According to Aaron Stack, the Broccoli Men are most likely grown on slabs of genetically modified kelp and run on a Beyond Corporation 'Fightpersona XP' operating system . the Beyond Corp Human Resources Department, an army of plant-human freaks in red three-piece suits and Dr Doom armor" 

There are a number of them, and I think they would all sound pretty much the same. 

There will be another Role for a one-off Broccoli man who doesn't speak in all caps and uses grammar. So if you could throw your voice at that as well it would e great.