Luca is a mysterious boy who appears in the Inazuma Eleven series from the third season onward. He is closely associated with Hidetoshi Nakata, often seen accompanying him during his travels and during the Football Frontier International tournament. Luca has short blond hair and brown eyes, and typically wears a long blue jacket over a white hoodie with an orange shirt underneath. He is of Italian origin and is the son of Gianni, the former coach of the Italian national youth team Orpheus.

In terms of personality, Luca is initially dismissive of the Inazuma Japan team, expressing skepticism about their strength when he first watches their selection matches. However, as he spends more time with Hide and observes the team's progress, he becomes more supportive. He has a relaxed, food-loving nature and is often seen eating. His motivations are closely tied to his friendship with Hide, as he chooses to stay by his side and share in his experiences rather than pursuing personal goals on the pitch.

Luca’s role in the story is primarily that of a companion and observer. He does not play football himself; instead, he acts as a quiet presence alongside Hide, offering commentary and company. His key relationship is with Hide Nakata, whom he considers a good friend and with whom he travels. There is little development for Luca as a character, but his attitude toward the Japanese team shifts from indifference to a more invested interest as the series progresses. He does not possess any notable football abilities, as he is not a player, but his loyalty and steady support make him a memorable part of Hide’s journey.