Because you like Vizzini in The Princess Bride
Francis Freeman may be impervious to pain, but he sure knows how to inflict it. See them in Deadpool.
Tony Montana makes up for his language barrier with his immense skill at cursing as loud and effectively as humanly possible. See them in Scarface.
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).
Nick Miller might not have a bank account, but he defintely has a lot of love to give. See them in New Girl.
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.
Sabriel is smart enough to understand the dangers that await her and brave enough to face them anyway. See them in Abhorsen Series.
Oliver Tate is extremely articulate but hopelessly awkward. That's not a recipe for teenage happiness. See them in Submarine.
Carol Aird is driven to fight to make her life better, regardless the consequences. See them in Carol.
Suzy Bishop is only 12, but her withering stare and withdrawn personality are enough to make anyone wilt. See them in Moonrise Kingdom.
Amy March blends her naturally artistic spirit with a sense of practicality. See them in Little Women.