Because you like Henry Roth in 50 First Dates

Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.

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.

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

Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.

Blaine Anderson is a put-together prep school boy with the voice of an angel. See them in Glee.

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

Crono may not talk, but this time-traveling hero's heart speaks volumes. See them in Chrono Trigger.

Whether it's a companion he’s failed or lingering guilt from the war, the Doctor can never truly let go of his past lives. See them in Doctor Who.

Phoebe Halliwell is a bestselling author and martial arts master with power of premonitions. See them in Charmed.

David Nolan is a noble fairy tale prince with the heart of a hero, regardless of whether he can remember his past or not. See them in Once Upon a Time.

Formerly a "sweater-set-wearing, mojito-drinking sorority girl", Paige Collins is now a successful sculptor with slight memory loss. See them in The Vow.

Jack's big imagination is never limited by his incredibly cramped surroundings. See them in Room.