Because you like Matthew Crawley in Downton Abbey
T'Challa is a regal superhero with the weight of the world (and particularly his nation) on his shoulders. See them in Marvel Cinematic Universe.
It's hard enough for Marta Cabrera to be part of a murder investigation, but when you can't lie? See them in Knives Out.
Robin Scherbatsky is a former teen pop star who loves dogs and is scared of relationships. See them in How I Met Your Mother.
Tracy Turnblad's got rhythm, and she's determined to share her dance moves with the world. See them in Hairspray.
As the unit chief of the FBI's Behavioral Analysis Unit, Aaron Hotchner is dead serious about avenging dead people. See them in Criminal Minds.
Kiara Carrera is a hippie socialist who likes sea turtles more than people. See them in Outer Banks.
Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.
John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.
The Hastings family is old and powerful, and Spencer will do anything to continue excelling. See them in Pretty Little Liars.
James T. Kirk is more than ready to face the final frontier. See them in Star Trek.
C is for cookie, and that's more than good enough for him. See them in Sesame Street.