Because you like Ellen Ripley in Alien
The only thing Albert Wesker cares about is turning himself into a God. See them in Resident Evil Series.
Roger Kint is a nervous, weak, ham-handed criminal. We think. See them in The Usual Suspects.
Gruff and efficient, Sam Fisher protects a nation that can never admit he exists. See them in Tom Clancy's Splinter Cell.
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.
Vengeance is William Wallace’s game. With his father, brother, and wife killed by the English, he slaughters the garrison and sacks cities. See them in Braveheart.
A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.
He's an everyday earthworm turned intergalactic hero. See them in Earthworm Jim.
Frank West enjoys the adventure that comes from his work. But a zombie outbreak might be a little too much even for him. See them in Dead Rising.
Leonidas is not the kind of king who merely gives orders; rather, he's out on the battlefield fighting alongside his men. See them in 300.
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.
With an A.I. as loyal and witty as Cortana, who needs humans? See them in Halo.
Although Borat has a curious mind, he has no filter, and some very out of date views on just about everything. See them in Borat: Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan.