|Behind the scenes|
|Portrayed by||Callum Grant (voice)|
- "Okay give it here... but this arrangement better be worth it."
- ―Billy Delveccio[src]
A member of Donnie Marinelli's regime, under soldato Rocky Della Barca, Billy Delveccio joined the liquor racket in the 1930s and was initially ecstatic about joining the business. A few months later, Delveccio was sent to work in the backroom of Arezzo Seafood and, due to the disorder in the Tattaglia family's ranks, became slowly forgotten.
During the 1940s, Delveccio practically wanted to give away his link in the Tattaglia liquor chain, and he was pleased to be bought out by Aldo Trapani in 1945, and the special attention the Corleone family paid him left Delveccio more inclined to work hard.