Because you like Lisbeth Salander in The Girl with the Dragon Tattoo
For the sake of science, Kurisu Makise will persevere no matter how deep into the dark secrets of the world she finds herself. See them in Steins;Gate.
A whip-smart NYU professor who is a master of her classroom but less confident in her love life, Rachel Chu comes into her own on a trip to Singapore. See them in Crazy Rich Asians.
Connor Walsh is arrogant enough to think he's the smartest guy in the room, and quick-witted enough to prove that he is. See them in How to Get Away with Murder.
Michaelangelo is an above-ground crime-fighter by night, and a pizza-eating, sewer-dwelling mutant ninja turtle by day. See them in Teenage Mutant Ninja Turtles.
After several hundred years of shutting himself out from the rest of the world, Japan's not used to dealing with nations, See them in Axis Powers Hetalia.
Sophie Sheridan is a proud and independent woman who hardly ever looks before she leaps. See them in Mamma Mia!.
Ryan Howard is a temp turned executive turned failing small-time media mogul. See them in The Office.
Dallas Winston is headed down a dangerous, criminal road. See them in The Outsiders.
Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.
Roman Roy is an entitled rich boy, but he's smarter than he seems. See them in Succession.
Shaggy might be a bit of a slacker, but his heart and his stomach are usually in the right place. See them in Scooby-Doo.