El Capitan Calzoncillos y la ridicula historia de los seres del inodoro morado : la octava novela epica / de Dav Pilkey ; [translated by Miguel Azaola].
Originally published: New York : Blue Sky Press, c2006.
Summary
George and Harold hypnotize their principal who, believing he is the superhero Captain Underpants, leads them to the lair of the nefarious Dr. Diaper. They must then defeat his evil robot henchmen.