Because you like Marge Simpson in The Simpsons
Stefan Salvatore was the golden boy when he was alive. Can he keep it up as a vampire? See them in The Vampire Diaries.
Klaus Baudelaire's photographic memory saves the lives of his siblings many times over. See them in Lemony Snicket's A Series of Unfortunate Events.
Give in to the dark side with vampire Lestat; it's more fun. See them in Interview with the Vampire: The Vampire Chronicles.
A determined and cold-hearted spy, Cassian Andor will do what it takes to stand up to the evil Galatic Empire. See them in Rogue One.
Michelle Richardson's world revolves around her boyfriend. Alas, his world doesn't revolve around her. See them in Skins.
Though he may be blind, Chirrut Imwe sees the power of the force more than most. See them in Rogue One.
Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.
Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.
John Wick is a widowed former Navy Seal who becomes a notoriously effective hitman, killing over 124 people with gunshots alone. See them in John Wick.
The brilliant Mona Vanderwaal is proof that undergoing an "extreme makeover" isn't always a good thing. See them in Pretty Little Liars.
Charles Boyle is the human equivalent of a puppy, only slightly less adorable. See them in Brooklyn Nine-Nine.