If you mean fake profiles that look like real persons so that the public think they are real users of your site, then the answer is no.
Why? Populator for Jomsocial creates profiles that are fully functional and realistic as far as characteristics that matter to a developer are concerned (like the creation date). But, the avatars and cover images of those profiles aren't realistic. They are just a grey background with the name of the profile on top.
Populator for Jomsocial is intended for testing and showcasing when developing a site with Jomsocial or an extension for Jomsocial.