Evil is the lesser known cousin of Manpreet, son of Jesus, (not to be confused with the divine Jebus, who in the height of Elvis' rule of the Holy Roman Empire conspired with a committee of twelve to kill him.
Since evil spelled backwards is "live", all anyone has to do to be evil is to live a backwards life.
Playing itself centuries after its death, Evil was introduced by the line: "Don't touch that, it's concentrated evil!." After filming, Terry Gilliam and the cast continued producing evil both from concentrate and in a freshly squeezed farmers blend, for sale in juice boxes.