Because you like Reginald Barclay in Star Trek: The Next Generation

Although Theon Greyjoy is treated well, he's still essentially a hostage. And that isn't so easy for him to forgive. See them in Game of Thrones.

Carolos has perfect hair, a lab coat, and a constant readiness to do science. See them in Welcome to Night Vale.

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.

Nandor is a relentless vampire who never admits he's wrong, loves glitter, and can't use a tablet. See them in What We Do In The Shadows.

Usually the life of the party, Laszlo is now seriously planning the vampiric takeover of the New World. Or at least Staten Island. See them in What We Do In The Shadows.

Merry Brandybuck is a troublemaking hobbit with a brave streak that some might call foolhardy. See them in The Lord of the Rings.

A no-nonsense pro, Agent K has dedicated his whole life to his job. See them in Men in Black.

Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.

The pasta-loving, skirt-chasing personification of North Italy, Feliciano Vargas is decidedly a lover, not a fighter. See them in Axis Powers Hetalia.

You won't like him when Bruce Banner is angry. See them in Marvel Cinematic Universe.

For Lee Everett, every day is now just another struggle to collect supplies, find other survivors, and stay alive. See them in The Walking Dead (Video Game).