best villian?

[UnknownH]

Ok then. Here.

http://wikimon.net/Chaosdramon
He has an X-antibody form too.

http://wikimon.net/Chaos_Lord
Chaos Lord is the first one. Afterwards, they appeared more frequently.

http://wikimon.net/Lucemon
Italian (Italiano) | Luce
n., Luce (「ルーチェ」 Rūche) means "light", and is a reference to "Lucifer" (Lat: "light-bringer"), a royal title that is commonly considered Satan's name before his rebellion.

And so, in a dual reference, his name means both Light, and a devil name.
This fits perfectly.