An all-male counterpart to Madmoiselle Geraldine's Finishing School, Bunson and Lacroix's Boys' Polytechnique, sometimes called "Bunson's", is located in a town called Swiffle-on-Exe. They teach young men how to be evil geniuses, encouraging them to cause mayhem and build sinister gadgetry. Occasionally, both schools work together—Mademoiselle Geraldine's stops at Bunson's when repairs to the dirigibles are needed. The schools ally only so long as they can both benefit from it. After Monique de Pelouse bungles the retrieval of the prototype, relations between the two schools become slightly cooler. The school eventually wins the contract to produce the final version of this prototype, crystalline guidance valves, for the Picklemen.