Because you like Joey Potter in Dawson's Creek
Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.
Faith has a chip on her shoulder and a stake in her hand to slay vampires in her town. See them in Buffy the Vampire Slayer.
Xander Harris' life motto: laugh in the face of danger and then hide until it goes away. See them in Buffy the Vampire Slayer.
With each reboot, Janet progresses more and becomes capable of human emotions. See them in The Good Place.
A poised, stately man-out-of-time, Ichabod Crane typically faces the modern world with wry quip. See them in Sleepy Hollow.
Olive Hoover is an irrepressible child beauty queen (or would-be queen) who doesn't play by your rules. See them in Little Miss Sunshine.
Jo Wilson is an accomplished doctor who's getting over her past. See them in Grey's Anatomy.
Drusilla's hobbies include dolls, music, and killing people. See them in Buffy the Vampire Slayer.
James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.
Lane Kim is the drummer for Hep Alien, but don't let her mom know. See them in Gilmore Girls.
Donna Pinciotti is strong, independent, and empathetic. No one messes with her. See them in That '70s Show.