Because you like Jean-Baptiste Emanuel Zorg in The Fifth Element

Surly and sarcastic, Manny travels alone and prefers it that way. See them in Ice Age.

Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.

Leatherface's moods change with his masks. See them in The Texas Chainsaw Massacre.

Playing his cards close to his vest, J. Daniel Atlas believes the closer you look, the less you see. See them in Now You See Me.

Handsome Jack is wearing a mask of his own face to hide his scarred real one. See them in Borderlands Series.

M. Bison is a diabolical megalomaniac hell-bent on dominating the world. See them in Street Fighter.

A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.

Despite the war-torn world around him, Mal Reynolds still holds onto the shred of hope that life can be more than just living another day. See them in Firefly.

Boomerang is equally skilled at tossing boomerangs and tossing back beers. See them in DC Extended Universe.

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.

Zeratul is cryptic, mystic, and not to be messed with. See them in StarCraft .

Both a noble district attorney and a psychopathic villain, Harvey Dent proves some men really can have it all. See them in DC Extended Universe.