Dirty hands, curious eyes, an always-busy mind, and a kind heart are the essentials that define this gnome engineer. Despite being a creative genius and the inventor of many useful tools, Ruperto has trouble collecting his thoughts on a subject for a prolonged period so a great deal of his machines are just prototypes. While some are extraordinarily good at certain tasks and helped some heroes with huge deeds in the past, his inventions are usually one-of-a-type and the gnome can never set up a proper workshop to mass-produce those machines.