Because you like Optimus Prime in Transformers
A contemptuous aristocrat, Violet Crawley is unafraid to exert her authority and voice her opinions, no matter how harsh they are. See them in Downton Abbey.
Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.
Christian is a romantic who for some reason won't stop singing everything he feels. See them in Moulin Rouge.
You don't teach a class called "How To Get Away With Murder" without knowing a thing or two about getting away with things. See them in How to Get Away with Murder.
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.
Ahsoka Tano hopes to be a very powerful and knowledgeable Jedi one day. See them in The Clone Wars.
Cosima Niehaus loves exploring the unknown. Even her own DNA is a puzzle, waiting to be unlocked. See them in Orphan Black.
A passionate paleontologist with interests no one seems to share, Ross Geller tries to find love despite his past of abandonment and an awkward personality. See them in Friends.
Cosette is an idealistic woman whose innocence stands in contrast to her harsh childhood. See them in Les Miserables.
Claire Underwood is scary intimidating, and she knows it. See them in House of Cards.
Howard Wolowitz is an engineer whose serious mommy issues somehow haven't dimmed his confidence. See them in The Big Bang Theory.