Evil/ Demon/ Ghost Voice Effect???

I was Wondering if There was a Nice Vst Plug in
That will turn voice into a evil demon type of voice.
FL Studio has a nice flanger that will make this effect really good when put into the preset of Vexed 5ths.
Now since i hardly use FL for my Recording needs,
i wanted something similar so i can use within Sonar.
any recommendations?

i know i can rewire,
but i don't think i can link just an effect from fl studio to sonar can i?
and i have tried it,not really what am looking for
am currently looking at KVR
thank for the response

+1 Drewfx1,

I did demon vocs using Melodyne explicitly ... but had to use a condensor mic and a decent pre.

For a deep male demon:
1) Go down 1 octave with pitch
2) Take the formant down another 2-5 semitones.

For a sadistic female demon:
1) Go up 1 or 2 octaves (again, if the mic/pre combo is poor there won't be enough color to work with)
2) Push the formant up another couple of semitones.

3) Or just play with the formant any ole way, in V-vocal or a pitch changer

... consider alternate fx's:

4) Ultra compress 40/1 ... with MU gain to clipping

5) Use the flanger fx in Sonar

etc. 

Time would fail me to guessing one might discover a nasty demon with lofi distortion, hamonizers, tape saturation, wawa fx, and/or NI guitar gear LE (which demonizes all my guitar tones ...)

Digital distortion is probably more demonic than tube/analogue.
 
Playing Stairway to Heaven backwards ... yields formidible minions as well.
Hopefully, MGH will chime and shed some light on the powers of darkness.

Clone Ensemble is relatively inexpensive and can do a good job at this (much better at strange voice effects than actually making a voice sound like a group of vox).

Thank you all for the responses.
DanBob i heard the voice that's exactly how mine sounded after messing with the V-Vocal in sonar,
Still haven't came across one just like it tho,
I will be trying Mlockett's and bapu's Recommendation
to see where it leads off

SSL actually have a free plugin made especially for this, I think it's still available so check out their site. While you're there don't forget to download their excellent emulation of their classic Listen Mic Compressor, it's free as well.

It depends on what kind of 'Demon' you want to sound like. If you want to sound like a low voiced demon then just pitch shift your way down and you'll sound like The Sisters of Mercy on anti-steroids. For that clean voiced demon it's also nice to add a high pitched harmony to make it sound more demon-like. I forgot what films had that kind of style of demon-voicing.

If you want the scary and evil (i can't really tell if this is the evil type you are saying), then take Mgh's advice. If you know how to do black/death vocals, record it then add pitch shfting, reverb and maybe distortion. Or try even mastering (perfecting, not the audio term ) your extreme vocals, just like what Mgh said. Like Chris Barnes, no effects and pure meat grinding vocals.

But if you're looking for the ghost type, then you might want to try some fancy reverbs or something. The ones that the earlier guys posted.

Well, goodluck!