<Li> Professor Pippy Pee - Pee Poopypants (Later known as Tippy Tinkletrousers, then Prof. Pee - Pee Diarrheastien Poopypants Esq .)--A brilliant scientist who unfortunately comes from a foreign culture in which everyone has a silly name . In the film, he is voiced by Nick Kroll </Li> <Li> Robo - George and The Harold 2000--Two giant robots built by Wedgie Woman based on George and Harold . They were totally obedient to Wedgie Woman, each had a vast arsenal of powerful weapons and gadgets and were programmed to destroy Captain Underpants once they heard him say "Tra - la - laaa!" </Li> <Li> The Bionic Booger Boy (Melvin Sneedly)--A mix of Melvin Sneedly, boogers, and a super-powered robot . </Li> <Li> Carl, Trixie and Frankenbooger (The Three Robo - Boogers)--Boogers who all come from the Bionic Booger Boy . They all share a weakness to oranges, which Captain Underpants successfully used to destroy the rampaging trio of living mucus . Carl had the Bionic Booger Boy's legs, Trixie had the tentacles, and Frankenbooger had the arms . Whenever they eat, they become bigger and more evil . </Li>

When is the next captain underpants book coming out