Because you like Robin Scherbatsky in How I Met Your Mother
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.
This lab mouse has one thing on his huge brain: trying to take over the world on a nightly basis. See them in Pinky and the Brain.
Donna Carmichael is a free-spirited single mom and gracefully aging hippie. See them in Mamma Mia!.
Warm and caring, Kitty Forman acts like a mom towards all of her kids' friends. See them in That '70s Show.
There can be no doubt that Ben Linus is a huge liar. But one man's lies are another man's necessary steps to protect his people. See them in Lost.
A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.
This isn't the Captian Hook of your nightmares; he's charming and devilishly handsome. See them in Once Upon a Time.
Troy Bolton is a triple threat: singing, dancing, and basketball. See them in High School Musical.
A legendary warrior with a complicated relationship to the truth, Jaime Lannister is revered and reviled in equal measure See them in Game of Thrones.