Easy-going and relaxed whenever the number "4" is not involved, Guido Mista is also a resolute gunslinger when in battle. While Mista may act nonchalant, he is one of the most uncivil and violent members of the cast. He often commits violent acts without hesitation, having a history of getting into fights that he would sometimes lose, for the petty reason that someone had badmouthed his favorite movie star. Mista comes off as a laid-back teenager, being one of the least serious members.