Because you like River Song in Doctor Who
Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.
It's hard enough for Marta Cabrera to be part of a murder investigation, but when you can't lie? See them in Knives Out.
A suave demon, Crowley grants humans their wishes in exchange for their soul, only to find loopholes that benefit him. See them in Supernatural.
White Witch's heart is as frozen as the land she rules. See them in The Chronicles of Narnia.
Nick Carraway is the perfect observer: always there for the events, but never too involved. See them in The Great Gatsby.
For Lee Everett, every day is now just another struggle to collect supplies, find other survivors, and stay alive. See them in The Walking Dead (Video Game).
Cinderella will sacrifice herself to keep her family's memory alive. See them in Cinderella (Live Action).
Burton Guster is a level-headed investigator with a "Super Sniffer" nose. See them in Psych.
The chronically bizarre Dwight Schrute is the world’s most dependable assistant to the regional manager. See them in The Office.
Blaine Anderson is a put-together prep school boy with the voice of an angel. See them in Glee.