How does one make a voice sound "electrical"

Special Interest Groups Audio Processing
1

So a bunch of friend and I are making a game just for fun. We are looking for a way to make an electrical voice (you know, for an electrical character)
So is there anyway that this can be achieved?

2

Vocoding with square-wave (~100Hz) is electrical, but can still be understood …

IMO the (free) MdaTalkbox vocoder plugin is better that Audacity’s native vocoder.

3

A ring modulator effect can make a voice sound “electrical” or “robotic.”