Roko-Loko's rival, Ratozinger, is directly inspired in Joseph Ratzinger, also known as Pope Benedict XVI. "Rato" in Portuguese stands for "Rat". Also, his castle, Vaticão, is a clear reference to Vatican ("cão" in Portuguese stands for "dog").
The title, translated to English from Portuguese, is Roko-Loko in the Castle of the Ratozinger.
"Roko-Loko no Castelo do Ratozinger" was released both in a (cheap CD) commercial version and a free downloadable version.