Because you like Clank in Ratchet & Clank
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.
Mario is a plumber who wears a ridiculous outfit, eats weird looking mushrooms, and fits himself inside your pipes so he can save a princess. See them in Super Mario Bros..
There's no obstacle too great for this charismatic treasure-hunter. See them in Uncharted.
Driven by guilt and rage, Kratos is less a man and more an unstoppable avatar of anger and hate. See them in God of War.
Big Boss is a disillusioned mercenary commander who wants to create a world for soldiers (and soldiers alone). See them in Metal Gear Series.
NiGHTS is a powerful but childlike spirit who hates being told what to do. See them in NiGHTS into Dreams.
A super-soldier, Master Chief might be more machine than man. And for humanity's sake, thank God. See them in Halo.
To cope with injustice, Connor finds meaning in his strict and unbreakable code of honor. See them in Assassin's Creed Series.
Raiden is an efficient soldier haunted by his repressed past. See them in Metal Gear Series.
An undercover DEA agent, Max Payne is too focused on avenging the past to plan for the future. See them in Max Payne.
A genetic experiment engineered to be the perfect assassin, Agent 47 is cold, professional, and lethal. See them in Hitman.