Because you like Link in The Legend of Zelda
A reformed former outlaw, John Marston doesn't want any trouble, yet somehow trouble always seems to find him. See them in Red Dead Redemption.
Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.
Molly Weasley runs a household teeming with magic: gnomes run around the garden, dishes wash themselves, and noisy ghouls rule the attic. See them in Harry Potter Series.
Ichigo Kurasaki is a short-tempered, strong-willed teen who is deeply protective of those he loves. See them in Bleach.
Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.
With her consciousness so easily shifted between bodies, Motoko Kusanagi is left unsure of who or what she really is. See them in Ghost in the Shell.
Wendy Testaburger is a born leader who is not afraid to stand up to the other fourth graders for what she believes in. See them in South Park.
A gruff and hardened professional, Marcus Fenix keeps his emotions buried deep. See them in Gears of War.
A vain and arrogant womanizer, Roy Mustang has hidden depths. See them in Fullmetal Alchemist.
With the loyalty and pluckiness of a puppy, Nana Komatsu is a hopeless romantic. See them in Nana.
Riggan Thomson is a washed-up movie star running from his inner demons. Alas those inner demons look just like the superhero he used to play. See them in Birdman.