Because you like Denny Duquette in Grey's Anatomy

Frederick Frankenstein is an eccentric (O.K., maybe a little insane) professor who is excited to be delving into his family's past. See them in Young Frankenstein.

Shawn Hunter may be a bit of a rebellious bad boy, but he has a heart that's pure gold. See them in Boy Meets World.

Sophia Burset will teach you how to navigate the prison world and maybe how to make cute shower shoes from commissary items too. See them in Orange Is The New Black.

For Jack Pearson, the best thing about having triplets is giving three times the love. See them in This Is Us.

Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.

Equal parts funny and neurotic, Cory Matthews has a warm and generous spirit. See them in Boy Meets World.

Glenn Rhee somehow never loses his enthusiastic spirit – even in the middle of a zombie apocalypse. See them in The Walking Dead.

In his heart, this student rebel is more of a lover than a fighter. See them in Les Miserables.

Michael Moscovitz is a high school student of few words but a lot of heart. See them in The Princess Diaries.

You wouldn't know it by looking at her, but beneath Sheila Jackson's sweet, motherly exterior lies a sex addict. See them in Shameless.

Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.

Lily Aldrin is a flaky but supportive kindergarten teacher and painter. See them in How I Met Your Mother.