Technically speaking, every Ghost-type that learns Curse is a Voodoo Pokemon. And it truly doesn't make sense to have a "Voodoo Doll Pokemon" who can't use "Curse" for its Voodoo technique.Okay, my final vote is for DougJustDoug. Every pokemon is based off something you can recognize, and while Voodoom is obvious, Kukem's is called the Dark Loris Pokemon (I think its pretty obvious that its based off of a Ninja and that its concept preevo is based off of some quadrupedal nocturnal animal with black spots around its eyes), and I fail to see the resemblance. I also think Volt Absorb/Lightningrod is exectued better in Voodoom.
Also, we don't have a pure voodo pokemon yet, though Banette is similar.
But, if we consider CAP11 to be a ninja:
Nicada: the Trainee Pokemon
Ninjask: the Ninja Pokemon
Different body style, same inner concept. So I don't think that "Banette is too similar" is a good reason not to vote for DougJustDoug. Just some thoughts, both concepts have their own pros and cons, but most have been stated already.
Loris refers to its pre-evolution concept which is based off of a Loris.