What Is A Symbolic Name For Evil?

Well this is pretty easy. The symbolic name for evil that everyone agrees with is "devil". You hear this in all those movies and plays, wherever comes an evil character, he's called as a devil, even naughty kids are referred to as "little devil".

If you want to actually write a character that is not the devil, perhaps a name linked to it, such as Lucifer, or a name that is like an icon of evil (e.g. Damon or Damian is similar to Demon, or Lucius, Lucas, Lefier are simlar to Lucifer), or mix up the letters for the devil to come up with something a bit more original (such as Levid). Or if the character is meant to be sinister, perhaps something like Professor Hades, or Mr. Helles (or something similar). It depends what you want the character to be like.