Because you like Sophie Sheridan in Mamma Mia!
Ellen Ripley defines the word "badass." When she's not leading her crew on an interstellar voyage, she's slaying terrifying creatures. See them in Alien.
Sabriel is smart enough to understand the dangers that await her and brave enough to face them anyway. See them in Abhorsen Series.
Blade has all the cool vampire powers with none of the weaknesses. Definitely not a guy to pick a fight with. See them in Blade.
Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..
An infamous vampire, Alucard is a one-man killing machine with a philosophical side. See them in Hellsing.
Cosima Niehaus loves exploring the unknown. Even her own DNA is a puzzle, waiting to be unlocked. See them in Orphan Black.
Captain Spock is on a five-year mission exploring the final frontier and boldly going where no man has gone before. See them in Star Trek.
A super-soldier, Master Chief might be more machine than man. And for humanity's sake, thank God. See them in Halo.
Crono may not talk, but this time-traveling hero's heart speaks volumes. See them in Chrono Trigger.
A powerful dragon-hunting warrior, Dovahkiin is destined for great things. See them in The Elder Scrolls V: Skyrim.
On the football field, Tim Riggins has it together. But off the field, he sports bloodshot eyes and broken hearts. See them in Friday Night Lights (TV).