matter how hard you try, you can't save them all. See them in Mass Effect.
Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .
Jim Raynor is a decent man in an indecent universe. See them in StarCraft.
They say they saved Adam Jensen by turning him into a cyborg, but he's not sure saved is the right word. See them in Deus Ex Series.
An assassin with supernatural gifts, Corvo Attano is the last guy you should frame for murder. See them in Dishonored.
Red doesn't like to explain herself. She wants her work to do the talking. See them in Transistor.
Zeratul is cryptic, mystic, and not to be messed with. See them in StarCraft .
Wei Shen is an undercover cop on a mission for justice (or at least vengeance). See them in Sleeping Dogs.
A powerful dragon-hunting warrior, Dovahkiin is destined for great things. See them in The Elder Scrolls V: Skyrim.
Bad-ass Rayne has sworn her life to finding and destroying her vampire dad, Kagan, and killing as many other vampires as she can in the bargain. See them in BloodRayne .
Stuck somewhere between life and death, Talion is motivated by one thing only: vengeance. See them in Middle-earth: Shadow of Mordor.