A naturally curious and talented engineer capable of repairing any damage to the Astra. Luca is an adopted child. His father Marco Esposito is a controversial senator.
Later it turns out that Luca is intersex, having a androgynous body with sexual characteristics of both sexes. Although he identifies himself as a boy, Luca notes that he doesn't really consider himself a man or a woman, and his identity can change.
