Robbie Stienburg 307pages on this wiki Add New Page Edit History Talk0 Share Robbie is a minor character who only appeared in Captain Underpants and the Perilous Plot of Professor Poopypants. Retrieved from "http://captainunderpants.wikia.com/wiki/Robbie_Stienburg?oldid=4357" Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.