Because you like Elsa Shraeder in The Sound of Music

Ultron is security software turned evil mastermind. See them in Marvel Cinematic Universe.

Born and raised in the darkness, Bane is determined to have the city totally under his control so that he can demolish it. See them in DC Extended Universe.

Knuckles the Echidna is a 16-year-old red echidna (aka a spiny anteater) and guardian of the ancient Master Emerald. See them in Sonic the Hedgehog.

Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).

Barbara Kean is loving, selfless, and caring. But, she's less stable than she'd like to admit. See them in Gotham.

After years of living vicariously through other people's heroic stories, Wade Watts is about to become a hero himself. See them in Ready Player One.

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.

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.

Paris Geller is a newspaper editor, class president, and headed for Harvard. See them in Gilmore Girls.

Count Olaf is a traveling actor, except he can't act and his homicidal tendencies make finding work pretty difficult. See them in Lemony Snicket's A Series of Unfortunate Events.