Behaving like a stereotypical delinquent, Mondo is foul-mouthed and can come off as a rude and an intimidating individual. He is very easy to provoke, and will not hesitate to resort to violence if he starts to lose his patience.Mondo states that he tends to be very nervous around girls that he likes, causing him to raise his voice and ultimately scare them away, something that has happened at least 10 times already. This potentially shows that Mondo is shy around new people and is unaware of how to relinquish his ruffian type personality while in calmer situations.