Because you like Cosmo Kramer in Seinfeld
Kathryn Merteuil may be a vain sociopath, but you won't be able to look away. See them in Cruel Intentions.
An inquisitive archaeologist, Professor Hershel Layton knows a gentleman leaves no puzzle unsolved. See them in Professor Layton.
Part of an elite team of investigators, Abby Sciuto is the happiest Goth to ever work in law enforcement. See them in NCIS.
Puss In Boots is a suave, honorable ladies man/cat who's not above playing cute to get you to let down your guard. See them in Shrek 2.
It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.
Simba just can't wait to be king, but he's got a lot of growing up to do first. See them in The Lion King.
Louise Belcher might be just a kid, but she can manipulate just about anyone with a pulse. All in the name of fun, of course. See them in Bob's Burgers.
Leone Montana is a fearless hitman with a surprisingly sensitive side. See them in Leon: The Professional.
Kesuke Miyagi is a karate expert who thinks the best way a scrawny high schooler can learn how to defend himself is by washing every surface in sight. See them in The Karate Kid.
Underneath her brassy, sarcastic exterior, Olive Penderghast is more sensitive than she pretends to be. See them in Easy A.
It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.
Emma Frost's superpower: transforming her body into an unbreakable diamond. See them in X-Men Series.