Voice Changer program help

I’m currently trying out voice filters and my goal is this.
The guy in the skull helmet.


and here at the beginning and again at 10:38 to the end


If anyone can help me out with this I’d be grateful and offer free services in star citizen where applicable.

You don’t actually need a voice-changer for that.

An empty can of green beans will do the same thing instantly.

Try it out! You may be pleasantly surprised.