Because you like Donna Carmichael in Mamma Mia!
Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.
Catherine Linton was once spontaneous and rowdy but ever since marrying the wealthy Edgar, she has morphed into a boiling pot of emotional outbursts. See them in Wuthering Heights.
Everything is fascinating to Octavia Blake who has been locked away for her entire life. See them in The 100.
No one has seen The Mandalorian without his helmet since he swore the creed. See them in The Mandalorian.
With each reboot, Janet progresses more and becomes capable of human emotions. See them in The Good Place.
Privileged young Bruce's childhood was nearly perfect. Now, his life is anything but. See them in Gotham.
Scooby-Doo always keeps his priorities in order: eat snacks first, solve mysteries later. See them in Scooby-Doo.
Joe West is overprotective and secretive when his children are involved. See them in DC Extended Universe.
It is a truth universally acknowledged that Elizabeth Bennet doesn't suffer fools or prideful men. See them in Pride & Prejudice.
Garnet is a Crystal Gem who'll protect her friends with her life. See them in Steven Universe.
Often on the verge of a nervous breakdown, Annie Edison nevertheless manages to be the brain of the Greendale study group. See them in Community.