Being a menacing videogame villain takes more than just having a "Kill, Kill, Kill!" kind of attitude. Menace comes from the antagonist's presence. For me, how scary a bad guy is knowing that they're is more powerful than you, smarter than you, more violent, aggressive and sadistic. It's having a psychological or physical authority over the game's progression as either an obstacle or a barrier to the protagonist. It's about unsettling the player and keeping them on edge throughout the game. Matthew O'Mara of LevelFortyTwo.com provides a list of some of the most menacing video game characters.