Because you like Doogie Howser in Doogie Howser, M.D.

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.

Though seemingly caring and calm, this motel owner has a mysterious streak of intensity. See them in Psycho.

Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.

A contemptuous aristocrat, Violet Crawley is unafraid to exert her authority and voice her opinions, no matter how harsh they are. See them in Downton Abbey.

Maddy Perez seems like an angel until she opens her mouth. See them in Euphoria.

If you need her, Lisa Simpson will be in her room with her saxophone and a good book. See them in The Simpsons.

Everyone Barney Stinson knows is getting married or pregnant. But he's just getting more awesome. See them in How I Met Your Mother.

Leslie Knope can accomplish anything, literally anything, with a little grit and help from her office. See them in Parks and Recreation.

Charlie Kelmeckis is a wallflower who's starting to blossom into something more. See them in The Perks of Being a Wallflower.

Jonathan Byers is a kindhearted outcast who tends to be in the wrong place at the wrong time. See them in Stranger Things.

Tracy Turnblad's got rhythm, and she's determined to share her dance moves with the world. See them in Hairspray.

Vivian Ward is a no-nonsense working girl with fairy-tale dreams. See them in Pretty Woman.