Because you like Sheldon J. Plankton in SpongeBob SquarePants

Celine's a spontaneous Parisian college student enjoying the night of her life. See them in Before Sunrise.

Clementine Kruczynski thinks that too many guys think she's a concept, or she completes them, or she's gonna make them alive. See them in Eternal Sunshine of the Spotless Mind.

If you died and came back to life, and then died more times and came back, you might stop battling evil mutants. Not Jean Grey. See them in X-Men Series.

Abbi Abrams is the ultimate wingwoman because she wants nothing more than to have a good time for its own sake. See them in Broad City.

Nomi Marks is a brilliant hacker with an open-minded, accepting spirit. See them in Sense8.

Intelligent and compassionate, Hazel Lancaster would rather face things, even bad things, than sugarcoat the truth. See them in The Fault in Our Stars.

After surviving consecutive fights-to-the-death (damn you, President Snow!), Katniss Everdeen is thrust to the front lines of a real war. See them in The Hunger Games .

Winry Rockbell is an energetic tomboy mechanic with an empathetic streak. See them in Fullmetal Alchemist.

Kathy is a natural caretaker who strives to find hope in even the darkest of times. See them in Never Let Me Go.

Effortlessly sexy, calm, and collected, Eric Northman is equally at home ripping off heads and flirting with waitresses. See them in True Blood.

Both brave and foolhardy, Thomas trusts his instincts above all else. See them in The Maze Runner.

Kat Stratford is part of the "out" crowd and proud of it. See them in 10 Things I Hate About You.