Thanks for adding links to examples of the mentioned tunes
The first one may have been done by some text to speech tool with some autotuning to get the voice to sound in the same tone all the way.
FL studio has one build in and it is the only one I know.
The second one is a normal vocal with a distorted version of the same vocal running along.
__ Check my soundcloud (exclusive tracks on there)
Nice, haven't used on since my FL days (built in one) which was yeeears ago, if I remember correctly didn't it sound similar to the one Brockie and Ed Solo used to use? (Echo Box, System Check)