Debo Doronbosu (デーボ・ドロンボス Dēbo Doronbosu) is a thieving Debo Monster themed after both a raven and a bank vault, created to serve Sorrowful Knight Aigaron in order to deprive humans of their favorite things to make them sad. The Bick Bank in his chest can hold an infinite amount of things, and he has been given Aigaron's invincibility cloak, which allows the wearer to dodge incoming attacks, as long as the cloak covers the body and he can see the incoming attacks.