Because you like Violet Baudelaire in Lemony Snicket's A Series of Unfortunate Events
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.
Tiana lives by a simple motto: "Fairy tales can come true. But you gotta make them happen, it all depends on you." See them in The Princess and the Frog.
Hank McCoy is a quintessential nerdy scientist but with a few rather unconventional physical attributes. See them in X-Men Series.
Dorothy Gale is a down-home Kansas girl in a bizarre fantasy land with beautiful red shoes. See them in The Wizard of Oz.
A singing nanny, Mary Poppins is practically perfect in every way. See them in Mary Poppins.
N'Jadaka is a righteous man with a violent agenda. See them in Marvel Cinematic Universe.
Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).
Charlie Bucket may be down-on-his-luck, but his spirits are always sky high. See them in Charlie and the Chocolate Factory.
Miss Peregrine exists to protect her wards, whether they like it or not. See them in Miss Peregrine's Home for Peculiar Children .
A bloodsucker, Carlisle Cullen is actually more likely to give you a blood infusion. See them in Twilight.
Working as a captain in the American Expeditionary Forces and a spy for British Intelligence, Steve Trevor wants to end World War I once and for all. See them in DC Extended Universe.
Often the one to deliver bad news to the families of victims, Jennifer Jareau isn't sure this is what she signed up for. See them in Criminal Minds.