Jacob Tremblay as Luca Paguro (voice)

Jack Dylan Grazer as Alberto Scorfano (voice)

Emma Berman as Giulia Marcovaldo (voice)

Saverio Raimondo as Ercole Visconti (voice)

Maya Rudolph as Daniela Paguro (voice)

Marco Barricelli as Massimo Marcovaldo (voice)

Jim Gaffigan as Lorenzo Paguro (voice)

Peter Sohn as Ciccio (voice)

Lorenzo Crisci as Guido (voice)

Marina Massironi as Signora Marsigliese (voice)

Gino La Monica as Tomasso (Old Fisherman) (voice)

Sandy Martin as Grandma Paguro (voice)

Giacomo Gianniotti as Giacomo (Young Fisherman) (voice)

Elisa Gabrielli as Concetta Aragosta (voice)

Mimi Maynard as Pinuccia Aragosta (voice)

Sacha Baron Cohen as Uncle Ugo (voice)

Francesca Fanti as Maggiore (Cop) (voice)

Jonathan Nichols-Navarro as Priest (voice)

Enrico Casarosa as Card Player / Angry Fisherman (voice)

Jim Pirri as Mr. Branzino (voice)

Arturo Sorino as Additional Voices (voice)