Because you like Kyle Broflovski in South Park
Jenna Rink is physically 30 but emotionally 13. She has a better excuse than most. See them in 13 Going on 30.
Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.
Charlie Kelmeckis is a wallflower who's starting to blossom into something more. See them in The Perks of Being a Wallflower.
Francis Freeman may be impervious to pain, but he sure knows how to inflict it. See them in Deadpool.
A crooked cop, Harvey Bullock is the product of a not-so-just criminal justice system. See them in Gotham.
Genetically and cybernetically enhanced, Gamora was trained from birth to be one of the deadliest women in the galaxy. See them in Marvel Cinematic Universe.
Tony Stark's interests include cocktails, beautiful women, particle physics, and saving the world. See them in Marvel Cinematic Universe.
Diana Prince is using a truth-telling lasso and super-strength to make Earth a little more like Paradise. See them in DC Extended Universe.
Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .
Celie Johnson says she's poor, black, and may even be ugly. But dear God she's here. See them in The Color Purple.
What Ron Weasley lacks in motivation and book smarts, he makes up for in loyalty and street smarts. See them in Harry Potter Series.
Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..