I heard a man on the train yesterday who had a vibrating robot voice. He sounded like he was talking through a comb.
I imagine he can talk to mechanical things with that voice. I bet he has regular conversations with turntables and condom vending machines. I bet he avoids the mad rantings of televisions and that the horror stories of vacuum cleaners keep him awake at night.
I bet he impersonates computers and gives out fake lottery results over the phone. I bet he rings universities and pretends to be Hawking. I bet he preaches false physics.
A vibrating robot voice is a dark superpower indeed.