You can see PHD Flopper when you zoom down the starting elevator, but you cant seem to get it! For a clearer view of it check it out in theater. Its basically confirmed you cant get it because people got six perks via perk bottles, and when they get another bottle that should be PHD, nothing happens. And i am also pretty sure that there are people who got the achievement to get all perks and didn't even have Flopper.
R- Executive-R Ive got a curved sword. big. CURVED. SWORD.