Because you like Danny Tanner in Full House
Although Jareth seems like he's just a harmless romantic, his powers make him a formidable foe. See them in Labyrinth.
It's hard to tell if Dean Winchester cares more about saving the world or his 1967 Chevy Impala. See them in Supernatural.
A benevolent madman with a blue box, The Doctor is traveling through time and space to heal the wounds of the universe. See them in Doctor Who.
With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.
Arguably the world's worst boss, Michael Scott is desperate for love, praise and a suggestion for an improv scene. See them in The Office.
Armin Arlert was wrong. This world hasn't become hell; it's been hell. He just couldn't see it before. See them in Attack on Titan.
Mikasa Ackerman is a near-perfect soldier who won't break her stone-faced expression whether she's killing foes or protecting loved ones. See them in Attack on Titan.
Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.
Howl puts the "tortured" in tortured artist. He just wants to be recognized for his work, but no one wants to trust a boy that sorta looks like a bird. See them in Howl's Moving Castle.
Cynicism is his armor and words are his weapons, but what Tyrion Lannister would really like is some nice wine. See them in Game of Thrones.
It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.
Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.