Because you like Sally Bowles in Cabaret

Small and curious, he is a 50-year-old baby of a peculiar green species with unusual abilities. See them in The Mandalorian.

Gomez Addams fills his days with ghoulish and ghastly forms of recreation, enjoying life and all its pleasures to the fullest. See them in The Addams Family.

James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..

Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.

This power-hungry Time Lord calls himself the "master of all." Bonus: he has 13 lives. See them in Doctor Who.

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

Beth March is the glue that holds her family together. See them in Little Women.

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

Merry Brandybuck is a troublemaking hobbit with a brave streak that some might call foolhardy. See them in The Lord of the Rings.

Few can match this dwarf when it comes to self-confidence. Gimli is as eager for a good time as he is for a fight. See them in The Lord of the Rings.

If this slick ad man doesn't like the conversation, he changes it—while drinking and smoking. See them in Mad Men.