Because you like The Terminator in The Terminator

Billy Butcher's job is to give everyone hell by any means necessary. See them in The Boys.

Fun and feisty on the outside, Meredith Grey is dark and twisty on the inside. See them in Grey's Anatomy.

Madoka Kaname's new world of witches is challenging her optimism. Still, even in the worst of circumstances, she holds onto hope. See them in Puella Magi Madoka Magica.

Stoic, cynical, and independent, Homura Akemi is an alluring enigma. See them in Puella Magi Madoka Magica.

Linda Belcher doesn't prescribe to what society deems as "normal." She narrates her life through song, much to the alarm of everyone nearby. See them in Bob's Burgers.

Terry Jeffords (and his muscles) may look ferocious, but inside he's just a caring mama hen. See them in Brooklyn Nine-Nine.

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

Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.

A suave demon, Crowley grants humans their wishes in exchange for their soul, only to find loopholes that benefit him. See them in Supernatural.

Alison DiLaurentis believes you're always better off with a really good lie. See them in Pretty Little Liars.

Princess Bubblegum is brilliant and determined, but can display a nasty temper. See them in Adventure Time.