Because you like Tara Maclay in Buffy the Vampire Slayer

Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.

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.

Thor is Asgardian nobility who is tickled by how us earthlings live. See them in Marvel Cinematic Universe.

Whether he's fighting or flirting, Jace Wayland is all swagger. See them in City of Bones.

Stoic, cynical, and independent, Homura Akemi is an alluring enigma. See them in Puella Magi Madoka Magica.

The brilliant and well-adjusted Ender Wiggin is being groomed for the next generation of military leaders to fight alien invaders. See them in Ender's Game.

Walter White's knowledge of chemistry allows him to cook astoundingly pure meth, leading to a rapid – albeit tumultuous – rise in the criminal drug world. See them in Breaking Bad.

Rayman is a fearless hero who flies into action with a propeller on his head and a smile on his face. See them in Rayman.

An undercover DEA agent, Max Payne is too focused on avenging the past to plan for the future. See them in Max Payne.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.

Aang is already a master airbender and once he learns to manipulate water, earth, and fire, he'll be truly unbeatable. See them in Avatar: The Last Airbender.