Usually to get voices similar to that ill use auto tune or v-vocal and do a similar to t-pain effect and basically max out the tracking and retune. Then apply a stereo imager to help spread it and play around with reverb to kinda help smooth it. Also could add a demonic style sound with the default cakewalk Pitch shifter that you should have. Combine the low and hi pitched to make it slightly demonic then in combination with v-vocal( which i believes comes defualt in x1? i could be wrong) or auto-tune will give it a robotic sound.
A much simpler way would be to use a vocoder and ur midi controller.
I wouldn't doubt it if another experienced user comes along soon with a better or simpler method. These forums have very helpful individuals.