Because you like Duke Nukem in Duke Nukem
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.
Billy Butcher's job is to give everyone hell by any means necessary. See them in The Boys.
Dr. Gordon Freeman is a brilliant physicist is a quiet hero. And given all the violent aliens, he better be. See them in Half-Life.
Meat Boy tenaciously throws himself into danger, and when he fails, he immediately gets back up and tries again. See them in Super Meat Boy.
Juliet Starling is a cheerleader by day, gleefully unhinged zombie killer by night. See them in Lollipop Chainsaw.
Fate has forced Amuro into the terrors of war, and he must use the Gundam and all of its power if he is to make it out alive. See them in Mobile Suit Gundam Series.
Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.
Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.
Resourceful and courageous, Chun-Li is dedicated to using her considerable strengths against evil. See them in Street Fighter.
From secret organizations to alien attacks, Kyon's life has been one weird, unexplainable thing happening after another. See them in The Melancholy of Haruhi Suzumiya.