Because you like Clara Oswald in Doctor Who
Walter White's knowledge of chemistry allows him to cook astoundingly pure meth, leading to a rapid – albeit tumultuous – rise in the criminal drug world. See them in Breaking Bad.
Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.
Not only could Hellboy avenge your death, he'd also have a sense of humor about it and not let it ruin the rest of his night. See them in Hellboy.
There's no obstacle too great for this charismatic treasure-hunter. See them in Uncharted.
Tidus is upbeat, carefree, and desperate not to become his father. See them in Final Fantasy Series.
You'll never get Alaska Young. And that's the whole point. See them in Looking for Alaska.
Dory is more than a little forgetful, but she'll always remember to have your back. See them in Finding Nemo.
Ethan Hunt's mission, should he chose to accept it, is to save the world from impossible threats. See them in Mission: Impossible.
The only thing standing between Rocky Balboa and glory is the person facing him in the boxing ring. See them in Rocky Series.
Quentin has his whole life mapped out. It might sound boring, but he likes boring. See them in Paper Towns.
Big Boss is a disillusioned mercenary commander who wants to create a world for soldiers (and soldiers alone). See them in Metal Gear Series.
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.