Because you like Carmilla in Carmilla
Moving is hard for Coraline Jones; accidentally moving to a creepy mirror world just makes it harder. See them in Coraline.
Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.
With his own ship, Peter Quill calls his own shots, and gets to fly from planet to planet blasting '70s pop hits and picking up alien chicks. See them in Marvel Cinematic Universe.
Thor is Asgardian nobility who is tickled by how us earthlings live. 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.
It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.
After surviving consecutive fights-to-the-death (damn you, President Snow!), Katniss Everdeen is thrust to the front lines of a real war. See them in The Hunger Games .
Smart and sensitive Sam Winchester tried to escape the family business, but ghosts have a way of haunting you. See them in Supernatural.
L is enigmatic, child-like, and one of the smartest people in the world. See them in Death Note.
A daring conman, Flynn Rider is so charismatic that you might not mind when he steals from you. See them in Tangled.
With great power comes great responsibility, but Peter Parker always seems to get the short end of that bargain. See them in Marvel Cinematic Universe.
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.