Because you like Cookie Monster in Sesame Street

A compassionate medical student, Martha Jones has found a Doctor she can really look up to. See them in Doctor Who.

Betty Cooper seems like a sweet girl, but she also has a dark side and can go beyond what's safe or sane. See them in Archie Comics.

Catherine Linton was once spontaneous and rowdy but ever since marrying the wealthy Edgar, she has morphed into a boiling pot of emotional outbursts. See them in Wuthering Heights.

Kathryn Merteuil may be a vain sociopath, but you won't be able to look away. See them in Cruel Intentions.

She's mostly doom and gloom, but you'd get nowhere without Sadness. See them in Inside Out.

Although Mako Mori may be small and quiet, she is a core of battle-hardened steel. See them in Pacific Rim.

Community-driven but practical, Calvin Palmer is a natural leader even if he doesn't always see it. See them in Barbershop.

Vengeance is William Wallace’s game. With his father, brother, and wife killed by the English, he slaughters the garrison and sacks cities. See them in Braveheart.

Jesse Tuck dreams of finding someone to join his unusual family. See them in Tuck Everlasting.

While Cassie Ainsworth's head is always in the clouds, her heart is always in the right place. See them in Skins.

Jason Bourne is suffering amnesia, but considering what he's done as a CIA assassin, maybe that's for the best. See them in The Bourne Identity.