tyler walker, the adr director of the english dub of the series, held auditions for six days, during which about 140 people came for the eighteen main roles. walker states that this is probably the longest casting process funimation has held. he comments that because there are a lot of characters and most of them are older men, a character type he does not work with often, choosing voice actors and familiarizing them with their characters was difficult. he asked many directors and actors for recommendations and mainly aimed to cast newcomers, as he felt "baccano!" provided him a chance to discover newer talent. walker wished to find actors who could provide the dialect and accents of the various time periods and locations, especially when casting for the characters with heavy european accents.