Because you like Lily Aldrin in How I Met Your Mother

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

A loyal dinosaur, Yoshi loves both saving the day and chowing down on a good meal. See them in Super Mario Bros..

Jack Bauer is a terrorist fighter who is scared of nothing and no one. The clock is ticking! See them in 24.

Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.

M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.

Underneath her brassy, sarcastic exterior, Olive Penderghast is more sensitive than she pretends to be. See them in Easy A.

Elaine Benes is a tough New Yorker who can hang with the guys, and date the ones who are "sponge-worthy." See them in Seinfeld.

A 100-plus-year-old who looks like a dreamy teenager, Edward Cullen warns girls to avoid him, which makes them want him even more. See them in Twilight.

A good guy who's made some bad choices, Scott Lang is driven in his quest for redemption. See them in Marvel Cinematic Universe.

More of a sex symbol than a crime-stopper, the original Silk Spectre has now become the ultimate superhero stage mom. See them in Watchmen.

The main priority for Nagisa Hazuki is making sure that everyone has fun. See them in Free! Iwatobi Swim Club.