Easy-going and relaxed whenever the number "4" is not involved, Guido Mista is also a resolute gunslinger when in battle. Mista comes off as a laid-back teenager, being one of the least serious members of Team Bucciarati, although not as childish as Narancia. His backstory describes him as a carefree individual, whose goal was to enjoy simple, daily, and worldly pleasures such as food or pretty girls.During idle times, Mista can often be seen reading books or magazines.