Behaving like a stereotypical delinquent, Mondo is foul-mouthed and can come off as a rude and intimidating individual. Mondo could become easily aggravated depending on what was said. He is very easy to provoke, and will not hesitate to resort to violence if he starts to lose his patience. Mondo has a severe complex about being seen as weak, which he represses by constantly repeating in his mind that he is strong. This complex stems from the fact that his gang members tended to look down.