Because you like Conor "Cosmo" Lalor in Sing Street

The biggest nerd in high school, Bill Haverchuck is the biggest target for bullies. See them in Freaks and Geeks.

Roman Roy is an entitled rich boy, but he's smarter than he seems. See them in Succession.

Although life in a post-apocalyptic world is far from easy, Julie Grigio maintains her sense of humor. See them in Warm Bodies.

Clay Jensen's friend Hannah is gone, and he is determined to find out why even if that brings him pain. See them in Thirteen Reasons Why .

Michael Kelso gets by on his good looks and his openhearted nature. See them in That '70s Show.

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.

Meet Homelander, the snake that lurks beneath the glossy veneer. See them in The Boys.

Amy Farrah Fowler deserves sainthood for putting up with Sheldon Cooper. See them in The Big Bang Theory.

As a doctor-in-training, John Dorian should have his head in the game. But most of the time, it's in the clouds. See them in Scrubs.

Sam Montgomery works hard, but her evil stepmother makes sure her efforts don't pay off. See them in A Cinderella Story.

Joey Potter is a low-key girl next door in love with her best friend. See them in Dawson's Creek.

Matt Flamhaff is not too concerned about being part of the popular crowd. Too bad his best friend is. See them in 13 Going on 30 .