Mondo is foul-mouthed and often comes off as rude and intimidating. He has a severe complex about being seen as weak, and does his best to not be seen as 'soft' by constantly repeating in his mind that he IS strong. He's very easy to provoke, and will not hesitate to resort to violence if he starts to lose his patience. He's very nervous around girls that he likes, often causing him to raise his voice and scare them away. He's a huge dog lover since he had one named Chuck during his childhood.