Because you like Rupert Giles in Buffy the Vampire Slayer

A formerly timid caterpillar, Kurt Hummel is transforming into a glamorous, confident butterfly. See them in Glee.

Carl Fredricksen is a crotchety old man who may just have it in him to take one last, great adventure. See them in Up.

Yugi Moto is a gentle soul whose determination and talent make him a formidable opponent. See them in Yu-Gi-Oh! .

Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.

A dreamy space cadet, Luna Lovegood has never met a conspiracy theory she didn't believe in. See them in Harry Potter Series.

Courteous, dangerous, and powerful, Kaname Kuran controls an entire court of vampires. Very, very pretty vampires. See them in Vampire Knight.

Jax Teller can be cool or vengeful, calm or wrathful, depending on the situation. See them in Sons of Anarchy.

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.

Korra is stubborn, outgoing, and faced with huge responsibilities she might not be ready for. See them in The Legend of Korra.

It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.

Ramona Flowers is a delivery girl who's been through her fair share of bad breakups. Super-bad breakups! See them in Scott Pilgrim vs. the World.

Tiffany Doggett is usually a nice, good Christian. Just don't get her riled up! See them in Orange Is The New Black.