Brio is a shy and meek man, which serves as a contrast to Doctor Cortex's megalomania. He has never had people respect him or take him seriously, resulting in a low self-esteem. It is this weakness that originally caused him to join Doctor Cortex in his plot for world domination. However, it is also this weakness that allowed Cortex take the full credit for an invention that Brio was more responsible for attaining any sort of effectiveness, resulting in the development of intense inner-contempt and jealousy of Cortex on Brio's behalf. As a way of making up for his mistake of allowing Cortex to take credit for his inventions in the past, Brio has developed a notable level of self delusion, as he cites himself as being the actual inventor of the Evolvo-Ray (even though he only perfected it). This worsens even further where he constantly, almost impulsively reminds anyone in his presence of his inventions, even crediting himself with several other things that he couldn't possibly have created, like recycling, slinkies as well as claiming to have written a bible.