Because you like Fredo Corleone in The Godfather

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

A jaded skeptic who only wants to get paid, Garrett becomes involved in bigger struggles that force him to be less self-serving. See them in Thief.

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).

Thanos is an intergalactic warlord, on the hunt for infinite power. See them in Marvel Cinematic Universe.

Maya Lambert is an obsessive intelligence officer with tunnel vision leading toward Osama bin Laden. See them in Zero Dark Thirty.

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.