Because you like D.J. Tanner in Full House

A fight every now and then makes Dante's life a little more interesting. See them in Devil May Cry.

Hotheaded and arrogant, Kaneda is nevertheless fiercely protective of the biker gang he leads. See them in Akira.

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!!.

Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.

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.

Sylar's victims are found all over the country, many with their brains removed. See them in Heroes.

Ellen Ripley defines the word "badass." When she's not leading her crew on an interstellar voyage, she's slaying terrifying creatures. See them in Alien.

Introspective Theodore Twombly would rather observe life than participate in it. See them in Her.

Clank is the quintessential rational, intelligent robot sidekick. See them in Ratchet & Clank.

Romantic, tortured, and at times cruel, Heathcliff is an intense man. See them in Wuthering Heights.

Ciel Phantomhive is a haughty teenage nobleman who doesn't suffer fools gladly. See them in Black Butler.