What is the name of the sea monster boy in Luca?

The sea monster boy in Luca is Luca.

Luca is Luca Paguro, a young sea monster who lives beneath the Italian Riviera. He can transform into human form when he is dry, allowing him to explore the surface world without immediately being recognized.

The 2021 Pixar film follows Luca’s summer in Portorosso, where he befriends Alberto Scorfano and Giulia Marcovaldo. Together, they enter the Portorosso Cup, a competition involving swimming, pasta eating, and bicycle racing. Luca’s curiosity about school and the wider world drives much of the story.

A common mix-up is choosing Alberto, who is also a sea monster boy and Luca’s closest friend. Giulia is human, while Ercole is the human bully who competes against them. Director Enrico Casarosa drew on his childhood in Genoa and used regional Italian sea-monster folklore as inspiration for the film’s creatures.