|Real name||Johnathan Carmine Giovanni Tattaglia|
|Also known as||Johnny, John, little bruh|
|Born||30th of August, 1984|
|Career, affiliations and family information|
|Occupation(s)||Tattaglia underboss, mobster|
|Notable family members and relationship(s) with them||Samuele Tattaglia (father), Rico Tattaglia (older brother), Bruno Tattaglia (older brother), Mary Tattaglia (mother), Tony Tattaglia (uncle), Rudolph Tattaglia (uncle)|
|Video Games, Movies and Cartoons information|
|Main appearance(s) (Video Games)||The Godfather Games|
|Voiced by (English)||Chris Robson|
- "Help! Help!"
- — Johnny callin' out police
Johnathan "Johnny" Tattaglia was the Underboss of the Tattaglia Family from late 2010s to 2011, in 2011 he was assassinated in Crazy Town by a rival mobsters after he was planning to wage war against the Corleone Family.
Johnny Tattaglia was born to Sammy Tattaglia in Sicily, Italy, in 1984. He became the family's young underboss in 2010, after the dead of his older brother Bruno Tattaglia. He led Tattaglias attack on the rival Corleone Family in The Five Families Mob War and his even older brother Rico became the head of the Tattaglia family after the death of Don Samuele Tattaglia, lawyer Freddie Nobile, and Capo Giovanni Armanno. He plotted for a war against the Corleones to retake their territory, as all of their factories had been taken over.
His undoing came in 2011 on Old Fulton Street. Corleone underboss Charlie Trapani shot his trusted cop on payroll Federico Barbieri and his associate Massimo Barco, then throw a glass bottle at Johnny's stomach, and beat him up with a bat, killing him. His body and thoes his cops were discovered in the back alley there, packed in dumpsters and sliced into pieces.