Because you like Lily Aldrin in How I Met Your Mother

Henry Mills is an idealistic young boy with the heart of the truest believer. See them in Once Upon a Time.

Catwoman might be slightly unhinged, but you can't say this feline villainess isn't confident. See them in DC Extended Universe.

Audrey Horne may seem inquisitive and charming, but she can turn on a dime. See them in Twin Peaks.

Aldo Raine is in the killing Nazi business. And as he says, business is a-boomin'. See them in Inglourious Basterds.

The self-described "ghost with the most" knows the ins-and-outs of specter life like no other. Just ask him. See them in Beetlejuice.

Evan is a sensible kid, but being sensible isn't going to help him lose his virginity. See them in Superbad.

An all-business doc , Miranda Bailey dispenses tough love to the interns she trains. Emphasis on "tough." See them in Grey's Anatomy.

Buddy Pine is an unhinged superfan of superheroes using technology to take down his idols. See them in The Incredibles.

A short-tempered guy, Bowser is determined to wreak havoc on the Mushroom Kingdom. See them in Super Mario Bros..

A soulful bass player, Nick O'Leary can't stop sending breakup CDs to his ex. See them in Nick and Norah's Infinite Playlist.

From arguing for democracy in the Galactic Senate to pursuing a forbidden romance, Padme Amidala handles danger gracefully. See them in Star Wars Series.

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