Because you like Lexie Grey in Grey's Anatomy

Beneath Arthur's brash demeanor lurks the heart of a compassionate future king destined to unite the five kingdoms. See them in Merlin.

Burton Guster is a level-headed investigator with a "Super Sniffer" nose. See them in Psych.

Cutting ties with her con-artist friends, Sarah Manning is creating a better life for her daughter by taking on the identity of the deceased Beth. See them in Orphan Black.

Benoit Blanc is Sherlock with Southern charm, and a mysterious benefactor. See them in Knives Out.

Tattoos, bad boys, and heroin: Jane Margolis is learning that some vices are more dangerous than others. See them in Breaking Bad.

Neurotic, motherly, and oh-so organized, Monica Geller is everyone’s favorite hostess, keen on settling down and starting a family - perhaps too much so. See them in Friends.

Andrew Glouberman is trying to make it through puberty with his sanity intact. See them in Big Mouth.

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

Jenna Rink is physically 30 but emotionally 13. She has a better excuse than most. See them in 13 Going on 30.

For Vada Sultenfuss, it's hard to embrace growing up when you're obsessed with death. See them in My Girl.