"And he asked him - What is thy name? And he replied - MY NAME IS LEGION, FOR WE ARE MANY!" - Legion (using the biblical quote on which he is based to introduce himself)
The primary antagonist of the video game Shadow Man, (loosely based on the Marvel comic book of the same name) Legion is an immensely powerful evil force who rules in Deadside (the Underworld) and plans to invade the Land of the Livings. To that end, he recruited five serial-killers and turned them into powerful, undead half-demons able to travel between both sides of the Veil. Legion is based on the biblical demon of the same name and uses the famous quote "For we are many" as his and his servants' motto.