i read here
https://aaronkumar.wordpress.com/cheats-...-tycoon-3/

the cheat MS. Parker lets you control a peep but when i typed it in on a peep no luck any clues?

Sorry but that sadly isn't a thing, the closest thing you can get is naming a peep Jonny Watts which gives you a first person view of a peep but you cannot control them.