Firo Prochainezo

Firo Prochainezo is a major character in the light novel and anime series Baccano!, as well as one of the main anti-heroes. While Firo is generally a nice guy around his friends, this hides a very violent and unstable side. As an adopted member of the Mafia family the Martillos, Firo has absolutely no problem with torturing anyone who bothers his family. Despite this, he does still have morals and cares a great deal for his friends, such as his childhood friend Claire Stanfield and eventual wife Ennis.

He is voiced by Hiroyuki Yoshino in the Japanese version of the anime and Todd Haberkorn in the English version, the latter of whom also voices Judar and Ayato Kirishima.