Mangini is renowned for recording and editing a new roar track for Leo the Lion, the Metro-Goldwyn-Mayer (MGM) lion mascot (ironically, tiger sounds were used for the effect).[2]
In April 2017, Mangini partnered with Pro Sound Effects to release The Odyssey Collection, developed from his personal sound library built throughout his career with partner Richard L. Anderson.[3][4]
Mangini is of Italian descent.[5] He married actress Annette McCarthy in 1984 and they have two sons. They separated some time later.[6][7][8] He also has a son, Rio, from his marriage to Ann Whatu.