Because you like Princess Bubblegum in Adventure Time
Amy Farrah Fowler deserves sainthood for putting up with Sheldon Cooper. See them in The Big Bang Theory.
Victor Frankenstein can create life, so he's pretty awesome if he says so himself. See them in Frankenstein.
Corpse Bride's dreams were taken from her. But now - now she's stolen them from someone else. See them in Corpse Bride.
A bloodsucker, Carlisle Cullen is actually more likely to give you a blood infusion. See them in Twilight.
This barber doesn't cut hair. Sweeney Todd sends his clients down a chute to be baked into his partner-in-crime's pies. See them in Sweeney Todd: The Demon Barber of Fleet Street.
Though Twilight might be opposed to it, her new friends might just be able to teach this serious-minded pony how to relax. See them in My Little Pony.
More than any of her friends, Fluttershy is willing to see the best in everyone, a trait that has won over many enemies. See them in My Little Pony.
Violet Parr is an angsty teen would love to become even more invisible than her superpowers allow. See them in The Incredibles.
The fearless bodyguard of Rick Flag, Katana will ruthlessly kill her enemies, trapping their souls in her sword. See them in DC Extended Universe.