Yea, in "children", sounds like resampling a small piece of the vocal, pitching it up (I think I've read skrill uses Celemony for vocal pitching), maybe adding some time on the attack, fairly aggressive high-pass filtering, and some distortion/saturation to give it that buzzy sound. Another thing to experiment with might be jumping around in the original sample when you're re-sampling. You can do this in Ableton fairly easily (though the jumps end up random) with the max 4 live LFO device and assigning it to the sample's start position.
